Cooling, electrical, powershift transmission, axles, brakes, steering, hydraulics, mast and attachments: the Mitsubishi FD70E service manual PDF (publication 99709-71100) covers each system on this forklift truck from start to finish over 397 pages. Hydraulic schematics trace oil from the pump and control valve out to the lift and tilt cylinders, and a wiring diagram maps the electrical circuits. Powershift transmission work fills one of the largest chapters in the book, with its own troubleshooting section. If a transmission solenoid acts up, the troubleshooting charts give you the cutoffs: 120 mA or lower means an open circuit, and 2.4 A or higher means a short. Fill the cooling system with 13.5 L (3.57 U.S. gal.) and set fan belt deflection to 12 mm (0.47 in.) under 98 N of force. A guessed mast bolt torque can drop a load. Chapter bookmarks and a searchable text layer take you straight to the standard bolt torque table in seconds.
What's Inside This Mitsubishi FD70E Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 1-16 | Model View, Truck Models Covered, Serial Number Locations, Main Specifications, Chassis and Mast Model Identification, Dimensions |
| Cooling System | 17-22 | Specifications, Structure, Inspection and Adjustment, Removing Fan Belt, Inspection of Fan Belt, Fan Belt Tension Adjustment |
| Electrical System | 23-77 | Major Components, Disassembly and Reassembly, Batteries and Charging, Location of Components, LC (Lever Control System), Electrical Wiring Diagram |
| Power Train | 78-92 | Specifications, Removal and Installation, Installation, Reduction Ratio, Removal and Installation of Engine and Transmission Unit, Draining Oil and Coolant, Removing Overhead Guard and Covers |
| Powershift Transmissions | 93-155 | Structure, Disassembly and Reassembly, Troubleshooting, Torque Converter, Control Valve, Main Regulator Valve, Torque Converter Drive Transmission Hydraulic System Schematic |
| Front Axle and Reduction Differential | 156-185 | Suggestions for Removal and Installation, Disassembly and Reassembly, Front Wheels (Tires) |
| Rear Axle | 186-205 | Removal and Installation, Disassembly and Reassembly, Troubleshooting, Power Cylinder, Rear Wheel (Tire) |
| Brake System | 206-240 | Disassembly and Reassembly, Adjustment and Testing, Troubleshooting, Wheel Brake, Brake Booster, Master Cylinder, Parking Brake |
| Steering System | 241-259 | Structure and Functions, Disassembly and Reassembly, Troubleshooting, Steering Hydraulic System, Steering Gear, Tilt Steering Assembly |
| Hydraulic System | 260-308 | Structure and Functions, Removal and Installation, Disassembly and Reassembly, Hydraulic Tank, Hydraulic Pump (Gear Pump), Control Valve, Lift Cylinder, Tilt Cylinder |
| Masts and Forks | 309-352 | Disassembly and Reassembly, Readjust, Troubleshooting, Simplex Mast, Triplex Mast, Operation of Triplex Mast |
| Fork Positioner | 353-365 | Suggestions for Removal and Installation, Disassembly and Reassembly, Troubleshooting, Applicable Attachment Models, Inspection and Repair |
| Side Shifter | 366-378 | Suggestions for Removal and Installation, Disassembly and Reassembly, Troubleshooting, Removing Forks, Removing Side Shifter Assembly, Installation |
| Service Data | 379-397 | Inspection Point, Tightening Torque of Standard Bolts, Periodic Replacement Parts |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Clearance between cylinder body and piston | 0.020 to 0.105 mm (0.00079 to 0.00413 in.) | p. 6 |
| Total coolant capacity | 13.5 L (3.57 U.S. gal.) | p. 18 |
| Fan belt deflection | 12 mm (0.47 in.) | p. 21 |
| Solenoid open circuit threshold | 120 mA or lower | p. 71 |
| Solenoid short circuit threshold | 2.4 A or higher | p. 71 |
| Tilt solenoid open circuit threshold | 120 mA or lower | p. 71 |
| Tilt solenoid short circuit threshold | 2.4 A or higher | p. 71 |
| Free length of solenoid spring 1 | 87.5 mm (3.44 in.) | p. 133 |
| Free length of solenoid spring 1 (Repair or service limit) | 85 mm (3.35 in.) | p. 133 |
| Oil Pump Side clearance | 0.040 to 0.078 mm (0.0028 to 0.0043 in.) | p. 148 |
| Oil Pump Side clearance repair or service limit | 0.09 mm (0.0079 in.) | p. 148 |
| Wheel nut tightening torque | 382 ± 38 N•m (39 ± 3.9 kgf•m) [282 ± 28 lbf•ft] | p. 160 |
Mitsubishi FD70E Common Problems This Manual Covers
Mitsubishi FD70E hydraulic control valve solenoid or tilt solenoid reading open circuit, short circuit, or leakage
Measure solenoid current following the electrical troubleshooting procedure on page 71. A reading of 120 mA or lower indicates an open circuit, 2.4 A or higher means a short, and 140 mA or higher flags leakage. Trace the circuit on the wiring diagram on page 77 before you condemn the solenoid.
Manual Section: Electrical System p. 71Powershift transmission shows no power flow, weak output power, or speed will not shift
Check torque converter oil level first; the system takes 22 L per page 92. Then gauge main pressure and speed clutch pressure against 1.08 to 1.37 MPa on page 136, and torque converter inlet pressure against 0.05 to 0.49 MPa. Readings outside spec point you to the powershift troubleshooting charts.
Manual Section: Powershift Transmissions p. 136Lift and tilt cylinders move too slow with hydraulic pump running too noisy
Check hydraulic oil level in the 105 L tank before anything else. Test the control valve main relief setting against 19.11 MPa and confirm pump output against the rated 115 L at 2300 rpm, both listed on page 262. Inspect the 25 µ return filter described on page 264.
Manual Section: Hydraulic System p. 262Steering wheel heavy to turn, slow to return, or shuddering during operation
Test the power steering relief valve against the 10.8 MPa setting listed on page 13 before pulling anything apart. If pressure is correct, work through the steering system troubleshooting chart, then the rear axle chart for slow return and shudder. Check rear tires for uneven or early wear while you are at it.
Manual Section: Steering System TroubleshootingCooling system fan belt slack with deflection out of spec during routine inspection
Inspect the fan belt following page 21. Press the belt with 98 N (10 kgf) of force and measure deflection against 12 mm (0.47 in.). Adjust tension until it lands on spec. While you are in there, verify coolant level; total system capacity is 13.5 L per page 18.
Manual Section: Cooling System Troubleshooting p. 21Tilt cylinder rod socket nut showing looseness during the scheduled periodic inspection check
Torque the rod socket nut to 539 to 637 N·m with a torque wrench, following the inspection point on page 385. If the cylinder comes off for repair, measure piston rod runout against the 1 mm service limit on page 284 and check rod-to-bushing clearance against 0.35 mm on page 289.
Manual Section: Service Data p. 385Frequently Asked Questions
What are the replacement specifications for the hydraulic return filter on the Mitsubishi FD70E?
The hydraulic tank return filter should be replaced every 12 months or 2400 hours, whichever comes first. This is specified in the Service Data section for maintenance standards. p. 384
What is the tightening torque for the cylinder head bolts on the Mitsubishi FD70E lift cylinder?
The tightening torque for the lift cylinder head bolts is 490 N·m (50 kgf·m) [361.4 lbf·ft]. p. 286
What is the standard stall speed for the FD70E transmission?
The standard stall speed for the FD70E is 2050 ± 100 rpm. This measurement should be taken with the engine at operating temperature. p. 138
How do I adjust the fan belt tension on the S6S engine?
The fan belt tension is correct when the belt deflects 12 mm (0.47 in.) when pushed with a force of 98 N (10 kgf) at the midpoint between the drive pulley and the alternator pulley. p. 21
What is the standard hydraulic tank capacity on the Mitsubishi FD70E forklift?
The hydraulic tank capacity for the FD70E is 105 L (27.7 U.S. gal.) at the N level. p. 262
Do I get instant access to this Mitsubishi FD70E Service Manual?
Instant PDF download. You get the full 397-page searchable Service Manual immediately after payment. Open it on your laptop, tablet, or phone right in the shop.
Is printing allowed for this Mitsubishi FD70E Service Manual?
Yes. Print individual pages or full chapters for your own shop use, on letter or A4 paper.
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