1. Manuals
  2. Brands
  3. Broderson Manuals
  4. Construction Equipment
  5. RT-400-A
  6. Operation and maintenance manual

Broderson RT-400-A Operation And Maintenance Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

PRINTED IN USA
P/N 990-30225
MAINTENANCE MANUAL
OWNER:_______________________________________________________________________
_______________________________________________________________________
_______________________________________________________________________
SOLD AND SERVICED BY:________________________________________________________
MODEL NO._________________________ SERIAL NO.
OPERATION AND
RT-400-A
________________________________________________________
________________________________________________________
COPYRIGHT 2017
BRODERSON MFG. CORP.
LENEXA, KANSAS 66215
_____________________________

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the RT-400-A and is the answer not in the manual?

Questions and answers

Related Manuals for Broderson RT-400-A

Summary of Contents for Broderson RT-400-A

  • Page 1 PRINTED IN USA COPYRIGHT 2017 P/N 990-30225 BRODERSON MFG. CORP. LENEXA, KANSAS 66215 OPERATION AND MAINTENANCE MANUAL RT-400-A OWNER:_______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ SOLD AND SERVICED BY:________________________________________________________ ________________________________________________________ ________________________________________________________ MODEL NO._________________________ SERIAL NO. _____________________________...
  • Page 2 STATEMENT OF WARRANTY FOR MOBILE CRANES Broderson Manufacturing Corp. ("BMC") warrants its products to be free from defects in material or workmanship at the date of shipment from BMC. This warranty shall be effective only when validated by the return to BMC of its standard form of Warranty...

  • Page 3: Table Of Contents

    TABLE OF CONTENTS SECTION 1 DESCRIPTION AND SPECIFICATIONS Introduction..............1-1 Dimensions and Orientation........... 1-2 Turning Dimensions...………………………………...…... 1-3 Description and Specifications........1-4 SECTION 2 OPERATION Safety Rules..............2-1 Instruments and Controls..........2-9 Control Functions............2-9 Sequence of Operation…..……………………………... 2-13 Driving the Vehicle........... 2-13 Normal Gauge Readings.........
  • Page 4 SECTION 3 MAINTENANCE (CONTINUED) Mechanical Adjustments General............3-41 Chain Adjustments........... 3-39 Rotation Gearbox Adjustment......3-41 Run Pad Adjustment…………......3-14 Wheel Alignment..........3-23 Parking Brake, Bleeding & Adjusting......3-21 Purging the Hydraulic System........3-34 Rotation Bearing Lubrication........3-15 Steering System............3-31 Towing……..............

  • Page 5: Introduction

    RT-400-A ROUGH TERRAIN CRANE INTRODUCTION The Broderson RT-400-A was designed and built to provide safe, dependable, and efficient crane service. That, we warrant, by our testing and quality control procedures. To properly utilize the full potential of the equipment, the following customer controlled conditions must exist: The operator must understand the equipment.

  • Page 7: Turning Dimensions

    RT-400-A TURNING DIMENSIONS...

  • Page 8: Description And Specifications

    SECTION 1 DESCRIPTION AND SPECIFRTATIONS The RT-400-A is a self-propelled Industrial Crane designed for lifting and material handling, with special features of 4-wheel steer and 4-wheel drive. The basic unit consists of a chassis and hydraulic boom assembly. The chassis includes: a frame, 4 hydraulic independently-controlled outriggers, engine, a 2-range;3-speed transmission, front steering/driving axle and rear...
  • Page 9 General: (continued) Extension: W/O Boom Extension With Boom Extension Sheave Height (Nominal): 80 feet (24.38 m) 98.0 feet (29.87 m) Horizontal Reach: 65 feet (19.81 m) 85 feet (25.91 m) Weight: Total 51,900 pounds (23500 kg) Front Axle 30,000 pounds (13600 kg) Rear Axle 21,900 pounds (9900 kg) Turning Radius: (4-Wheel Steering)
  • Page 10 Forward gear ratios and speeds: Reverse gear ratios and speeds: GEAR RATIO SPEED GEAR RATIO SPEED 8.93 2.1 mph (3.4 km/h) 8.93 2.7 mph (4.3 km/h) 4.63 4.0 mph (6.4 km/h) 4.63 6.3 mph (10.1 km/h) 1.70 10.5 mph (16.9 km/h) 1.70 mph (25.4 km/h) 3.75...
  • Page 11 Chassis Options and Accessories: Auxiliary Winch: Optional planetary gear winch, mounted under the chassis. With electronic push button controls located in the operator compartment. Hydraulic powered to provide bare drum line pull of 15,000 lbs (6800 kg) and 40-ft/min (12 m/min) line speed on the 4th layer. Includes 125 feet (38.1 m) of 9/16-inch (14 mm) diameter 6x36 EIP-RRL-IWRC wire rope, minimum breaking force of 33,600 pounds (150 kN).
  • Page 12 Dash Display: In-dash LCD screen shows engine data including RPMs, coolant temperature, battery voltage, fuel level, engine oil pressure, DEF fluid level percent. Display also shows engine hourmeter. Display also shows engine fault codes and control system faults. Screen indicates hydraulic oil temperature. Also included.
  • Page 13 Main Hoist Rope: Main hoist rope is 5/8” diameter, Compact 35 rotation resistant rope, RRL lay, 2160 Grade, minimum breaking strength 56,400 lbs (251 kN), 425’ (130 m) long. Weight per foot is 0.88 lbs (1.31 kg per m). Note that rope weight is not included in load calculations. Downhaul Weight and Hook: Downhaul weight and 14,000-pound (6350 kg) rated swivel hook to use with wedge socket on 5/8-inch (16 mm) load line.

  • Page 15: Operation

    OPERATION SAFETY RULES GENERAL: 1. Since the manufacturer has no direct control over machine application and operation, conformance with good safety practice is the responsibility of the owner and operator. 4. The operator shall be responsible for those operations under his direct control. Whenever there is any doubt as to safety, the operator shall have the authority to stop and refuse to handle loads until safety has been assured.
  • Page 16 8. The Rated Capacity Limiter must be checked after each setup for the proper operating configuration on the display.
  • Page 17 LIFTING: 1. Always refer to Crane Capacity Chart in operator's compartment before handling load. Do not exceed load ratings. Under some conditions the standard capacity ratings cannot be recommended and must be adjusted downward to compensate for special hazards, such as weak supporting ground, wind, hazardous surroundings, operator inexperience, etc.
  • Page 18 9. Always use outriggers if possible. If you must lift on rubber, keep the load as close to the ground as possible to prevent tipping. Move the load very slowly and use tag lines to prevent load swinging. 10. Crane may tip at less than rated loads if the surface is uncompacted or wet soil, or soft soil with frozen crust, thin or cracked pavement, or surface near a hole or ledge.
  • Page 19 CAUTION Keep hands out of Anti-Two-Block mechanism. Serious injury can result from moving parts. 18. Avoid two-blocking. A. Stop raising hoist line before downhaul or hook block strikes boom tip plates. B. Pay out hoist line while extending boom. C. Maintain clearance between downhaul weight or hook block and boom tip while booming down.
  • Page 20 When transporting the crane, be sure it is properly secured to the vehicle. Utilize the tie- down anchors, as indicated on the crane, to stabilize the load and prevent shifting during transport. Use caution to not over-tighten the chains and binders when securing the crane to the transport vehicle.
  • Page 21 TRAVEL: 1. For Pick and Carry operation: Traveling with suspended loads involves many variables, such as ground conditions, boom length and vehicle acceleration. For such operations, the user must evaluate prevailing conditions and determine safe practices using precautions, such as the following: A.
  • Page 22 8. Shut off engine before refueling, and remove fuel cap slowly. Vapor pressure in tank can cause a burst of fuel and vapor when the cap is removed. Always refuel with proper fuel and into proper tank. 9. Know your visibility limitations. Loads being carried hanging on the hook can add further limitations to visibility during travel.

  • Page 23: Instruments And Controls

    INSTRUMENTS AND CONTROLS The RT-400 instrument panel is equipped with a monitor display that includes warning lights and push buttons to change display screens. The display includes:  Machine Fuel Level  Engine Hour Meter Machine  Hydraulic Temperature  Engine RPM Tachometer ...
  • Page 24 The ignition switch is key-operated and has OFF, RUN and START positions. The ignition switch should always be turned off and the key removed when the vehicle is left unattended. The BMC RT-400 is equipped with a standard lighting package. The controls for the lights are located in the 15-button panel located below the main display screen.
  • Page 25 The powershift transmission is controlled through the series of buttons on the 12-button panel to the right of the operator. There are two ranges for this transmission and 3 gears in each range for FORWARD and REVERSE. The shifting is electronically-controlled. The transmission and drive train components can be damaged by shifting from forward to reverse or vice versa while the unit is in motion, or while the engine speed is above 1000 RPM.

  • Page 26: Control Functions

    CONTROL VALVE FUNCTIONS The control valves for the RT-400 utilize a pilot hydraulic system, whereas the valves are not mounted in the cab. Boom Function: Controls for operating boom rotation, boom elevation, boom extension and hoist are actuated by four, single-axis joysticks with two mounted to each arm rest of the operator compartment. The joystick handles are hydraulically connected to the remote- mounted hydraulic control valves.

  • Page 27: Sequence Of Operation

    SEQUENCE OF OPERATION DRIVING THE VEHICLE The following procedure is recommended for driving the vehicle: Perform the daily inspection and test. (See Page 3-4) Start engine and allow a warming period. While warming the engine, set up the Rated Capacity Limiter (RCL) configuration. Stow boom over front.

  • Page 28: Normal Gauge Readings

    NORMAL GAUGE READINGS The RT-400 is equipped with two, full color touch screen displays. The main display is on the right side of the cab. This display is programmed to be the primary controller for the machine. It will monitor engine information directly off the SAE J1939 CAN bus network provided by the engine manufacturer.
  • Page 29 Any time there is a control system fault detected, there will be a pop-up window identifying what the fault is. The various diagnostics screens will help identify the issue that needs to be resolved. If there is an engine warning or engine stop signal,either the amber (warning) or red (stop) icons on the main display will be lit until resolved;...

  • Page 30: Rated Capacity Limiter

    RATED CAPACITY LIMITER (RCL) A rated capacity limiter (RCL) is installed on the crane to assist the operator in estimating loads and measuring load radii. Following, are some operating tips. Always be aware that the RCL can stop boom movement at capacity load conditions and in two-blocking conditions.

  • Page 31: Crane Capacity

    CRANE CAPACITY Before lifting loads, the operator must read the Crane Capacity Chart and adhere to the load capacities and radii of handling stated in the chart. The information provided on this chart is based on stability, structural strength and hydraulic capacity. To operate the crane safely, the operator must know the weight of the load and handling devices, and the radius of the lifting operation.
  • Page 32 NOTICE The outriggers should always be set before configuring the Rated Capacity Limiter. The system will check for outrigger position before the configuration can be confirmed. If the configuration does not match the outrigger position, the system will default the configuration to an on-rubber chart.
  • Page 33 CRANE CAPACITY CHART, DEFINITIONS, AND RULES: The load radius is the horizontal distance from the centerline of boom rotation (the center of the turntable when it is level), to the vertical load line with the load suspended. Because of deflections of the boom and carrier, the load radius increases when a load is hoisted from its resting place.
  • Page 34 2-20...
  • Page 35 2-21...
  • Page 36 2-22...
  • Page 37 CAUTION The ON OUTRIGGERS capacities of this crane are based on all outriggers being FULLY DEPLOYED to a FIRM surface with no load on the tires. The crane may tip at less than capacity loads if operated in the following manner: A.

  • Page 38: Sheave Block And Downhaul

    The capacity chart shows the approved hoist rope arrangements. The downhaul weight and sheave blocks supplied by Broderson are specially designed to operate the BMC Anti-Two- Block system. Other blocks or downhauls may bypass this system and create a dangerous condition.
  • Page 39 MULTI-PART LINE REEVING For loads above 10,000 pounds (4500kg) the sheave block must be used. The 4-part-line sheave block can be used for loads up to 40,000 pounds (18100 kg). The wedge socket should be pinned to the wedge socket anchor at the boom tip, as shown in the figure. The dead end of the rope in the wedge socket should be clamped, as shown in the figure below.

  • Page 40: Safety Devices

    SAFETY DEVICES There are certain safety devices on the RT-400 that are designed to maintain control of a load even if power or hydraulic line failure occurs. The operator should understand the function and operation of these devices so that a continual check on their performance can be made.
  • Page 41 EMERGENCY STOP SWITCH: A two-position push button switch located on the top, left-hand side of the dash panel is designed to stop the engine and shutdown the control system. Push switch in to disconnect power to the engine run circuit and control system circuit. Twist and pull to restore power. ARM FUNCTION BUTTON: On the 15-button panel there is an ARM button that must be engaged before the pilot joysticks will function.

  • Page 42: Optional Equipment

    OPTIONAL EQUIPMENT NOTICE Use appropriate ladders/steps to gain access to the boom tip and deck to perform this installation. INSTALLING AND STOWING BOOM EXTENSION: Set the outriggers. Raise and extend the boom about 30 feet (9 m) above the ground, paying out load line until hook is just above ground.
  • Page 43 17. Lay the load line back in the main boom tip sheaves and insert both retainer pins & cotters. 18. Replace all of the pins in their lugs for storage and insert their haipin cotters. 19. Install the sheave block on the load line, if desired. 20.

  • Page 44: Front Auxiliary Winch

    FRONT AUXILIARY WINCH: The front auxiliary winch is mounted behind the front bumper and is controlled from the operator compartment. The winch has 125’ (38 m) of ½” (12 mm)-6x36 EIP-RRL-IWRC wire rope with a 26,600- pound (118 kN) minimum breaking force and a 5-ton (4.5 metric ton) rated hook.

  • Page 45: Pintle Hooks

    PINTLE HOOKS: Available Pintle Hooks allow the crane to tow other disabled vehicles and trailors, and drag loads. 1. Observe the capacity ratings marked near the hook when towing. 2. Exceeding the capacities can damage the drivetrain. 3. Use slow and smooth motions to avoid shock loads or overrunning loads. Make sure vehicle being towed is occupied to steer and brake.

  • Page 46: Switch And Indicator Symbols

    SWITCH AND INDICATOR SYMBOLS ON BMC CRANES The following list shows the symbols used to label switches and indicators on BMC cranes. Most symbols are derived from the ISO 3767-1:1998(E) standard. Not all symbols will be included on your BMC crane. On/Start Windshield washer switch Off/Stop...
  • Page 47 Tire pressure Engine oil pressure low Lift point Engine coolant fill location Engine coolant Tie-down point temperature high Engine coolant low level Transmission oil fill location mark Engine air filter restriction Transmission oil pressure indicator Transmission oil Engine start temperature Brake fluid fill location Engine idle set Hydraulic oil low-level mark...

  • Page 48: Maintenance

    MAINTENANCE SAFETY RULES 1. Before doing maintenance, lower load, lower boom and retract boom, move to a safe place, shutdown engine, and remove key. Place warnings on the ignition switch and crane con- trols to prevent unauthorized starting or movement during maintenance. Disconnect battery using Battery Disconnect Switch mounted inside the engine compartment, and lockout if needed.
  • Page 49 15. If it is necessary to work on the boom in an unstowed condition, block it to prevent it from dropping unexpectedly. 16. Use a hoist when lifting components that weigh 50 pounds (22 kg) or more. Follow all hoist and rigging safety rules.

  • Page 50: New Unit Inspection And Test

    MAINTENANCE The Broderson RT-400 Rough Terrain Crane will perform better and longer if a program of in- spection, lubrication, adjustment, and general preventive maintenance is followed. We recom- mend the following schedule: NEW UNIT INSPECTION AND TEST The following inspection and test should be made before placing the unit on the job. This will ensure that no damage or loss of operating capability occurrs during shipment.

  • Page 51: Operator Inspection And Test

    OPERATOR INSPECTION AND TEST An operator, in the course of normal operation, should make certain observations, inspections, and tests to assure that the unit is ready to perform safely. Daily: 1. Check levels of engine oil, coolant, and transmission fluid. 2.
  • Page 52 Weekly: 1. Check tire pressure: 100 PSI (690kPa). 2. Check for loose wheel nuts. 475 foot-pounds (645N-m) torque required. 3. Check lights and turn signals. 4. Check power steering lines for damage. 5. Check brake lines for damage. 6. Check operation of horn. 7.

  • Page 53: Maintenance Checklist

    RT-400 MAINTENANCE CHECKLIST Refer to the component maintenance section of this manual and to the engine operator's manu- al for complete instructions. 50-HOUR INTERVAL: 1. 50-hour lubrication, as shown on lube schedule. 2. Inspect wire rope thoroughly. 3. Inspect for physical damage and leaks. 4.
  • Page 54 500-HOUR OR 6-MONTH INTERVAL: 1. 250-hour maintenance. 2. 50, 250 and 500-hour lubrication. 3. Check antifreeze for protection level and cleanliness. 4. Change hydraulic filter element, if not changed in the last 250 hours and inspect oil from el- ement. 5.
  • Page 55 Axle – Differential Housing – 5.4 gallons (20.5L), Hubs – 0.5 gallons (1.85L) Transmission – 5 gallons (19L), not including oil cooler and lines. Engine oil capacity – 10.5 quarts (10L) Engine cooling system – 14 quarts (13.2L), fill to bottom of fill neck in surge tank. RT-400-A LUBRICATION CHART...
  • Page 56 RT-400-A LUBRICATION CHART...
  • Page 57 RT-400-A LUBRICATION CHART 3-10...
  • Page 58 RT-400-A LUBRICATION CHART 3-11...
  • Page 59 RT-400 LUBRICATION SCHEDULE LUBRICATION INTERVALS LUBE SYMBOL ITEM DESCRIPTION 500 1000 MONTHS NOTES HOUR HOUR HOUR HOUR Anti-Two-Block Arm 2 Points Axle Differential Check @50, Change @12 Mo. Axle Kingpins 8 Zerks Axle Hubs Check @50, Change @12 Mo. Boom Extension Pins Wipe on.
  • Page 60 BOOM CHAIN LUBRICATION Put the crane on outriggers before beginning. The machine may tip in other configurations. Ex- tend the boom fully and lower to horizontal. Turn off the engine. Using appropriate ladders or steps, lubricate inner chains and chain sheaves through windows. There are grease fittings on chain sheave shafts both inside and outside the boom.
  • Page 61 RUB PAD ADJUSTMENT The rub pads on the sides of the boom may require adjustments as they wear. Adjustable rub pads are located at the tips of the outer boom, second stage, and third stage. Adjustable rub pads are also located at the bases of the second stage, third stage, and fourth stage. To determine if adjustment is required: 1.

  • Page 62: Brake System Maintenance

    ROTATION BEARING LUBRICATION There is one grease zerk remote-mounted in on the right side of the chassis, behind the fuel reservoir.This should be used to lubricate the bearing every 50 hours. Rotate the turntable at least one revolution while pumping grease into the zerk. Use about 8 ounces (230cc) of grease each time the bearing is lubricated.
  • Page 63 Brake Accumulators: Mounted under the floorboard of the operator’s compartment. The brake accumulators store hydraulic oil under pressure for use at the brake calipers. They are bladder- type accumulators, and require a pre-charge pressure in the gas bladder. The brake accumula- tor pre-charge pressure must be maintained on a monthly basis as follows: 1.
  • Page 64 TRANSMISSION MAINTENANCE The transmission is a three-speed-forward, three-speed-reverse, two range Dana 32000 series powershift transmission. The transmission is bolted directly to the flywheel housing of the en- gine and is connected by drive shafts to the front and rear axles. A torque converter transmits power from the flywheel to the transmission.
  • Page 65 Check the oil level weekly by removing the ADD plug on the transmission. The ADD plug is lo- cated near the left-hand side of the transmission, near the engine. Make sure the area around the plug is clean before removing. Check the oil level in NEUTRAL at idle speed, with the oil warm.
  • Page 66 TRANSMISSION FLUID CHANGE: Change the transmission fluid on a new machine after the first 20 hours. If the filter is changed every 200 hours, change the fluid every 600 hours. If the filter has been changed more fre- quently, change the fluid every other filter change. Use the following procedure: Operate the transmission long enough to warm the oil above 100F (40°C).
  • Page 67 TRANSMISSION HYDRAULIC SYSTEM: A pump in the transmission provides hydraulic power for operating the range shift solenoid and 4X4 disconnect solenoid. 3-20...
  • Page 68 NOTICE For transmission service or overhaul, which is beyond the scope of this manual, please call your Broderson dealer or the Broderson Service Department to have a Dana service representative contact you. If transmission feels like it is slipping, check the transmission oil level. High or low level can cause problems.
  • Page 69 If abnormal contamination is found or a problem cannot be diagnosed and fixed by the above steps, please call your Broderson dealer or the Broderson Service Department to have a Dana service representative contact you.
  • Page 70 WHEEL ALIGNMENT DRIVE AXLES--HUBS AND DIFFERENTIALS: Maintain fluid levels, as shown in the figures below. If necessary, add 80W-90 gear lube. Check every 50 hours and change every 12 months. 3-23...
  • Page 71 HOIST CABLE LUBRICATION The hoist cable is a wire rope and should be cleaned and lubricated every 50 hours of normal operation, and more frequently when used in dirty or corrosive environments. Whenever the rope is dirty or dry, it should be serviced. The rope should be cleaned with solvent and com- pressed air or solvent and rags.
  • Page 72 CAUTION For a correct assembly, it is necessary to have a minimum pre-load of 5% of the cable breaking force. The cable breaking force depends on the diameter and of the cable type, and it must be indicated on the cable certificate. 6.
  • Page 73 CONTROL AND HYDRAULIC SYSTEM The RT-400 control system is a pilot-actuated hydraulic system that is supplied with flow by two variable displacement pumps. The pumps are mounted on and driven by the transmission and supply flow on demand. The control joysticks are single axis levers mounted on each side of the operator seat.
  • Page 75 ELECTRICAL AND CONTROL SYSTEM The electrical and machine control system of the RT-400 is built utilizing J1939 CAN technology and consists of three major wiring harnesses that connect the machine’s sensors, modules, and devices together. Located in the operator’s compartment are two display units; the main machine display and the RCL display.
  • Page 76 13. Back-Up Alarm/ Outrigger Alarm – located on the rear plate of the chassis; contains two different tones of auible alarming: 1) when the machine is put into REVERSE, and 2) when the outriggers are being deployed Finally the below rotation harness connects to the engine for communication to and from the engine through the use of J1939 CAN communication protocol.
  • Page 77 CONTROL SYSTEM AND ENGINE FAULTS The control system of the RT-400 routinely checks itself and the rest of the system for potential problems at start-up and during operation. When a fault is detected within the control system or within the engine operation, an error code message will be displayed on the main display as well as the RCL display in the operator compartment.
  • Page 78 STEERING SYSTEM The steering system is also shown in the hydraulic schematic. The RT-400 steering system is a load-sensing, demand-type system that takes only as much flow as needed when steering, and directs the excess flow to the control valve for boom and outrigger functions. Oil from pump P2 goes into the priority valve at port P.
  • Page 79 CARE OF HYDRAULIC OIL The hydraulic system contains many highly pressurized, precision components. To protect the system, it is very important to keep the hydraulic oil clean, within proper temperature range for the oil specification, and to the proper fill level. The RT-400 is equipped with a suction strainer, a breather filter, a single 10-micron return-line filter and a 160-gallon tank (606L).
  • Page 80 HYDRAULIC OILS FOR RT-400 AMBIENT TEMP RANGE: -40° to 75°F -15° to 110°F 50° to 130°F (40° to 24°C) (26° to 43°C) (10° to 54°C) -40°F MAX -15°F MAX 0°F MAX POUR POINT: (-40°C) (-26°C) (-18°C) 140 MIN 95 to 100 95 to 100 VISCOSITY INDEX: 200 MAX...
  • Page 81 REMOVAL OF AIR FROM HYDRAULIC CIRCUITS To remove air from hydraulic circuits, perform the following steps: 1. Start the engine. 2. Raise and lower the boom, minimum five times. Ensure that the cylinder travels full stroke. 3. With the boom retracted and elevated to at least 65°, raise and lower the hook at least once with the hoist.
  • Page 82 HYDRAULIC SEALS W A R N I N G Do not check for hydraulic leaks with hands. If a mist of hydraulic oil is noticed around a line or component, use cardboard or other material to check for location of leak. High pressure fluid leaking from a small hole, can be almost invisible, yet have enough force to penetrate the skin.
  • Page 83 PRESSURE SETTINGS: The hydraulic system is divided into three pressure circuits, each having its own protective relief valve. The functions operated by the control valve sections require different pressures for dif- ferent functions. These are covered in sections below: 1. Hoist, Boom, & Swing Circuit -- 3000 PSI (207 bar) at full flow. 2.
  • Page 84 TELESCOPE CYLINDER HOLDING VALVE There is a single telescoping cylinder on the RT-400 and it has its own holding valve. This valve is designed to hold the boom in position, should loss of power or pressure line failure occur. The holding valve should be checked with the boom elevated to the maximum angle and the boom extended to a 10-foot (3.0m) load radius.
  • Page 85 BOOM SEQUENCE The RT-400 uses a single extension cylinder to extend all three moving stages. The cylinder is a multi-stage design, and uses a chain system to proportionally extend and retract the second, third, & fourth stages together. BOOM CHAIN ADJUSTMENT Study Illustrations 1,2, and 3 on the following page, to understand the chain adjustment proce- dure.
  • Page 86 BOOM CHAIN ADJUSTMENT 3-39...

  • Page 87: Engine Maintenance

    ENGINE MAINTENANCE Refer to the engine manual for additional engine maintenance. The air filter can be accessed outside of the engine compartment on the left-hand side of the machine. The oil dip stick can be accessed inside the engine compartment on the right-hand side of the machine. Access to the engine oil filter can be found inside the engine compartment on the right-side of the ma- chine.
  • Page 88 MECHANICAL ADJUSTMENTS FASTENERS: All fasteners on the RT-400 should be checked and retightened if required, as a part of the pre- ventive maintenance program. Particular attention should be given to the drive axle mounting bolts, pump mounting bolts, rotation bearing bolts, rotation gearbox bolts, winch bolts, bolts holding extension cylinder to 2nd stage and 3 stage.
  • Page 89 MANUAL OVERRIDE OF HYDRAULIC FUNCTIONS W A R N I N G The Rated Capacity Limiter, Anti-Two-Block System, outrigger alarm, and other systems will not function while using the manual overrides. Use manual overrides with extreme caution. In the event of a controls system fault, the following procedures may be used to lower a load, stow the boom, and retract the outriggers.
  • Page 90 3. To override the boom swing/slewing: a. The Chassis Control Valve is located within the chassis under the operator com- partment. If your unit has a front winch option, the other section on the lower control valve operates the front winch. Chassis Control Valve b.
  • Page 91 TORQUE DATA BOLT SAE GRADE SAE GRADE SAE GRADE GRADE 1 OR 2 MARKING MEDIUM CARBON MEDIUM CARBON MATERIAL LOW CARBON STEEL ALLOY STEEL Q & T Q & T MINIMUM TENSILE 64,000 PSI 120,000 PSI 150,000 PSI STRENGTH (441 MPa) (827 MPa) (1034 MPa) BOLT SIZE...

Table of Contents

Save PDF