Page 1 SERIAL NUMBERS and UP This material is proprietary to Komatsu America Corp. and is not to be reproduced, used, or disclosed except in accordance with written authorization from Komatsu America Corp. It is our policy to improve our products whenever it is possible and practical to do so. We reserve the right to make changes or add improvements at any time without incurring any obligation to install such changes on products sold previously.
Page 3 Komatsu warrants to the ultimate purchaser and each subsequent purchaser that the engine is designed, built and equipped so as to conform, at the time of sale by Komatsu, with all U.S. Federal emission regulations applicable at the time of manufacture and that it is free from defects in workmanship or material which would cause it not to meet these regulations within five years or 3,000 hours of operation, whichever occurs first, as measured from the date of delivery of the engine to the ultimate purchaser.
Page 5 If the Extranet Literature Ordering System is not available at the distributor location, then the following Requisition for Technical Service Publications and Service Forms can be used. Form KDC91E is shown on the reverse side of this page. Komatsu America Corp. reserves the right to add a surcharge to all fax orders.
Page 6 REQUISITION FOR TECHNICAL SERVICE PUBLICATIONS AND SERVICE FORMS COMPLETE FORM DataKom Publications and Training Division AND RETURN TO 440 North Fairway Drive Vernon Hills, IL 60061-8112 U.S.A. Attn: Service Publications Fax No. (847) 970-4186 Tel No. (847) 970-5887 COMPANY NAME PURCHASE ORDER NO.
Page 7 0INTRODUCTION WA320PT-5L...
Page 8: Introduction
Continuing improvements in the design of this machine can lead to changes, which may not be reflected in this manual. Consult your local KOMATSU distributor or for the latest available information on your machine or for questions regarding information in this manual.
Page 9 INTRODUCTION ❉ Storage location for Operation and Maintenance Manual is in the pocket (1) at rear of operators seat back rest. WA320PT-5L...
Page 10: Safety Information
Safety precautions are described in SAFETY section (1-1) KOMATSU cannot predict every circumstance that might involve a potential hazard in operation and maintenance. Therefore the safety message in this manual and on the machine may not include all possible safety precautions. If any procedures or actions not specifically recommended or allowed in this manual are used, you must be sure that you and others can do such procedures and actions safely and without damaging the machine or causing injury.
Page 11: Approved And Non-Approved Uses
APPROVED AND NON-APPROVED USES The Komatsu WHEEL LOADER described in this manual has been designed and constructed to be used mainly for the following functions, any non-approved used may void the warranty, damage the machine or possibly injure the operator.
Page 12: Product Identification
INTRODUCTION PRODUCT IDENTIFICATION The serial numbers and model numbers on the components are the only numbers that your dealer will need when requiring assistance or ordering replacement parts. It is a good idea to record this information in this manual on page 0-7 (Serial Number And Dealer Information).
Page 13: Engine Serial Number And Emission Label
INTRODUCTION ENGINE SERIAL NUMBER AND EMISSION LABEL The engine serial number is on a plate located on the right side of the machine. SERVICE METER LOCATION The service meter is located in the center bottom of the machines monitor bezel. WA320PT-5L...
Page 14: Serial Numbers And Dealer Information
INTRODUCTION SERIAL NUMBERS AND DEALER INFORMATION Model: WA320PT-5L Machine # Engine # Dealer: Address: Phone # Contacts: NOTES: WA320PT-5L...
Page 15: Table Of Contents
INTRODUCTION CONTENTS INTRODUCTION FOREWORD ..............0-2 SAFETY INFORMATION .
Page 16 INTRODUCTION COOLING SYSTEM PRECAUTIONS ..........1-17 BATTERY PRECAUTIONS .
Page 17 INTRODUCTION ENGINE COOLANT TEMPERATURE GAUGE ....... . . 2-15 FUEL LEVEL GAUGE ............2-15 SPEEDOMETER .
Page 18 INTRODUCTION SECURITY, LOCKS AND SAFETY FEATURES ........2-33 IGNITION KEY LOCKED AREAS .
Page 19 INTRODUCTION LISTENING TO RADIO ........... . . 2-49 LISTENING TO CASSETTE TAPE .
Page 20 GUIDE TO MAINTENANCE ............3-5 CARRYING OUT KOWA (KOMATSU OIL WEAR ANALYSIS) ..... . . 3-6 KOWA ANALYSIS ITEMS .
Page 21 INTRODUCTION REPLACING BOLT ON CUTTING EDGE ......... 3-24 REPLACING BUCKET TEETH .
Page 22 INTRODUCTION CHECKING FUNCTION OF ACCUMULATOR ........3-47 PPC ACCUMULATOR .
Page 23 INTRODUCTION GRADING OR LEVELING A SURFACE ......... . . 5-7 USING MULTI-FUNCTION LEVER .
Page 24 INTRODUCTION 0-18 WA320PT-5L...
Page 25 1SAFETY WARNING! Read and follow all safety precautions. Failure to do so may result in serious injury or death. This safety section also contains precautions for optional equipment and attachments. WA320PT-5L...
Page 26: Safety
SAFETY GENERAL SAFETY RULES AND PRECAUTIONS GENERAL SAFETY RULES Only trained and authorized personnel shall be allowed to operate and service this machine. Before operating this machine it is important to study the operator’s manual thoroughly and become familiar with all controls and safety decals.
Page 27: Safety Features
SAFETY SAFETY FEATURES Be sure all guards and covers are in place especially after servicing the machine. Have guards or covers repaired immediately if they are damaged. See “START-UP PRECAUTIONS AND CHECKS” on page (2-54) Use safety equipment such as safety locks and seat belt properly. Never remove any safety features.
Page 28: Unauthorized Modifications
UNAUTHORIZED MODIFICATIONS Any modification made without authorization from Komatsu can create a hazards. Before making any modifications, consult your local distributor. Komatsu will not be responsible for any injury or damage caused by any unauthorized modifications. LEAVING OPERATOR’S COMPARTMENT Below are listed procedures that must be followed when exiting the operator’s cab.
Page 29: Mounting And Dismounting
SAFETY MOUNTING AND DISMOUNTING When mounting or dismounting this machine, always be sure the work equipment is fully lowered to the ground and the engine is OFF. Use all hand holds and step plates on your machine. Never jump off or on to the machine. Before getting on the machine, if there is any oil, grease, or mud on your shoes, rails, steps or platforms, wipe it off immediately, always keep these areas clean, and in good condition.
Page 30: Fire Prevention For Fuel And Oil
Clean up any fluid spills. DUST HAZARD PRECAUTIONS Dust can be hazardous to your health if it is inhaled. Komatsu does not use asbestos in its products, but if you handle materials containing asbestos fibers or other dust materials during demolition operations, always do as follows.
Page 31: Fire Extinguisher And First Aid Kit
When installing and using an optional attachment, read the instruction manual for the attachment and information related to the attachments. Do not use attachments that are not authorized by your Komatsu Distributor. Use of unauthorized attachments could create a safety problem and adversely affect proper operation and useful life of the machine. Any injuries, accidents, product failures resulting from use of unauthorized attachments will not be the responsibility of Komatsu.
Page 32: Starting Your Work Operations
SAFETY STARTING YOUR WORK OPERATIONS Using the work equipment may pose some hazards that may damage the machine or injure the operator. It is important to be aware of some of these hazards to avoid becoming involved in them. A safety conscious operator is the most important insurance when on a job site.
Page 33 SAFETY When the bucket is raised and loaded, never make sharp turns or stop the machine suddenly, this may cause the machine to tip forward. Always handle unstable loads carefully, avoid tipping the bucket back or raising the load too high. Be sure to operate the work equipment carefully and keep the load as close to the ground as possible.
Page 34: Working Clearances
SAFETY WORKING CLEARANCES It is always a good idea to be aware of your clearances around, in front, behind and especially above your work area or travel rout. .Some basic safety precautions to prevent risk are: • When working or traveling in an area where clearances are a problem, travel at a slow cautious speed.
Page 35: Rules For Road Travel
SAFETY RULES FOR ROAD TRAVEL Traveling with your machine may pose some hazards. When traveling, always travel in a safe manor and remain alert at all times A safety conscious operator is the most important insurance when traveling with the machine. Below are several situations and information the operator should be aware of: Raise the loader bucket to a safe travel height of 40-50 cm (16-20 in) from the ground, lock the loader control levers using...
Page 36: Travel On Slopes
SAFETY TRAVEL ON SLOPES Traveling on slopes may pose a hazard. In order to prevent tipping the machine or losing control it is important to follow some basic simple rules: Never turn the ignition key off when traveling up or down a slope. If the engine should stop, apply the brakes and stop the machine immediately.
Page 37: Parking The Machine
SAFETY Always travel straight up or straight down a slope, traveling at an angle on a slope may cause the machine to tip or possibly rollover. PARKING THE MACHINE When parking the machine it is important to follow several basic safety rules.
Page 38: Precautions During Maintemance Operations
SAFETY PRECAUTIONS DURING MAINTEMANCE OPERATIONS All maintenance performed on this machine must only be performed by trained and authorized personnel. When performing maintenance it is important to follow the outlined maintenance procedures and safety information outlined in this manual and in the Shop Manual for this machine. WARNING TAGS For machines equipped with the Electronically Controlled Suspension System (ECSS) be sure the system is off before...
Page 39: Working Under The Machine
SAFETY Store equipment in such a way that it cannot fall or cause injury to others. WORKING UNDER THE MACHINE Always use approved jack stands to support the machine when performing maintenance under the chassis. Never rely on hydraulic jacks or the machines work equipment to support the machine when working under or on the machine.
Page 40: Keeping The Machine Clean
SAFETY KEEPING THE MACHINE CLEAN Never use flammable liquids to clean your machine. Use only approved non-flammable cleaning solvents to clean parts or the machine itself. Avoid using high pressure steam cleaners or caustic soaps to wash the machine if possible. Steam cleaning or using caustic soaps may damage paint, wiring or sensitive electrical components.
Page 41: Rules For Refueling The Machine
SAFETY Always lock the front and rear frames with the safety bar (4). Be aware of rotating parts while the engine is running. RULES FOR REFUELING THE MACHINE Always clean up any spills. Grease, fuel, oil or coolant spills can pose a trip hazard if not mopped up immediately.
Page 42: Battery Precautions
SAFETY BATTERY PRECAUTIONS When working on the electrical system, disconnect the negative (-) battery cable first then the positive (+) battery cable last. On completion of work, reconnect the positive (+) cable first then the negative (-) cable last. When using jumper cables to start the machine as shown below, hook the positive (+) jumper up first, then the negative (-) jumper last to a remote location on the chassis.
Page 43: High Pressure Hoses
SAFETY HIGH PRESSURE HOSES Do not use bent, cut or cracked tubing or hoses which have been previously rejected because of leaks or other defects. Faulty hoses can burst during operation causing injury or fire. Repair or replace any loose or faulty fuel or hydraulic lines immediately.
Page 44: Inflating Tires
SAFETY INFLATING TIRES Always bear in mind that tires can burst while being inflated, causing serious accidents. Before servicing the tires, observe the following precautions: • Before inflating tires, always check the wheel rims, tire walls and tread for cuts, broken cords, or other damage. •...
Page 45: Safety And Warning Decals
LOCATION OF THE SAFETY DECALS • Your Komatsu Dealer can supply you with new replacement decals if the ones on the machine are damaged or missing. • When replacing damaged or missing decals, be sure they are placed in the proper location.
Page 46 SAFETY Warning decal before start-up: • Improper operation can be hazardous. • Read the operators manual before operating. • Keep the operators manual with the machine. Safety lock lever decal: • Avoid hitting the unlock lever. 1-22 WA320PT-5L...
Page 47 SAFETY Reverse travel decal: • Honk horn to alert people you are traveling in reverse. • Be sure no one is near your machine. • Use a spotter if your visibility is restricted. Voltage clearance warning decal:. • Be aware of your clearances when working around high voltage.
Page 48 SAFETY Pinch point danger decal: • Stay clear of machine when in operation. Safety bar warning decal: • Always lock the safety bar when machine is being trans- ported. • If necessary lock the safety bar when servicing machine. Hot coolant warning decal: •...
Page 49 SAFETY High temperature oil warning decal: • Turn engine off. • Allow oil to cool down. • Slowly loosen oil fill cap. Booster cable warning decal: • Follow instructions in the manual when using booster cables. 10. Accumulator warning decal: •...
Page 50 SAFETY 13. Ether use warning decal: • Do not use ether to start the engine. 14. Maintain safe distance warning decal: • Always keep a safe distance from the machine when in operation. 15. Work equipment warning: • Stay clear of work equipment. 16.
Page 51 SAFETY 18. Attachment latch warning. • Be sure the attachment is fully locked in place. • (In Cab) 19. Lock pin extension. • Be sure the lock pin extension is properly locked into the attachment. • (In Cab) 20. Coupler switch. •...
Page 52 SAFETY 1-28 WA320PT-5L...
Page 53 2OPERATION WA320PT-5L...
Page 54: General View Of Machine
OPERATION GENERAL VIEW OF MACHINE OUTSIDE VIEW OF THE MACHINE 1. Tool Carrier Unit 8. Turn Signal Lamps 2. Tilt Lever 9. Head Lamps 3. Front Wheels 10. Lift Cylinder 4. Bucket Cylinder 11. Lift Arm 5. Front Work Lamps 12.
Page 55: Inside View Of The Cab
OPERATION INSIDE VIEW OF THE CAB 1. Parking Brake Lever 12. Monitor Mode Select Switch 2 23. Dump Speed Switch 2. Rear Wiper Switch 13. Cigarette Lighter 24. Quick Coupler Switch 3. Front Wiper Switch 14. Auxiliary Control Lever 25. Work Equipment Lock Lever 4.
Page 56: Description Of Alerts, Gauges And Monitor System
OPERATION DESCRIPTION OF ALERTS, GAUGES AND MONITOR SYSTEM Before operating the machine it is important to understand all the functions equipped with your machines monitor. Operating the machine without knowledge of all the alert systems may damage the machine, property or possibly cause injury to the operator.
Page 57: Central Warning Lamp
“OFF”. Contact your local Komatsu Dealer for repairs.Do not operate the machine until repairs have been made This display (1) lights up if any emergency stop item, caution item, or incorrect operation of any switch or control occurs.
Page 58: Emergency Stop Warning System
“OFF”. Contact your local Komatsu Dealer for repairs.Do not operate the machine until repairs have been made. 1. Brake Pressure Warning Lamp 2.
Page 59: Battery Charge Warning Lamp
OPERATION BATTERY CHARGE WARNING LAMP Lamp (3) warns the operator that the charging system has dropped below the specified set value. During operation (engine running) if the charging system should fail, the battery charge warning lamp as well as the central warning lamp should light up and the alarm buzzer will sound intermittently.
Page 60: Caution Lamps
Contact your Komatsu Dealer.
Page 61: Parking Brake Reminder Lamp
OPERATION PARKING BRAKE REMINDER LAMP Lamp (2) alerts the operator if the parking brake is not set and the engine is off. During operation if the if the engine is shut down and the parking brake is not set the parking brake reminder lamp, as well as the central warning lamp should light up along with the alarm buzzer.
Page 62: Inspection And Maintenance Allerts
These items must be attended to immediately. Failure to do so may result in a system break down. Contact your local Komatsu Dealer for service on these items. Do not continue machine operations.
Page 63: Engine Oil Level Alert Lamp
OPERATION ENGINE OIL LEVEL ALERT LAMP Lamp (2) alerts the operator that the engine oil level is low and needs immediate attention. During operation if the engine oil level lamp should come on shut the machine down immediately and have it serviced.
Page 64: Mode Alert Lamps
OPERATION MODE ALERT LAMPS These indicators alert the operator that the machine is in a certain operating mode or a function is operating. It is important for the operator of this machine to pay close attention to these indications especially when the machines engine is running or the machine is mobile, failure to do so may shorten the life of a component or inadvertently cause an accident.
Page 65: Steering Oil Pressure Lamp (Green)
OPERATION STEERING OIL PRESSURE LAMP (GREEN) Emergency steering device (if equipped) If this lamp (3) lights up when the engine is running or when the machine is operating, it indicates that the condition is normal. If it does not light up when the machine is started, a problem in the emergency steering circuit has occurred.
Page 66: Gauge Display
OPERATION GAUGE DISPLAY These gauges allow the operator of the machine the ability to monitor the operating systems on the machine. It is important for the operator to pay close attention to these gauges especially when the machines engine is running, mobile or the working.
Page 67: Engine Coolant Temperature Gauge
OPERATION ENGINE COOLANT TEMPERATURE GAUGE This meter (2) indicates the engine coolant temperature. During normal operations, the indicator should be in the white range (A). If the indicator enters red range (B) during operations, caution lamp (C) on the engine coolant temperature gauge lights up. At the same time, the central warning lamp lights up and the alarm buzzer sounds.
Page 68: Machine Electronic Monitoring Display
OPERATION MACHINE ELECTRONIC MONITORING DISPLAY This display system electronically monitors several major functions, these functions include the amount of operating hours on the machine, all operating alert and failure information and service intervals. These functions can be accessed by using the mode selector switches (1) and (2).
Page 69: Mode Selector Switch 2
OPERATION MODE SELECTOR SWITCH 2 Mode selector switch (2) is used to navigate within the chosen display on the monitor screen. The basic operation is as follows. Position: To go on to the next screen or function, move the cursor forward, or to increase the number when entering numerals Position: To go back to the previous screen or function, or to move the cursor...
Page 70: Action Code Display
If this code should appear on the monitor, stop and shut the machine down immediately. Contact your Komatsu Dealer and do not operate the machine until the problem is repaired.
Page 71: Failure Code Display
FAILURE CODE DISPLAY If an action code is displayed, check the failure code using the failure code display method given below.When contacting your Komatsu distributor to request repairs, please inform your distributor of the failure code. Method Of Displaying Failure Code...
Page 72 OPERATION Service Alert Display The ID number and item name needing service are displayed on the monitor display, the remaining time to service the item and the number of times a service has been performed are displayed in 3 second intervals. If the service time has already passed, a minus (-) sign appears before the time display.
Page 73: Selecting Language
OPERATION SELECTING LANGUAGE To switch the language on the mode display. The following explanation outlines the procedure for changing the language to either English, Japanese, German, French, Italian, Spanish or Swedish. To Select A Language To enter reset language mode the ignition key must be in the ON position.
Page 74: Machine Switches And Controls
OPERATION MACHINE SWITCHES AND CONTROLS Before operating the machine it is also important to understand all the functions of your machines controls and switches. Operating the machine without full knowledge of all control systems may damage the machine, property or possibly cause injury to the operator.
Page 75: Switches
OPERATION SWITCHES Manual switch controlled systems are used to operate electrically operated features. Most of these features are not part of the controls in the main operating system. However, it is important that the operator know where they are located and how they operate.
Page 76: Traction Control Switch
OPERATION TRACTION CONTROL SWITCH Switch (4) can be used to actuate the traction control and reduce the maximum rim pull. Position (a): ON Traction control is activated Position (b): OFF Traction control is deactivated Remark Traction control is effective in preventing the tires from slipping during light-duty operations.
Page 77: Head Lamps-Turn Signals-Dimmer Switch
OPERATION HEAD LAMPS-TURN SIGNALS-DIMMER SWITCH Head Lamps Switch Switch (6) is used to light up the front head lamps, side clearance lamps, tail lamps, and instrument panel. Position (a): OFF (Lamps go out) Position (b): Side clearance lamps, tail lamps, and instrument panel light up Position (c): Head lamps light up in addition to lamps at (position Turn Signals Switch...
Page 78: Hazard Lamp Switch
OPERATION HAZARD LAMP SWITCH Switch (8) is used in emergencies, when the machine breaks down or has to be parked on the road. Position (a): Direction indicator lamp and directional indicator pilot lamp flash, and pilot lamp (A) lights up at the same time. Position (b): Lamps go out Remark Use the hazard lamp only in emergencies.
Page 79: Mode Selector Switch 2
OPERATION MODE SELECTOR SWITCH 2 Switch (12) is used to switch the function of the character display. See page 2-22 for details on this switch. ATTACHMENT SELECT SWITCH This switch (18) switches the bucket positioner and fork positioner. Position (a): When using the bucket, set to this position. Position (b): When using the fork, set to this position.
Page 80: Rear Wiper Switch
OPERATION REAR WIPER SWITCH When lever (C) of this switch (14) is turned, the rear wiper will operate. Position (a): Washer fluid is sprayed Position (b): OFF Position (c): Wiper is operated Position (d): Washer fluid is sprayed, wiper is operating CIGARETTE LIGHTER This is used to light cigarettes.
Page 81: Controls
OPERATION CONTROLS The control levers are used to control the direction and speed of the machine, stop the machine, operate the work equipment and park the machine. A good thorough understanding of these controls will help the operator in using the machine efficiently and safely.
Page 82: Bucket Control Lever
OPERATION Position (c): LOWER When the lift arm control lever is pushed forward the arm is lowered. Be careful not to lower the lift arm too fast, damage to the machine may result. Position (d): FLOAT Once the lift arm is fully lowered, by moving the control lever further forward the hydraulic system for the lift arm will be locked in a float position.
Page 83: Brake Pedals
OPERATION BRAKE PEDALS Pedals (22) operate the brakes. Use the brake pedal for normal braking operations. The left and right pedals are interconnected and work together. Brake Pedal (right) This pedal is used for normal braking operations including traveling with the machine or slowing the machine down. Depress the pedal to slow or stop the machine.
Page 84: Steering Tilt Lock Lever
OPERATION STEERING TILT LOCK LEVER Lever (25) allows the steering column to be tilted forward or backward. Set the lever (1) to FREE position (a). Set the steering wheel (2) to the desired position, then set lever (1) to LOCK position (b). Remark Always stop the machine before adjusting the steering wheel tilt position.
Page 85: Security, Locks And Safety Features
OPERATION SECURITY, LOCKS AND SAFETY FEATURES This machine is equipped with several security, locks and safety features designed to protect the operator, persons performing service, repair or inspections on the machine as well as the general public when the machine is not in use and unattended.
Page 86: Rear Gril And Fuel Cap
OPERATION REAR GRIL AND FUEL CAP Rear Grill To access the fuel tank fill cap, both the rear grill and fuel cap are locked. The lock for the rear grill is located on the lower portion of the grill. Fuel Cap After refueling the machine lock the fuel tank cap as well as the grill.
Page 87: Padlocked Areas
OPERATION PADLOCKED AREAS Several areas are secured with a latching device and a padlock. These areas must be locked at all times to avoid unnecessary tampering. BATTERY AND TOOL BOX Both battery and tool boxes are locked and should only be accessed by maintenance personnel.
Page 88: Cab Doors And Windows
OPERATION CAB DOORS AND WINDOWS CAB DOOR LOCK BUTTON The cab door lock button is used to lock the cab doors from the inside. (Right or left door) Press cab door lock button to lock the door. Position (a): Lock Position (b): Release CAB DOOR OPEN LOCK When getting in or out of the operator's compartment, or when...
Page 89: Safety Lock Bar
OPERATION SAFETY LOCK BAR Since this machine is designed to operate on an articulating steering set up it is important to know where the articulating safety lock bar is located, how to use this safety lock bar and when to use the lock. Key Points To Remember Regarding Safety Lock Bar When performing a preoperational inspection be sure the safety lock bar is in the FREE position and properly secured in place for normal...
Page 90: Fuses And Electrical Outlets
OPERATION FUSES AND ELECTRICAL OUTLETS Before replacing a fuse, be sure to turn off the ignition switch. The fuses protect the electrical equipment and wiring from damage or the possibility of fire. If the fuse becomes corroded, or white powder can be seen, or the fuse is loose in the fuse holder, replace the fuse.
Page 91: Fuse Box (B)
OPERATION FUSE BOX (B) Fuse capacity Name of circuit Air conditioner A Air conditioner B Beacon lamp (if equipped) KOMTRAX Not used Auxiliary power (key on 24V) D/C converter (if equipped) Parking brake B Horn Side marker lamp (left) Side marker lamp (right) Front work lamps Rear work lamps Auxiliary...
Page 92: Additional Features
OPERATION ADDITIONAL FEATURES POWER OUTLET Removing the cigarette lighter (1) allows use of its power. The maximum electric current is 7 A (168 W). COOL BOX When using the cooling box to keeping drinks and other things cool or when the heating mode is being used, to keep things warm. When using the box, open the vent grill (1).
Page 93: Air Conditioning System
OPERATION AIR CONDITIONING SYSTEM By taking fresh air into the cab through a filter, it is possible to control the atmosphere inside the cab. This makes it possible to provide a pleasant working environment even on dusty job sites for the operator. 1.Blower Motor Switch 2.Air Conditioner Switch 3.Mode Selector Switch...
Page 94: Mode Selector Switch
OPERATION MODE SELECTOR SWITCH Switch (3) is used to select the vents. The following five vent modes are available: FACE, FACE/ FOOT, FOOT, FOOT/DEF, DEF. When the switch is pressed, the indicator lamp above the switch lights up to display the vent mode. (FRESH/RECIRC) SELECTOR SWITCH Switch (4) is used to select between recirculation of the air inside the cab or intake of fresh air from the outside.
Page 95: Climate Control Operation
OPERATION CLIMATE CONTROL OPERATION Condition of use Air Select Mode Select Fan Switch A/C Switch Temp. Control Switch Switch Rapid Blue RECIRC FACE Cooling Normal HI - LO Half blue FRESH FACE Dehumidifying, HI - LO Blue/red FRESH FOOT heating Rapid RECIRC FOOT...
Page 96: Am/Fm Radio-Cassette Stereo
OPERATION AM/FM RADIO-CASSETTE STEREO The AM/FM radio offers the addition of music and pleasant sounds for the operator to enjoy while operating the machine for long periods of time. However, using the radio during machine operations may lead to distractions. When using the radio always be aware of what you are doing and your operating environment.
Page 97: Radio Operation
OPERATION RADIO OPERATION POWER SWITCH/VOLUME Turn this knob (1) to the right until it clicks to turn the power on. Turn it further to increase the volume. AUTO-STORE/PRESET SCAN BUTTON Use this button (2) to actuate the preset scan and auto-store functions. Auto-store: Each time this button is pressed for more than 2 seconds while in radio reception range, the auto-store function automatically starts to...
Page 98: Loudness Button
OPERATION LOUDNESS BUTTON This button (5) is used when playing at low volume. It makes it possible to hear more easily by emphasizing the low tone when the low tones are weak. Push button: Actuated (ON) Push button again: Canceled (OFF) TIME/RADIO DISPLAY SELECTOR BUTTON This button (6) is used to switch between the Radio/tape display and the Time display.
Page 99: Fast Forward, Rewind Buttons
OPERATION FAST FORWARD, REWIND BUTTONS These buttons (9) are used to fast forward or rewind the tape. Fast forward/rewind: If you press the button pointing in the same direction as the lighted arrow indicating the direction of play, the tape will be fast forwarded; if you press the button pointing in the opposite direction, the tape will rewind.
Page 100: Band Selector Button
OPERATION BAND SELECTOR BUTTON When this button (14) is pressed, the band is switched between FM1, FM2, and MW (AM). The band is shown on the display. USING RADIO FEATURE It is possible to preset 6 MW (AM) stations and 12 FM stations (FM1: 6 stations, FM2: 6 stations). USING AUTO PRESET •...
Page 101: Listening To Radio
OPERATION LISTENING TO RADIO • Turn the ignition switch ON, then turn power switch (1) ON. • Use band selector button (2) to select MW (AM), FM1 or FM2. • Select the station with the preset buttons (3). Remark In case you do not remember the number assigned to a certain preset station, press auto-store/preset scan button (4) for less than 0.5 second.
Page 102: Start-Up Preperations And Checks
OPERATION START-UP PREPERATIONS AND CHECKS Before starting your work operations it is important to perform several procedures to be sure your equipment is in a safe operating condition. It is also important to be aware of the hazards involved when operating your machine. PRE-OPERATIONAL CHECKS Before starting your machine and preceding with any work operations it is important to be sure your machine is safe to operate.
Page 103: Tire Pressures And Checks
OPERATION TIRE PRESSURES AND CHECKS If the tires show excessive ware, damage or look unusual contact your Komatsu dealer immediately. Do not operate the machine with under inflated, worn or damaged tires. Measure the tire pressure before starting operations and when the tires are cool.
Page 104: Checks Under The Hood
OPERATION CHECKS UNDER THE HOOD Oil Level A. Be sure the machine is siting on a level surface before checking any fluid levels. B. Open the hood side panels and check oil level. Remove dipstick (G) be sure oil level is within the specified range. C.
Page 105 OPERATION Engine Coolant Level E. Open top cover (1) at the front of the engine hood and check the coolant level in the recovery tank (2), coolant level should be between the FULL and LOW marks. Add coolant if necessary. Check the engine and radiator area for any build up of trash, wood chips, rubbish, leaves or other flammable materials.
Page 106: In The Operator's Cab
1 sec. If the lamps do not light up, there is probably a failure in the system contact your Komatsu distributor for inspection. L. Check the fuel tank gauge (G) to be sure the fuel level is not low, if necessary have the machine refueled before operating.
Page 107 OPERATION Adjusting The Seat When adjusting the seat be sure the safety lock for the controls are set in the locked position to avoid accidental actuation of the controls. ★ Standard Seat • Fore-and-aft adjustment Pull lever (1) up, set the seat to the desired position, then release the lever.
Page 108 OPERATION ★ Air Suspension Seat • Fore-and-aft adjustment Pull lever (1) up, set the seat to the desired position, then release the lever. Fore-and-aft adjustment: 120 mm (4.7 in) • Adjusting seat angle Move lever (2) up and push down on the rear of the seat to tilt it backward.
Page 109: Start-Up And Checks
OPERATION START-UP AND CHECKS A. Be sure the parking brake (1) is in the locked position and the work equipment lock lever (3) is also in the locked position. B. Make sure the directional lever (2) is set in the neutral position as the engine will not start with the lever in F or R position.
Page 110 If it continues not to start, contact your Komatsu dealer for repairs. Once the engine has started increase the RPM slightly to warm the engine up. Avoid rapped and high speed acceleration, doing so may damage the engine.
Page 111: Starting Your Work Operations
Run the engine under a light load until engine cooling water temperature gauge (4) and HST oil temperature gauge (5)are in the white range. Check for any abnormal exhaust gas color, noise or vibration. If any abnormality is found, contact your Komatsu distributor. WA320PT-5L 2-59...
Page 112: Parallel Tool Kit
OPERATION PARALLEL TOOL KIT The 6-segment parallelogram-style linkage is designed to keep the attachment level while lifting a variety of materials. The hydraulic Quick Couplers allows the operator the ability to interchange attachments if needed. WORK EQUIPMENT CONTROL LEVERS • Work equipment control levers •...
Page 113: Using The Forks
OPERATION USING THE FORKS FORK LIFT LIMITATIONS Before handling materials with the forks it is important to understand the limitations of the machine when loaded. Static tipping loads and operating weight shown in the chart below include lubricants, coolant, fuel and machine components. Machine stability and operating weight are affected by the counterweight, tire size, ground conditions and other attachments.
Page 114: Load Handling Safety Tips
OPERATION LOAD HANDLING SAFETY TIPS ★ The following explanation of the method of operating the forklift does not cover all situations. The operating method differs according to each operating condition. When operating the forklift, use the safest and most efficient method. ★...
Page 115 OPERATION Carefully tilt the forks back slightly so that the load rests against the backrest of the carriage. Raise the load slightly to clear the surface you are removing it from. Check that there are no obstacle behind the machine, then drive the machine slowly in reverse until the load is over an area where it can be lowered.
Page 116: Transporting A Load
OPERATION TRANSPORTING A LOAD • When traveling with a load, do not turn suddenly or accelerate or decelerate suddenly. There is a danger the load will fall off or the machine could rollover. • The fork tilt angle differs according to the load. If loads are stacked on top of each other, and the tilt angle is excessive, there is a danger the top load will extend over the backrest of the carriage and slip on to the rear loader arms or wheels.
Page 117 OPERATION Drive the machine slowly in reverse and remove the forks from the load. Lower the forks. WA320PT-5L 2-65...
Page 118: Adjusting The Work Equipment
OPERATION ADJUSTING THE WORK EQUIPMENT The boom kick out makes it possible to set the bucket so that it automatically stops at the desired lifting height (lift arm higher than horizontal) and the bucket positioner makes it possible to set the bucket so that it automatically stops at the desired digging angle.
Page 119: Bucket Level Indicator
OPERATION Set the attachment selector switch to bucket position (a) Loosen 2 bolts (1), adjust the position of mounting bracket (4) of the proximity switch so that the rear tip of bar (2) is in line with the center of the sensing surface of proximity switch (3), then tighten bolts to hold the bracket in position.
Page 120 OPERATION Set the attachment selector switch to fork position (b). Loosen nut (1), then adjust the position of the proximity switch so that the rear tip of bar (2) is in line with the center of the sensing surface of proximity switch (3). Adjust nut (1) so that the clearance between bar (2) and the sensing surface of proximity switch (3) is 3 to 5 mm, then tighten the nut to hold in position.
Page 121: Using The Hydraulic Quick Coupler
OPERATION USING THE HYDRAULIC QUICK COUPLER Before operating the machine, check to be sure the attachment is correctly connected. If it is not correctly installed, the attachment may fall off and cause serious injury. Check that the quick coupler attachment switch is at the CONNECT position.
Page 122: Installing The Attachment
OPERATION Tilt the coupler forward slowly and lower it slowly so that it separates from the attachment hook. Drive the machine slowly in reverse and separate the attachment from the machine. Push in the quick coupler attachment switch to CONNECT position (b).
Page 123 OPERATION Tilt the coupler forward, drive the machine slowly forward and set so that the attachment hook is aligned with the puller tube. Raise the coupler slowly, connect the coupler tube to the attachment hook, then raise the coupler until the attachment rises slightly off the ground.
Page 124 OPERATION Check that the coupler plunger is completely inserted. 2-72 WA320PT-5L...
Page 125: Traveling, Stopping And Parking The Machine
OPERATION TRAVELING, STOPPING AND PARKING THE MACHINE Before traveling or moving the machine, it is important to know all the control functions and relevant safety regulations for the area you will be traveling or moving the machine in. If you will be traveling on state or local roadways, observe all traffic safety laws.
Page 126 Be sure the backup alarm sounds when the directional lever is in the REVERSE mode. If the backup alarm does not sound, contact your Komatsu distributor for repairs. Release brake pedal, then depress accelerator pedal to start the machine moving.
Page 127: Changing Direction
When the steering wheel reaches the end of its stroke, do not try to turn it any further. Check the play it should be 50 to 100 mm (2.0 to 3.9 in) in the steering wheel. If any abnormality is found, contact your Komatsu dealer for inspection. TURNING ON SLOPES Traveling on slopes is dangerous in general.
Page 128: Emergency Steering (If Equipped)
OPERATION EMERGENCY STEERING (IF EQUIPPED) Never actuate the emergency steering except during emergencies or when checking the function. When using the emergency steering, travel at a speed of less than 5 km/h (3.1 MPH). Emergency steering lamp (green) (2) lights up to inform the operator that the emergency steering system is working normal.
Page 129: Stopping The Machine
OPERATION STOPPING THE MACHINE • Avoid stopping suddenly. Give yourself ample room when stopping. • Even if the parking brake lever is in the LOCK position, there is a danger the machine may move until the parking brake lamp lights up, keep the brake pedal depressed.
Page 130: Parking The Machine
OPERATION PARKING THE MACHINE Do not park the machine on slopes. If the machine has to be parked on a slope, set it facing directly down the slope, then dig the bucket into the ground and put blocks under the tires to prevent the machine from moving.
Page 131 OPERATION Lower the lift arm and bucket to the ground. Set safety lock lever to the LOCK position. 7. Allow the engine to run at a low idle for about 5 minutes to cool down gradually. Never shut down an engine that is over heating or has just finished work operations always allow it a time to cool down before turning the ignition key to the “OFF”...
Page 132: Transporting The Machine
OPERATION TRANSPORTING THE MACHINE Before transporting the machine be sure what you are using to transport the machine is capable of supporting the weight and size of the machine. Be sure it is wide enough and rated for the load. LOADING AND SECURING THE MACHINE •...
Page 133: Lifting The Machine
OPERATION LIFTING THE MACHINE Lifting hooks (A) are located in 4 places on the machine as shown in the diagram below. Use only these 4 places when lifting; do not use any other places. There is a serious danger that the machine may lose its balance. Always stay clear of the machine and maintain a safe distance when lifting it.
Page 134: Using Wire Rope
Always make sure that the wire rope used for lifting the machine is of ample strength for the weight of the machine. • When carrying out the lifting operation, please contact your Komatsu distributor. The lifting procedure applies to machines with standard specifications.The method of lifting differs according to the attachments and options actually installed.
Page 135 OPERATION Once at the travel height, lock the controls and cut the engine off. Place the directional lever in the N (neutral) position and set the parking brake. Lock the frames with the safety bar. Using the lifting points, carefully lift the machine. Stay clear of the machine at a safe distance until at this point the machine is fully resting in place and the cables are slack.
Page 136: Towing The Machine
OPERATION TOWING THE MACHINE If this machine must not be towed except in emergencies. When towing the machine, take the following precautions. Align the towing pin (1) with groove (2) in the counterweight, then insert the pin and turn it 180 To prevent the towing pin from turning, fold the handle of the towing pin and set it in position.
Page 137: Cold Weather Operation
Antifreeze is toxic. Be careful not to get it into your eyes or on your skin. If it should get into your eyes or on your skin, wash it off with large amount of fresh water and see a doctor at once. When changing the coolant contact your Komatsu distributor.
Page 138: Long-Term Storage
OPERATION LONG-TERM STORAGE BEFORE STORAGE When putting the machine in storage for a long time, do as follows. • Clean and wash all parts, then store the machine indoors. If the machine has to be stored outdoors, select level ground and cover the machine.
Page 139 3MAINTENANCE WA320PT-5L...
Page 140: Basic Troubleshooting
MAINTENANCE BASIC TROUBLESHOOTING ENGINE Problem Main Cause Remedy • Low oil level in oil pan • Add oil to engine • Clogged oil filter • Replace filter cartridge Engine oil pressure lamp remains on • Defective turbo oil piping • Check for excessive oil leakage •...
Page 141: Chassis
MAINTENANCE CHASSIS Problem Main Cause Remedy • Parking brake is applied • Release parking brake fully • Directional lever is not shifted • Shift lever properly Engine is running, in F or R position properly bud foes not move • Check fuse or electrical system •...
Page 142: Electrical
MAINTENANCE • Poor quality oil • Replace with good quality oil Excessive bubbles in the oil • Lack of oil • Add oil to specified level • Air in the oil • Bleed air from system • Lack of oil causes pump to suck in Lack of oil pressure •...
Page 143: Guide To Maintenance
Only perform repair operations on firm and level ground, after applying the parking brake. • Use Komatsu genuine oils and greases; choose oils suitable for the ambient temperature. • Use clean oils and greases. Keep the oil and grease containers clean. Keep any foreign matter away from oils and greases.
Page 144: Carrying Out Kowa (Komatsu Oil Wear Analysis)
Make sure that the oil is well mixed before sampling. • Carry out sampling regularly at fixed intervals. • Do not carry out sampling on rainy or windy days when water or dust can get into the oil. For further details of KOWA, please contact your Komatsu Dealer. WA320PT-5L...
Page 145: Wear Parts
The wear parts should be replaced correctly in order to ensure more economic use of the machine. When replacing parts, always use Komatsu genuine parts. As a result of our continuous efforts to improve product quality, the part number may change, so inform your Komatsu Dealer of the machine serial number and check the latest part number when ordering parts.
Page 146: Fuel Specifications
MAINTENANCE FUEL SPECIFICATIONS When purchasing fuels, coolants to lubricants it is important to follow the recommendations set forth by Komatsu. Using non recommended fuels, lubricants or coolants may damage the machine or reduce the machines efficiency. FUELS Use only diesel fuel No 2 Fuel Specification: ASTM D975 •...
Page 147: Notes Regarding The Electrical System
3.Check the battery electrolyte level. • Do not remove or eliminate any electrical component installed on the machine and do not install any electrical component with characteristics different from those specified and approved by Komatsu. • Be careful to keep the electric system dry.
Page 148: Proper Selection According To The Ambient Temperature
Coolant Anti-freeze Summer coolant (5.28 US gal) system OPTION FOR VERY COLD AREAS: If the temperature exceeds 10° C (50° F), contact your Komatsu Dealer for advise on the type of oil and fuel to be used. 3-10 WA320PT-5L...
Page 149: Standard Tightning Torques
Unless otherwise specified, tighten the metric nuts and bolts to the torque shown in the table below. If it is necessary to replace any nut or bolt, always use a Komatsu genuine part of the same size as the part that was replaced.
Page 150: Periodic Replacement Of Safety Critical Parts
When replacing the hoses, always replace the O-rings, gaskets, and other such parts at the same time. Ask your Komatsu Dealer to replace the critical parts. Safety critical parts for periodic replacement Q’ty...
Page 151: Maintenance Schedule Chart
MAINTENANCE MAINTENANCE SCHEDULE CHART This is a schedule outlining the maintenance to be performed on the machine according to the hours accumulated on the machine. Following these scheduled items will prolong the life of the machine. Section - Page Maintenance Interval And Item SERVICING WHEN REQUIRED Check, Clean, Or Replace Air Cleaner Element 3-15...
Page 152: Every 1000 Hours Service
MAINTENANCE EVERY 1000 HOURS SERVICE Changing Oil In Transfer Case 3-40 Cleaning Transfer Case Breather 3-41 Replacing HST Oil Filter Element 3-42 Lubricating Chassis 3-42 Checking Parts Of Turbocharger 3-43 Checking Play In Turbocharger Rotor 3-43 Checking Alternator Belt Tension, Replace 3-43 EVERY 2000 HOURS SERVICE Changing Hydraulic Oil And Filter Element...
Page 153: Servicing When Required
MAINTENANCE SERVICING WHEN REQUIRED CHECK, CLEAN OR REPLACE AIR CLEANER ELEMENT If inspection, cleaning, or maintenance is carried out with the engine running, dirt will get into the engine and damage it. Always stop the engine before carrying out these operations. When using com- pressed air, there is danger that dirt may be blown around and cause serious injury.
Page 154: Replace Air Cleaner Element
MAINTENANCE Clean the interior of the air cleaner body, cover (3) and evacuator valve (6). The inner element must not be used again even after its cleaning. When replacing the outer element and seal (7) replace them at the same time. Direct dry compressed air Max.
Page 155 MAINTENANCE Remove outer element (4). Do not remove inner element (5) at this time. Clean the interior of the air cleaner body, cover (3) and evacuator valve (6). Remove inner element (5), then install a new inner element immediately. Fit new outer element (4), replace O-ring (7) with a new part, install cover (3), then secure with clips (2).
Page 156: Flushing The Cooling System
30% by volume is necessary. In areas where the water is hard, always add Komatsu genuine corrosion resistor agent KI. One packet of corrosion resistor agent contains 100g (0.22 lb).
Page 157 Use distilled water for the cooling water. Do not use river water, well water, contact your Komatsu Dealer. We recommend use of an antifreeze density gauge to control the mixing proportions. •...
Page 158: Checking Oil Level In Transfer Case, Add Oil
MAINTENANCE CHECKING OIL LEVEL IN TRANSFER CASE, ADD OIL The parts and oil are at high temperature immediately after the engine is stopped, and may cause burns. Wait for the temperature to go down before starting the work. Carry out this procedure if there is any sign of low oil on the transfer case. Start the engine and run it at low idling for at least 5 minutes.
Page 159: Checking Axle Oil Level, Add Oil
MAINTENANCE CHECKING AXLE OIL LEVEL, ADD OIL • When checking the oil level, apply the parking brake and secure the front and rear frames with the safety bar. After stopping the engine, the parts and oil are at a high temperature. Wait for the temperature to go down before starting the operation.
Page 160: Cleaning Axle Case Breather
MAINTENANCE CLEANING AXLE CASE BREATHER When cleaning the axle breather, apply the parking brake and secure the front and rear frames with the safety bar. • A: Front B: Rear Remove all mud and dirt from around the breather. After removing the mud or dirt from around the breather, remove the breather, immerse it in cleaning fluid and clean it.
Page 161: Checking Window Washer Fluid Level
MAINTENANCE CHECKING WINDOW WASHER FLUID LEVEL Check the washing fluid levels in washer tank (1). When the fluid has run low, add automotive window washing fluid. Be careful not to let dust get into the fluid. CLEANING RADIATOR COOLING FINS •...
Page 162: Cleaning Transfer Oil Cooler Fins
CHECKING ELECTRICAL INTAKE AIR HEATER Before the start of the cold season (once a year), contact your Komatsu Dealer to have the electrical intake air heater checked for dirt or disconnections. REPLACING BOLT ON CUTTING EDGE It is extremely dangerous if the work equipment moves when carrying out the turning or replacement operation.
Page 163: Replacing Bucket Teeth
CHECKING AIR CONDITIONER Inspect the condition of the air conditioning system, if any abnormality, leakage or the air conditioner is not working properly, contact you Komatsu dealer. Do not tamper with the air conditioning system. WA320PT-5L 3-25...
Page 164: Replacing Slow Blow Fuse
MAINTENANCE REPLACING SLOW BLOW FUSE Always turn the power OFF when replacing the slow blow fuse (turn the ignition switch to the “OFF” position). Always replace the slow blow fuse with a fuse of the same capacity. Turn the ignition switch to the “OFF” position. Remove the slow blow fuse box from the chassis.
Page 165: Selection And Inspection Of Tires
Select the tires according to the conditions of use and the weight of the attachments of the machine. Use the following table. Since the travel speed indicated on the speedometer varies with the tire size, consult your Komatsu Dealer when using optional tires.
Page 166: Every 50 Hours Service
MAINTENANCE EVERY 50 HOURS SERVICE DRAIN WATER, SEDIMENT FROM FUEL TANK Loosen valve (1) on the left side of the tank so that the sediment and water will be drained together with fuel. 3-28 WA320PT-5L...
Page 167: Every 100 Hours Service
MAINTENANCE EVERY 100 HOURS SERVICE Maintenance for every 50 hours service should be carried out at the same time. LUBRICATING REAR AXLE PIVOT PIN 3 places Using a grease pump, pump in grease through the grease fittings marked by the arrows. After greasing, wipe off any old grease that was pushed out.
Page 168: Checking Oil Level In Hydraulic Tank, Add Oil
MAINTENANCE CHECKING OIL LEVEL IN HYDRAULIC TANK, ADD OIL • The parts and oil are at high temperature after the engine is stopped, and may cause burns. Wait for the temperature to go down before starting the work. • When removing the oil filler cap, turn it slowly to release the internal pressure, then remove it. Lower the bucket to the ground and stop the engine.
Page 169: Every 250 Hours Service
If distilled water is added to above the U.L. line, use a syringe to lower the level to the U.L. line. Neutralize the removed fluid with baking soda (sodium bicarbonate), then flush it away with a large amount of water or consult with your Komatsu Dealer or battery maker. WA320PT-5L...
Page 170: Side
If distilled water is added to above the bottom of the sleeve, use a syringe to lower the level to the bottom of the sleeve. Neutralize the removed fluid with baking soda (sodium bicarbonate), then flush it away with a large amount of water or consult with your Komatsu Dealer or battery maker. 3-32...
Page 171: Checking Parking Brake
In particular, be sure to check that the V-belt is not touching the bottom of the V-groove. In case any of the following occurs, ask the Komatsu Dealer in your territory to replace the belts with new ones. •...
Page 172: Checking For Loose Wheel Hub Bolts, Tightening
MAINTENANCE CHECKING FOR LOOSE WHEEL HUB BOLTS, TIGHTENING If wheel hub nuts (1) are loose, tire wear will be increased and may cause accidents. Check for loose nuts, and tighten if necessary. When checking for loose nuts, always turn the nuts in the direction of tightening to check.
Page 173: Lubricating Work Equipment
MAINTENANCE LUBRICATING WORK EQUIPMENT On job sites where there is a lot of heavy-duty work, or on job sites where operations are carried out continuously for more than eight hours, reduce the greasing interval and carry out greasing more frequently. Place the work equipment horizontally in contact with the ground, then stop the engine.
Page 174 MAINTENANCE • (6) Tilt lever pin (1 place) • (7) Steering cylinder pin (4 places) 3-36 WA320PT-5L...
Page 175: Every 500 Hours Service
Loosen drain plug (P) and drain the oil. Be careful not to get oil on yourself. Check the drained oil, and if there are excessive metal particles or foreign material, please contact your Komatsu Dealer. Tighten drain plug (P). Open the engine side cover on the left side of the chassis.
Page 176: Replacing Engine Oil Filter Cartridge
MAINTENANCE REPLACING ENGINE OIL FILTER CARTRIDGE • Container to catch the oil • Filter wrench Open the engine side cover on the right side of the chassis. Set the container to catch the fuel under the filter cartridge. Using a filter wrench, turn filter cartridge (1) counterclockwise to remove it.
Page 177: Cleaning Water Separator Strainer
MAINTENANCE CLEANING WATER SEPARATOR STRAINER Open the engine side cover on the right side of the chassis. Prepare a container to catch the drained fuel and set it under the water separator. Loosen drain valve (1) at the bottom of the water separator and drain the fuel into the container.
Page 178: Every 1000 Hours Service
MAINTENANCE EVERY 1000 HOURS SERVICE Maintenance for every 50, 100, 250 and 500 hours service should be carried out at the same CHANGING OIL IN TRANSFER CASE • Refill capacity: 6.5 liters (1.72 US gal) Set a container to catch the oil under drain plug (P), then remove drain plug (P) and drain the oil.
Page 179: Cleaning Transfer Case Breather
MAINTENANCE CLEANING TRANSFER CASE BREATHER Remove cover (1). Remove the mud and dirt from around the breather (2), then remove breather (2). After removing the breather, take steps to prevent dirt or dust from entering the mount. Soak the breather (2) in washing liquid and wash it. WA320PT-5L 3-41...
Page 180: Replacing Hst Oil Filter Element
MAINTENANCE REPLACING HST OIL FILTER ELEMENT • The parts and oil are at high temperature. Wait for the temperature to go down before starting the work. • When removing the oil filler cap, turn it slowly to release the internal pressure, then remove it. Remove cover (1).
Page 181: Checking Parts Of Turbocharger
The machine is equipped with an auto tensioner, so there is no need to adjust the tension. If the alternator drive belt is in the following condition, the belt must be replaced. Please ask your Komatsu Dealer to replace the belt. • When horizontal scratch (1) crosses vertical scratch (2) •...
Page 182: Every 2000 Hours Service
MAINTENANCE EVERY 2000 HOURS SERVICE Maintenance for every 50, 100, 250, 500 and 1000 hours service should be carried out at the same time. CHANGING HYDRAULIC OIL AND FILTER ELEMENT • The parts and oil are at high temperature after the engine is stopped, and may cause burns. Wait for the temperature to go down before starting the work.
Page 183: Replacing Hydraulic Tank Breather Element
MAINTENANCE REPLACING HYDRAULIC TANK BREATHER ELEMENT • The parts and oil are at high temperature after the engine is stopped, and may cause burns. Wait for the temperature to go down before starting the work. • When removing the oil filler cap, turn it slowly to release the internal pressure, then remove it.
Page 184: Replacing Air Conditioner Recirculation Air Filter
Check for any problems, if problems are found contact your Komatsu Dealer to inspect the system. CHECKING ENGINE VALVE CLEARANCE, ADJUST If engine valve train sounds nosey or engine is running rough contact your Komatsu Dealer to adjust the valves. CHECKING BRAKE DISC WEAR •...
Page 185: Cleaning And Check Turbocharger
Komatsu Dealer to check the accumulator gas pressure. CHECKING VIBRATION DAMPER Check for cracks or peeling on the outside surface of the rubber. If any cracks or peeling are found, contact your Komatsu Dealer to have the parts replaced.
Page 186: Every 4000 Hours Service
Drive shaft spline (1 place) CHECK WATER PUMP Check for play in the pulley or any grease leakage, coolant leakage, or clogging of the vent hole. If any abnormality is found, contact your Komatsu Dealer for repair or replacement. 3-48 WA320PT-5L...
Page 187: Additional Service Tips
MAINTENANCE ADDITIONAL SERVICE TIPS Occasionally you may run into items that may need servicing out of the normal service hour times. Outlined are several items to be aware of when servicing the machine. HANDLING CAB WIPER When angling the wiper arm (1) to the front, check that the wiper blade is hanging free.
Page 188: Battery Servicing
MAINTENANCE BATTERY SERVICING On occasion the battery may need immediate care due to age or weather conditions. Below is an outline relating to several instances that may occur during the life of the machine. The batteries are located at the rear of the machine in compartments (1).
Page 189: Precautions When Charging The Battery
MAINTENANCE PRECAUTIONS WHEN CHARGING THE BATTERY When charging the battery, if the battery is not handled correctly, there is danger that the battery may explode. Always follow the instructions in the battery instruction manual and charger instruction. • Do not use or charge the battery if the battery electrolyte level is below the LOWER LEVEL line.
Page 190: Connecting The Booster Cables And Starting The Engine
MAINTENANCE CONNECTING THE BOOSTER CABLES AND STARTING THE ENGINE Keep the ignition switch of the normal machine and problem machine in the OFF position. Connect the booster cable as follows, in the order of the numbers marked in the diagram. Connect one clip of booster cable (A) to the positive (+) terminal of the problem machine.
Page 191 4SPECIFICATIONS WA320PT-5L...
Page 192: Specifications
SPECIFICATIONS TECHNICAL DATA OVERALL DIMENSIONS WITH WORK EQUIPMENT ATTACHED FORK LIFT KIT Static tipping load - boom level Fork level, 610 mm (24 in) Straight 8290 kg (18,276 lbs) 7212 kg (15,899 lbs) Load center Full turn (40 Operating weight (including 1 operator: 75kg (165lbs) and forks 14588 kg (32,161 lbs) Fork tine length...
Page 193: Material Handling Arm
SPECIFICATIONS MATERIAL HANDLING ARM Boom Position Retracted Mid-position Extended Reach, fully raised 2171mm (7’/1”) 2802mm (9’/2”) 3433mm (11’/3”) Height, fully raised 4056mm (13’/3”) 4769mm (15’/8”) 5483mm (18’/0”0 Maximum reach 3998mm (13’/1”) 4950mm (16’/3”) 5902mm (19’/4”) Height, maximum reach 2002mm (6’/7”) 2002mm (6’/7”) 2002mm (6’/7”) Depth, below ground...
Page 194: Loader Bucket
SPECIFICATIONS LOADER BUCKET Bucket type with bolt on cutting edge Stockpile Heaped 2.65m (3.5yd Bucket capacity Struck 2.2m (2.9yd Bucket width 2740mm (22,544lbs) Straight 10226kg (22,544lbs) Static tipping load 8896kg (19,612lbs) Full turn (40 Operating weight (including 1 operator: 75kg (165lbs) and bolt on cutting edge 15425kg (34,010lbs) Bucket weight...
Page 195: Basic Machine Specifications
Model ........
Page 196: Axles And Final Drives
SPECIFICATIONS AXLES AND FINAL DRIVES Drive system ................Four-wheel drive Front .
Page 197: Recommended Lubricants
SPECIFICATIONS RECOMMENDED LUBRICANTS When using commercially available oils other than Komatsu genuine oil, or when checking the latest specifications, refer to the Komatsu web page or consult your Komatsu distributor. See the following table: Engine Oil [CD or CE] Anti-freeze Coolant...
Page 198 SPECIFICATIONS Multi-purpose white ✽ Supreme duty fleet Multi-purpose 4092 grease705 Anti-freeze and PENNZOIL motor oil Multi-purpose 4140 707L White-bearing summer coolant grease FINA potonic N PETROFIN E FINA Kappa TD FINA marson EPL2 FINA tamidor FINA potonic NE Spirax EP SHELL Rimura X Albania EP grease...
Page 199 5OPTIONAL ATTACHMENTS WA320PT-5L...
Page 200: Optional Attachments
Failure to do so may result in damage to the equipment or injury to the operator. Komatsu cannot be held liable for damage, accident or reduction of machinery performance due to the application and use of unauthorized equipment.
Page 201: Using Loader Work Equipment
OPTIONAL ATTACHMENTS USING LOADER WORK EQUIPMENT Lift arm control lever (1) and bucket control lever (2) can be used to operate the lift arm and bucket as follows. Basic Precautions • When using the loader for any loading, digging or grading operations avoid any wheel slippage, this will damage the tires.
Page 202 OPTIONAL ATTACHMENTS When The Material Is Stockpiled: Keep the cutting edge of the bucket at a horizontal angle, using the inching brake pedal in combination with the accelerator pedal, increase the RPM while slowly releasing the left brake pedal as you proceed into the pile slowly with the bucket bottom edge flat on the ground.
Page 203: Load And Carry Operations
OPTIONAL ATTACHMENTS If there is too much material in the bucket, tip the bucket forward slightly to dump excess material then tilt it back when the load is ready to transport. Remark Be careful not to get blasted rock under the bucket. This will cause the front tires come off the ground and slip.
Page 204: Cutting Or Digging
OPTIONAL ATTACHMENTS CUTTING OR DIGGING When digging or cutting a grade on level ground, set the bucket edge facing down slightly. Always be careful not to load the bucket on one side and cause an unbalanced load situation. This operation should be carried out in 1st gear. Do not angle the bucket facing down more than 20 degrees.
Page 205: Grading Or Leveling A Surface
OPTIONAL ATTACHMENTS GRADING OR LEVELING A SURFACE • Always operate the machine in reverse when carrying out leveling operations. • Although not advised, if it is necessary to carry out leveling operations when traveling forward, do not angle the bucket down more than 20 degrees. •...
Page 206: Using Multi-Function Lever
OPTIONAL ATTACHMENTS USING MULTI-FUNCTION LEVER 1. Work equipment lever 2. Directional selector switch 3. Directional selector switch actuation switch 4. Directional selector pilot lamp EXPLANATION OF OPERATION WORK EQUIPMENT LEVER Use this lever (1) to operate the lift arm and bucket. Do not use the FLOAT feature when using the forks kit.
Page 207: Directional Selector Switch
OPTIONAL ATTACHMENTS • The lift arm moves freely under external force. Position (e): TILT • When the work equipment control lever is pulled further beyond the TILT position, the lever is stopped in this position until the bucket reaches the preset position of the positioner, and the lever is returned to the HOLD position.
Page 208: Directional Selector Lamp
OPTIONAL ATTACHMENTS DIRECTIONAL SELECTOR LAMP This lamp (4) displays the position of the directional selector switch under the following conditions. • Directional selector switch operation switch: ON position • Directional lever: N position • F lights up: FORWARD • N lights up: NEUTRAL •...
Page 209 OPTIONAL ATTACHMENTS Place the directional selector switch actuation switch (3) at the ON position (a). Place the directional selector switch (2) at the F (forward) or R (reverse) position. When the directional selector switch actuation switch (3) is at the ON position, if the directional lever (1) is operated to FORWARD or REVERSE, the machine will travel in forward or reverse according to the operation of the directional lever, regardless of the position of the...
Page 210: Optional Work Equipment
OPTIONAL WORK EQUIPMENT COUPLER SYSTEM The versatile, factory-supplied coupler system provides fast, efficient tool changes without leaving the cab. Your Komatsu tool carrier allows interchangeability between models as well as several major manufacturers. This design also allows superior visibility of the work equipment.
Page 211 Komatsu America Corp. PROPOSAL FOR MANUAL OR CSS REVISION DataKom Publications & Training 440 North Fairway Drive Vernon Hills, IL. 60061-8112 U.S.A. Attn: Service Publications Fax No. (847)-970-4186 DATE: FOR INTERNAL USE ONLY -- No.PMR NAME OF COMPANY: CITY: STATE OR PROVINCE:...

Komatsu GALOE WA320PT-5L Operation And Maintenance Manual

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