I have a Manitou MT8044XT we had a hose blow out on the left rear level cylinder. We replaced the hose but now the machine won't level. The right front level cylinder does not operate at all. The left rear cylinder does operate. The fuses are good

2 comments:

Mr. Anderson

February 12, 2025

The right front level cylinder on a Manitou MT8044XT may not be operating after replacing the left rear level cylinder hose due to one of the following possible causes:

1. Air in the Hydraulic System – After replacing the hose, air may have entered the hydraulic lines, preventing proper operation. Bleeding the system may be necessary.

2. Hydraulic Fluid Leak or Low Fluid Level – If fluid leaked during the hose replacement and was not replenished, the system may not have sufficient pressure to operate the cylinder.

3. Contaminated or Blocked Hydraulic Lines – Debris or contamination from the hose replacement could be obstructing the flow of hydraulic fluid to the right front level cylinder.

4. Faulty Hydraulic Valve or Control Circuit – A malfunctioning valve or control mechanism could be preventing fluid from reaching the right front level cylinder.

5. Incorrect Hose Installation – If the new hose was not installed correctly or is restricting flow, it may affect the entire leveling system.

Checking the hydraulic fluid level, bleeding the system, inspecting for leaks, and verifying proper hose installation can help diagnose and resolve the issue.

This answer is automatically generated

Larry Wilson

February 12, 2025

@Mr. Anderson thanks for the reply. We added fluid level is good. I **** quite sure from the way the machine is acting it is air in the right front cylinder. I cracked all the hoses on the right front cylinder and got air from the upper inside hose but none on the others. I could not find anywhere else to bleed the system. Thanks again

Summary of Contents for Manitou MT6642XT

Page 1 MT6642XT MT8044XT MT10044XT MT10055XT MT12042XT Telescopic Handler Operator/Service Manual Catalog 50960025 Revision C MT6642XT beginning with S/N 27251 MT8044XT beginning with S/N 28251 MT10044XT beginning with S/N 80151 MT10055XT beginning with S/N 80151 MT12042XT beginning with S/N 38101...
Page 2 Indicator and Operation Symbols Read Operator’s Parking Brake Brake Failure Safety Alert Turn Signals Hazard Flasher Manual Ignition Off Ignition ON Engine Start Hydraulic Oil Horn Engine Oil Pressure Volume Full Volume Half Full Volume Empty Battery Fuel Transmission Temperature Engine Coolant Starting Aid Wiper/Washer...
Page 3 MT6642XT beginning with S/N 27251 MT8044XT beginning with S/N 28251 MT10044XT beginning with S/N 80151 MT10055XT beginning with S/N 80151 MT12042XT beginning with S/N 38101 For parts orders contact your Manitou Americas Dealer or call: Factory Parts Department (262) 334-6653. Website: www.manitou.com / www.mnadealers.com...
Page 4 Wash hands after handling battery. IDENTIFICATION INFORMATION Write your Manitou Americas Inc. Telescopic Handler model and serial numbers below. Refer to these numbers when inquiring about parts or service from your Manitou Americas Inc. dealer. MODEL NO. SERIAL NO.
Page 5 Table of Contents Chapter Description Page Indicator and Operation Symbols ....Inside Front Cover Introduction ..........2 Specifications .
Page 6 Record the serial number in the space provided on the previous page, as a handy record for quick reference. Please be aware that Manitou Americas Inc. reserves the right to make changes or improvements in the design or construction of any part without incurring the obligation to install such changes on any unit previously delivered.
Page 7 Identification Operator’s Lift Rear Boom Station Cylinder Access Stabilizer Cylinder Boom Angle Indicator Quick-attach Tilt System Cylinder Rear Lights and Backup Alarm Access Hydraulic Frame Leveling Extend Cylinder Reservoir Cylinder Telescopic (under cover) Lift Boom Slave Cylinder Access Cylinder Covers Auxiliary Hydraulics Fuel Tank...
Page 8 Chapter 2 SPECIFICATIONS Lifting Performance General Dimensions Instrumentation Based on standard machine equipped with Maximum lift capacity: Gauges: MT6642: 6600 lbs. (2994 kg) listed tires, 48” masonry carriage and 48” pal- Fuel level, hourmeter, coolant temperature, MT8044: 8000 lbs. (3629 kg) let forks.
Page 9 Service Capacities Front axle: Drive/steer, limited-slip differ- ential with internal SAHR parking brake Cooling System: Overall ratio: 26.21:1 21.2 qts. (20.1 L), 50/50 mixture Rear axle: Drive/steer, open differential Anti-freeze protection: -34°F (-31°C) Overall ratio: 26.21:1 Pressure cap:18 psi (124 kPa) Engine Fuel tank: 47 gallons (178 L) Turbocharged aspiration:...
Page 10 Chapter 3 CHECKLISTS PRE-DELIVERY I acknowledge that the pre-delivery procedures were per- formed on this unit as outlined above. The following Checklist is an important reminder of the inspections that MUST be made before delivering the Telescopic Handler to the customer. Check off each item Dealership’s Name after the prescribed action is taken.
Page 11 Chapter 3 CHECKLISTS PRE-DELIVERY I acknowledge that the pre-delivery procedures were per- formed on this unit as outlined above. The following Checklist is an important reminder of the inspections that MUST be made before delivering the Telescopic Handler to the customer. Check off each item Dealership’s Name after the prescribed action is taken.
Page 12 INTENTIONALLY BLANK (To be removed as Dealer’s file copy) 50960025/CP0514 PRINTED IN U.S.A.
Page 13 Chapter 4 SAFETY The above Safety Alert Symbol means ATTENTION! Manitou Americas ALWAYS takes the operator’s safe- ALWAYS BE ALERT! YOUR SAFETY IS ty into consideration when designing its machinery, INVOLVED! It stresses an attitude of “safety aware- and guards exposed moving parts for his/her protec- ness”...
Page 14 SAFETY Additional Safety Reminders WARNING Ü User/operator safety practices, as established by industry standards, are included in this Operator’s U.S. OSHA regulations require employers in Manual and intended to promote safe operation of general industry and the construction, ship- the machine. These guidelines do not, of course, yard and cargo-handling industries (excepting preclude the use of good judgment, care and com- agricultural operations) to ensure that forklift...
Page 15 SAFETY Ü the rear before backing. ALWAYS wear appropriate personal protective equipment for the job and working conditions. Ü DO NOT raise or drop a loaded fork or bucket Hard hats, goggles, protective shoes, gloves, suddenly. Abrupt movements under load can reflector-type vests, respirators and ear protection cause serious instability.
Page 16 SAFETY Ü When a forklift / telescopic handler is config- DO NOT turn quickly while traveling on a slope or operate the machine beyond the grade and ured and used for hoisting, the employer must slope limits noted in the Operation and ensure that: Adjustments chapter of the Operator’s Manual.
Page 17 SAFETY Note: Refer to the full text of the OSHA crane Servicing Safety Reminders regulation (29 CFR Part 1926, Subpart CC) for Ü ALWAYS be aware of and avoid pinch point areas a detailed description of the regulatory on the machine, such as wheels-to-frame, cylin- requirements.
Page 18 WARNING Ü To ensure continued safe operation, replace dam- aged or worn-out parts with genuine Manitou ser- The machine must not be used to lift or carry vice parts before using this equipment. personnel, or be fitted with any form of per-...
Page 19 SAFETY 11. Be sure that any required restraining means (rail- The Mandatory Work Platform Safety Rules must be ings, chains, harnesses, etc.) are in place and adhered to at all times while elevating personnel. properly used. These rules are based on ANSI/ITSDF Standard B56.6-2005, “Safety Standard for Rough Terrain 12.
Page 20 SAFETY 24. The platform must be fully lowered for personnel to enter and exit. Personnel must not climb on Electrical Connection any part of the forklift in attempting to enter and exit. 25. Any harness, body belt, lanyard, or deceleration Remote device that has sustained permanent deformation Shutdown...
Page 21 SAFETY Floor dimensions, which shall not exceed two have an attachment point provided overhead for times the load center distance of 24 inches (610 freedom of movement, and its length is to limit mm) listed on the forklift nameplate, measured free-fall to 5 feet (1500 mm) measured from the parallel to the longitudinal center plane of the point of attachment to the operator.
Page 22 SAFETY 808037 808031 808033 808026 808029 808027 808030 808038 50380987 808033 50960025/CP0514 PRINTED IN U.S.A.
Page 23 SAFETY 808031 808038 808037 808027 808033 808029 808030 50380987 PRINTED IN U.S.A. 50960025/CP0514...
Page 24 SAFETY 51200535 808034 808036 808033 808033 808033 808033 808032 808031 808035 808035 50960025/CP0514 PRINTED IN U.S.A.
Page 25 SAFETY 51200535 808031 808032 808036 808033 808034 808035 PRINTED IN U.S.A. 50960025/CP0514...
Page 26 SAFETY PWP Safety Decals 808041 808040 808039 808039 808042 808041 808039 808040 808042 50960025/CP0514 PRINTED IN U.S.A.
Page 27 Telescopic Handler BEFORE operating it. special operating procedures. Know how to stop the machine operation BEFORE operating it. This Manitou Americas machine is designed and intended to be used WARNING ONLY with a Manitou Americas attachment...
Page 28 DASH PANEL AREA INSTRUMENT AND SWITCH PANEL Located to the right of the steering wheel, this panel contains the instrument gauges, indicator lamps and function switches. Ignition Switch, Start and Horn Button A1 - Key Switch OFF: When the key is vertical in the keyswitch, power from the battery is disconnect- ed to the control and instrument panel electrical circuits.
Page 29 A2 - Engine Coolant Temperature: Press button “B” IMPORTANT: If this lamp comes on during nor- until “TEMP” is displayed. It indicates the temperature mal operation, a problem may exist in the trans- of the engine coolant. Under normal conditions, this mission oil system.
Page 30 This combination will lead to a illuminated at the same time. This image is only to “Service Only” soot condition, contact your authorized Manitou Americas dealer. illustrate the indicators you may see during oper- ation. C - Engine Emergency Override Switch: The lamp...
Page 31 Top Row Switches NOTE: This lamp will flash on and off, indicating that the system is not yet fully functional, until the Switches have graphic symbols to indicate function brakes are held on for three or more seconds. and effect. The following descriptions start with the first switch on the left.
Page 32 G - Hazard: This switch can be activated to make the Fan Speed: This knob is located below the tempera- tail lights flash on and off in case the machine is stalled ture control knob. Rotating the knob clockwise will or temporarily stopped in a traffic area on the road or increase the fan speed for increased air circulation.
Page 33 Speed Range - MT6642 and MT8044: Twisting the Seat Positioning: The seat is mounted on rails for for- lever end clockwise or counter-clockwise will change ward and rearward reposi- the transmission speed between low, medium and trav- tioning, for comfort and to el ranges.
Page 34 WARNING following the MANDATORY SAFETY SHUT- DOWN PROCEDURE (page 9). DO NOT attempt repairs. Call your Manitou Americas DO NOT level the frame with the boom raised dealer for assistance. or extended. Only level the frame while...
Page 35 the function speed of both the attachment tilt and aux- WARNING iliary hydraulics. To extend the boom, move the joystick right; to retract For maximum machine stability, never lower the boom, move the joystick to the left. To raise the the outriggers so that the tires come com- boom, move the joystick rearward;...
Page 36 Attachment and Auxilliary Hydraulics Pilot-Pressure Apply Valves AUXILIARY HYDRAULICS ATTACHMENT TILT PILOT-PRESSURE APPLY PILOT-PRESSURE APPLY VALVE VALVE LOCKING KNOBS LOCKING KNOBS AUXILIARY L71378 HYDRAULICS SPEED DECAL ATTACHMENT TILT ATTACHMENT TILT CONTROL KNOBS FRONT L71378 REARWARD SPEED FORWARD SPEED DECAL CONTROL KNOB CONTROL KNOB Frame Level Control: This control is located to the rear of the tri-function joystick.
Page 37 Transmission Dipstick Hydraulic Oil Level Sight Gauge Hydraulic Oil Hydraulic Fill Cap Test Ports Air Cleaner Restriction Indicator: Located in the rubber elbow connector at the rear of the air cleaner, it Engine Oil Level: Dipstick is located on the right side indicates when the air cleaner needs service.
Page 38 E. 20 AMP relay: Lights F. 20 AMP relay: Top Wiper ATTACHMENT TOOLS Manitou Americas offers a versatile range of attach- ment tools to meet various lifting and material-han- Fuse and dling applications. Contact your Manitou Americas Relay Access dealer for specifications and ordering information.
Page 39 Chapter 6 OPERATION AND ADJUSTMENTS GENERAL INFORMATION During the first 20 hours, avoid prolonged periods of engine idling or sustained maximum load operation. If engine will idle longer that 5 minutes, stop the engine. CAUTION Consult the Lubrication chapter for the type and grade of oil to use.
Page 40 Pre-Start Walk-Around Inspection Illustration PRE-START WALK-AROUND INSPECTION Any needed repairs or service noted during the inspec- tion must be performed by a qualified service techni- PROCEDURE cian before operating the machine. Refer to the following illustration and checklist to per- form the inspection.
Page 41 Pre-Start Walk-Around Inspection Checklist o14. Stabilizer Switch: Properly secured; no visible dam- Note the condition of safety decals during the walk-around inspection. Replace missing or illegible safety decals. age; no loose or disconnected wires. o15. Boom Pivot Assembly: Properly secured; no visible Attachment Tool: Check for broken, missing or damaged parts.
Page 42 BEFORE STARTING ENGINE Check that indicators are in normal condition. Check that there are no fuel, oil or engine coolant Before mounting the operator’s compartment, walk leaks, and no abnormal noises or vibrations. completely around the machine to be sure no one is under, on, or close to it.
Page 43 is released before the engine starts, turn the key Place the travel lever in Forward or Reverse and select switch “OFF” and repeat the procedure. a speed range. Switch off the parking brake and move ahead slowly, while testing the steering and brakes. Follow steps 5 -7 as listed in “Starting The Stop and operate all boom, attachment tool functions Engine”.
Page 44 This service will need to be performed by a authorized Manitou Americas deal- At the High Coolant Temperature SHUTDOWN set- point, the lamp in the engine override switch and the...
Page 45 specific conditions. During this process the engine cleaning process can be canceled at any time during the speed will be controlled by the ECU. The machine process. must remain parked during this process. Avoid disabling the cleaning process unless absolutely necessary.
Page 46 Raise the boom slightly and extend it two to three The Telescopic Handler boom nose will accept Quick- feet (600 to 900 mm) for better visibility. Lower attach System Manitou Americas attachment tools. The the boom until the attachment tool is approxi- Quick-attach System has a quick-release hookup and mately 12”...
Page 47 Modifications, alterations to, or use of attach- dismounting. ment tools NOT authorized by Manitou Americas (or the manufacturer) in writing can NEVER operate the machine with safety void warranty and cause machine damage guards or covers removed.
Page 48 The amount of forward and rearward tilt to be used is LEVEL, as indicated by the level indicator on the governed by the application. Although use of maxi- ROPS/FOPS cross member. The attachment tool mum rearward tilt is allowable under certain condi- MUST be maintained at the “carry”...
Page 49 DO NOT move railroad cars and trailers with the Safety Hand Signals Continued Telescopic Handler. DO NOT use the boom and attachment for leverage to push the machine out of mud. IMPORTANT: DO NOT lower boom at high engine speed when attachment tool is at maxi- mum rearward tilt.
Page 50 Turning corners too fast can tip the machine, During placement, the operator should observe when the boom extension mark number “4” on the boom is or cause a load to slide off the attachment. Sudden slowing or stopping of the machine visible and stop further extension.
Page 51 For elevated or overhead placement, bring the machine WARNING as close as possible to the landing point, and then: Level the machine BEFORE raising the load. Use Operating conditions reduce extreme caution for high placement. Be sure per- machine’s safe operating capacity. Exceeding sonnel are clear of the area where the load or the the capacity when raising or extending the machine could fall or tip.
Page 52 Rigging should comply with OSHA regulation Elevated Suspended Load Placement §1910.184, “Slings,” or §1926.251, “Rigging Bring the telehandler as close as possible to the equipment for material handling.” landing point. Be sure the rigging equipment is clear of any part Level the telehandler BEFORE raising the load.
Page 53 After the forks are fully engaged in the PWP, secure the PWP to the forks. This can be accom- Electrical Connection plished by means of a retaining pin behind the heel of the forks, as shown. Remote Shutdown Switch Remote Shutdown Switch Retaining with Coiled Wire Connector For machines with a 55-foot boom: The remote...
Page 54 NOT attempt to bring down the boom or make Pressing the red button will disengage the boom repairs. Call your Manitou Americas dealer control joystick and stop all platform movement. immediately. The remote shutdown switch box is a wireless...
Page 55 A jib or truss boom should ONLY be used to lift and place loads when the machine is sta- tionary and the frame is level. Transporting suspended loads must ALWAYS be done slow- ly and cautiously, with the boom and load as low as possible.
Page 56 Slowly (at the lowest engine speed possible) and carefully drive the machine down the ramps. THEFT DETERRENTS Manitou Americas has recorded all component part numbers and serial numbers. Users should take as many of the following actions as possible to discour-...
Page 57 Use Multi-ATF Dexron ® III or equivalent Rear Planetary: 1.90 qts. each (1.80 L) Capacity: All Models 13.75 qts. (12.9 L) Capacity: MT6642XT and MT8044XT Hydraulic System Reservoir Front and Rear Differential: 15.8 qts. (15.0 L) Use Mobil DTE 15M, or an equivalent that Front and Rear Planetary: 2.6 qts.
Page 58 --- CHASSIS AREA --- FILTER REFERENCE CHART Brake pedal linkage TYPE PART NUMBER 10. Wheel spindle pins (4 per axle) Engine Oil 808000 11. Stabilizer cylinder pivot pins (3) Engine Fuel Primary 50220174 12. Axle pivot pins (2 per axle) Secondary 50220173 13.
Page 59 Grease Fittings Locations PRINTED IN U.S.A. 50960025/CP0514...
Page 60 BEFORE resuming machine operation. The following areas of internal components service replacement and operating adjustments should only be by (or under the direction of) an authorized Manitou NOTE: All service routines, with the exception of Americas Telescopic Handler dealer. those described under the “Dealer Services”...
Page 61 Manitou access to components located inside the superstructure, Americas dealer or Manitou Americas Service under shields, hoods and covers. The chart on this page Department. Failure to do so may result in notes the components accessed in each particular area.
Page 62 Replace any cracked or damaged parts. hydraulic, battery or fuel systems; all contain Use only genuine Manitou Americas parts for service. highly flammable liquids or explosive gases, which can cause an explosion or fire if ignited.
Page 63 CHECKING FUEL TANK LEVEL CHECKING ENGINE OIL LEVEL The fuel level is shown by the fuel level gauge on the With the machine on level ground, and the engine instrument panel. After operation each day, the fuel stopped for ten minutes or more, slide open the right tank should be filled to prevent water from condensing side engine panel and remove the engine dipstick.
Page 64 CHECKING TRANSMISSION OIL LEVEL Lubricate both the tire beads and rim flanges with a soap solution. DO NOT use The machine must be on level ground. With the engine oil or grease. and transmission at operating temperature, parking DO NOT place fingers on the tire bead or brake on, transmission in neutral and engine speed at rim during inflation.
Page 65 NOT USE the machine until the cause has switch to “Dis-engaged.” been corrected. Contact your dealer (or The joystick control should now be disabled, so Manitou Americas) for service information and that boom raise/lower and extend/retract will no parts. longer function.
Page 66 Start the engine and apply the service brakes. The PWP switch lamp and the parking brake switch lamp should go off after approximately three seconds of brake pedal application. If PWP System fails to perform properly, troubleshoot using the chart on page 71. Contact your dealer for ser- vice information and parts.
Page 67 Firmly grasp the retaining ring (A) and rotate it Fuel Bleeding Procedure clockwise 1/4 turn (when viewed from the top). When the fuel filter is removed and replaced, or if the Remove the ring with filter element (B or E). engine runs out of fuel, air must be bled from the sys- tem.
Page 68 Open Crankcase Vent Engine Oil Filter IMPORTANT: Filtration of oils is critical to proper CHECKING THE BATTERY lubrication. Always change the filter with every oil change. The battery furnished in the machine is a 12-volt, wet- cell battery. 3. Apply a thin coat of clean engine oil to The top of the battery must always be kept clean.
Page 69 4. To neutralize acid spilled on the floor, use Connect one end of the (red) positive (+) jumper cable to the positive (+) battery terminal on the one of the following mixtures: disabled machine first. DO NOT allow the posi- a.
Page 70 Inspect the leaf chains for wear. Run the boom out Two Front One Rear Boom Chains slowly to inspect. Conditions to look for include: Boom Chain cracked or broken plates, protruding or turned pins, and excessive wear. With a steel tape, measure 16 links of the strand that flexes over the sheaves.
Page 71 If the boom starts to chatter under load, grease the slide Remove the cover to gain access to the condenser pads and wipe off the excess grease. Maintain a clear- (2). ance of 1/16” between the top or side slide pads and the Clean any large debris that may have collect on boom.
Page 72 CHANGING HYDRAULIC RETURN Service Every 1000 Hours or Yearly FILTER ELEMENT NOTE: Perform all other service requirements WARNING up to this point, as well as the following: CHANGING TRANSMISSION OIL AND When servicing the hydraulic system, lower FILTER the boom to the ground. Operate the machine long enough to warm the trans- mission oil to 150°F-200°F (65°C-93°C).
Page 73 NOTE: Before replacing the filter element(s), Insert the element(s), making sure that they are seated properly. push the reset button on the indicator. Start the engine and run at full throttle. If the indicator does Secure the end cap to the housing with the three not turn red, do not replace the element(s).
Page 74 Plug a 3000 psi (207 bar) oil-or liquid-filled gauge into shows wear or cuts, it should be replaced. Order a the test port labeled “MP.” Fully retract the boom over replacement belt from your Manitou Americas dealer. the relief valve. The gauge should read 3000 psi (207 bar).
Page 75 CHANGING HYDRAULIC RESERVOIR WARNING OIL AND STRAINER Clean all dirt and debris from around the top of the NEVER use your hands to search for hydraulic reservoir, especially around the access cover. Refer to fluid leaks. Escaping hydraulic oil under pres- illustration and use the following procedure: sure can have sufficient force to penetrate the skin.
Page 76 This professional exhaust fil- bricate the internal parts. Run the engine until the ter service must be performed by an authorized battery is recharged and then shut it off. Manitou Americas dealer. STORAGE After Storage After removing the machine from storage and...
Page 77 PWP System switch. the end of the boom. PWP System angle sensor is Contact your Manitou Americas unplugged or faulty. dealer for assistance. PWP System mode lamp flash- es when switch is turned “OFF.”...
Page 78 Chapter 9 DECAL LOCATIONS DECAL KITS GENERAL INFORMATION 51200582 MT6642XT Telescopic Handler with PWP 51200583 MT6642XT Telescopic Handler without PWP CAUTION 51200584 MT8044XT Telescopic Handler with PWP 51200585 MT8044XT Telescopic Handler without PWP ALWAYS read and follow the safety precau- 51200586 MT10044XT Telescopic Handler with PWP tions on decals.
Page 79 808036 808036 WARNING - PINCH POINT 808033 808033 808033 808033 808033 WARNING - JUMP START 808034 808034 808034 808034 808034 MANITOU LOGO, SMALL 804768 804768 804768 804768 804768 QUICK-ATTACH DIAGRAM 808046 808046 808046 808046 808046 MANITOU LOGO, LARGE 806320 806320...
Page 80 806319 806319 HYDRAULIC OIL FILL 808057 808057 808057 808057 808057 WARNING - NO RIDERS 808035 808035 808035 808035 808035 MANITOU LOGO, SMALL 103275 103275 103275 103275 103275 DANGER-PERSONNEL INJURY (w/o PWP) 808031 808031 808031 808031 808031 QUICK-ATTACH UNLOCKED 808038 808038...
Page 81 Dual Joystick Control Tri-function Joystick Control DECAL LOCATIONS - OPERATOR STATION REF. DESCRIPTION MT6642 MT8044 MT10044 MT10055 MT12042 TILT HAZZARD/GENERAL OPERATOR 808027 808027 808027 808027 808027 CARRY LOAD LOW 808026 808026 808026 808026 808026 F-N-R SHIFT 808059 808059 808059 808059 808059 MADE IN USA 808060...
Page 82 DECAL LOCATIONS - PWP EQUIPPED UNITS REF. DESCRIPTION MT6642 MT8044 MT10044 MT10055 MT12042 PERSONNEL LIFT 808039 808039 808039 808039 808039 WORK PLATFORM RULES 808040 808040 808040 808040 808040 PERSONNEL LIFT SAFETY RULES 808041 808041 808041 808041 808041 PWP LOAD CHART 808014 808007 50380399...
Page 83 Chapter 10 MAINTENANCE This Maintenance Interval Chart was developed to match the Service and Storage chapter of this manual. Detailed information on each Service Procedure is in the Service and Storage chapter. A Maintenance Log follows the Maintenance Interval Chart for recording the maintenance procedures performed. Recording the 10 Hour (or Daily) service intervals is impractical and is therefore not recommended.
Page 84 MAINTENANCE INTERVAL CHART (CONT.) SERVICE PROCEDURE Every 250 Every 1000 Every 2000 Service As Hours (or Hours (or Hours (or Required Quarterly) Yearly) Two Years) Check Open Crankcase Vent Checking Battery Checking and Torqueing Boom Leaf Chains Checking Boom Slide Pads Wear and Clearance Clean Air Conditioning Condenser Clean/Change Cab Ventilation Filter Changing Transmission Oil and Filter...
Page 85 MAINTENANCE LOG Date Hours Service Procedure PRINTED IN U.S.A. 50960025/CP0514...
Page 86 MAINTENANCE LOG Date Hours Service Procedure 50960025/CP0514 PRINTED IN U.S.A.
Page 87 MAINTENANCE LOG Date Hours Service Procedure PRINTED IN U.S.A. 50960025/CP0514...
Page 88 ENGINE DIAGNOSTIC TROUBLE CODES (DTCs) Engine diagnostic trouble codes are displayed in the Always contact your servicing engine dealer for help instrument display panel. in correcting the diagnostic trouble codes that are dis- played for the engine. Stored and active diagnostic trouble codes are dis- played as a two-part code: Suspect Parameter Number The fault code listing in the following tables are in (SPN) and Failure Mode Identifier (FMI), as shown on...
Page 89 SPN Name SPN Name Code Code 000652 Injector #2 002798 Injector High Voltage Supply #2 000653 Injector #3 003246 DPF Outlet Temperature 000654 Injector #4 003251 DPF Differential Pressure Signal 000676 Cold Start Relay Output Signal 003464 Air Throttle Actuator Drive Circuit 000729 Inlet Air Heater Signal 003471...
Page 90 FAILURE MODE IDENTIFIER (FMI) CODES FMI Name FMI Name Code Code Extremely High Activated Extremely Low Error Invalid Fault Out Of Range High Incorrect Message Out Of Range Low Slightly High High Resistance Moderately High Low Resistance Slightly Low Mismatch Moderately Low Signal Missing Communication Error...
Page 91 Hydraulic Schematic for Two-Joystick Control without PWP PRINTED IN U.S.A. 50960025/CP0913...
Page 92 Hydraulic Schematic for Two-Joystick Control with PWP 50960025/CP0913 PRINTED IN U.S.A.
Page 93 Hydraulic Schematic for Tri-Function Joystick without PWP PRINTED IN U.S.A. 50960025/CP0913...
Page 94 Hydraulic Schematic for Tri-Function Joystick with PWP 50960025/CP0913 PRINTED IN U.S.A.
Page 95 Electrical Schematic with Radio Remote PRINTED IN U.S.A. 50960025/CP0913...
Page 96 Electrical Schematic without Radio Remote 50960025/CP0913 PRINTED IN U.S.A.
Page 97 INTENTIONALLY BLANK PRINTED IN U.S.A. 50960025/CP0514...
Page 98 Load Zone Charts MT6642XT Decal 808019 Decal 808017 Standard Carriage 1.3-Cu.-Yd. Bucket Decal 808018 Decal 808016 Rotating Carriage 12-Ft. Truss Boom 50960025/CP0514 PRINTED IN U.S.A.
Page 99 Load Zone Charts MT6642XT Decal 808015 Decal 50380927 5-Ft. Winch Boom 90° Swing Carriage Decal 808014 PRINTED IN U.S.A. 50960025/CP0514...
Page 100 Load Zone Charts MT8044XT Decal 808013 Decal 808011 Standard Carriage 1.3-Cu.-Yd. Bucket Decal 808012 Decal 808010 Rotating Carriage 15-Ft. Truss Boom 50960025/CP0514 PRINTED IN U.S.A.
Page 101 Load Zone Charts MT8044XT Decal 808009 Decal 808008 5-Ft. Winch Boom 90° Swing Carriage Decal 808007 PRINTED IN U.S.A. 50960025/CP0514...
Page 102 Load Zone Charts MT10044XT Standard Carriage 1.3-Cu.-Yd. Bucket Decal 50380393 Decal 50380397 Rotating Carriage 15-Ft. Truss Boom Decal 50380398 Decal 50380400 50960025/CP0514 PRINTED IN U.S.A.
Page 103 Load Zone Charts MT10044XT 90° Swing Carriage Winch Boom Decal 50380394 Decal 50380396 180° Swing Carriage Work Platform Decal 50380395 Decal 50380399 PRINTED IN U.S.A. 50960025/CP0514...
Page 104 Load Zone Charts MT12042XT Rotate Carriage Standard Carriage Decal 50380403 Decal 50380401 90° Swing Carriage 1.3-Cu.-Yd. Bucket Decal 50380402 Decal 50380404 50960025/CP0514 PRINTED IN U.S.A.
Page 105 Load Zone Charts MT12042XT 15-Ft. Truss Boom Winch Decal 50380407 Decal 50380405 180° Swing Carriage Work Platform Decal 50380408 Decal 50380406 PRINTED IN U.S.A. 50960025/CP0514...
Page 106 Load Zone Charts MT10055XT Standard Carriage - Outriggers Down Standard Carriage - Outriggers Up Decal 50380036 Decal 50380035 Rotate Carriage - Outriggers Up Rotate Carriage - Outriggers Down Decal 50380037 Decal 50380038 50960025/CP0514 PRINTED IN U.S.A.
Page 107 Load Zone Charts MT10055XT 1.3-Cu.-Yd. Bucket Swing Carriage Decal 50380042 Decal 50380039 Winch 15-Ft. Truss Boom Decal 50380040 Decal 50380041 PRINTED IN U.S.A. 50960025/CP0514...
Page 108 Load Zone Charts MT10055XT Work Platform Decal 50380043 50960025/CP0514 PRINTED IN U.S.A.
Page 109 Torque Specifications Use these torque values when tightening Manitou Americas hardware (excluding: locknuts and self-tapping, thread-forming and metal screws) unless otherwise specified. Grade 2 Grade 5 Grade 8 Unified National Thread Lubed Lubed Lubed 8-32 8-36 10-24 10-32 1/4-20 1/4-28...
Page 110 Index Controls Dash ........24 Access To Components Chart .
Page 111 Exhaust Filter Cleaning System ....40 Hydraulic Maintenance Automatic Exhaust Filter Cleaning ....40 Oil Filters, replacing .
Page 112 Shields ........23 Side View Mirror .
Page 113 Liability for incidental or consequential damages of any type, including, but not limited to lost profits or expenses of acquiring replacement equipment. No agent, employee or representative of Manitou has any authority to bind Manitou to any war- ranty except as specifically set forth herein.

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Manitou MT6642XT Operators & Service Manual

4 Safety

Indicators and Controls

Operation and Adjustments

7 Lubrication

Service and Storage

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Summary of Contents for Manitou MT6642XT

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Manitou MT6642XT Operators & Service Manual

4 Safety

Indicators and Controls

Operation and Adjustments

7 Lubrication

Service and Storage

Quick Links

Need help?

Questions and answers

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Summary of Contents for Manitou MT6642XT

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