Keeping six Manitou MLT telehandler variants on the factory servicing schedule is what these 154 pages buy: the Manitou MLT 634-120 LSU operator manual PDF (OEM 647387 EN), covering the 634-120 and 735-120 LSU, PS and E3 builds included. Servicing takes up about a third of the book, stepping from daily checks through the 50, 250, 500, 1000 and 2000 hour services, while the description chapter lays out instruments, controls, dimensions and the load chart. Load handling gets equal care: high loads on tyres or stabilizers, suspended loads, platform and radio-control use, plus attachment specs and an Australian supplement. Fill the engine with 16 litres of oil and the cooling circuit with 22.5 litres. Guess the fill and you pay for an engine. Bookmarked and text searchable, the PDF lets you confirm a fluid volume or the 7.5 A hydraulic control unit fuse rating before you order, so the right part arrives first time.
What's Inside This Manitou MLT 634-120 LSU, 735-120 LSU Operator Manual
| System | Pages | Key Topics |
|---|---|---|
| Instructions to the Company Manager | 8-9 | Site, Operator |
| Instructions for the Operator | 10-27 | Preambule (Operator’s Manual, Authorization for Use in France, Maintenance, Modification of the Lift Truck, Lifting People) |
| Maintenance Instructions of the Lift Truck | 28-29 | Placing the Jib Safety Wedge, Maintenance (Lubricant and Fuel Levels, Hydraulic, Electricity, Welding, Washing the Lift Truck) |
| If the Lift Truck Is Not to Be Used for a Long Time | 30-32 | Introduction, Preparing the Lift Truck, Protecting the I.C. Engine, Protecting the Lift Truck, Bringing the Lift Truck Back Into Service |
| Description | 33-92 | Declaration of Conformity, Safety Plates and Stickers, Identification of the Lift Truck, Characteristics, Dimensions and Load Chart, Instruments and Controls, Towing Pin and Hook |
| Maintenance | 93-134 | Maintenance Instructions, Servicing Schedule, Daily Service, 50 Hours Service, 250 Hours Service, 500 Hours Service, 1000 Hours Service, 2000 Hours Service |
| Optional Attachments for Use with the Range | 135-150 | Introduction, Picking Up the Attachments, Technical Specifications of Attachments, Attachment Shields |
| Specific Australia | 151-154 | Operator's Manual Supplement, Load Chart |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Battery | 12 V - 2x 74 Ah - 2x 680 A EN | p. 44 |
| Alternator | 14 V - 90 - 150 A | p. 44 |
| Hydraulic pump capacity | 63 cm3 | p. 45 |
| Engine Oil Capacity | 16 Liters | p. 100 |
| Cooling Circuit Capacity | 22,5 Liters | p. 100 |
| Fuel Tank Capacity | 120 Liters | p. 100 |
| Gear Box Oil Capacity | 16,6 Liters | p. 100 |
| Angle Gear Box Oil Capacity | 2,2 Liters | p. 100 |
| Hydraulic Oil Tank Capacity | 135 Liters | p. 101 |
| Front Axle Differential Oil Capacity | 8,1 Liters | p. 101 |
| Rear Axle Differential Oil Capacity | 8,1 Liters | p. 101 |
| Front Wheels Reducers Oil Capacity | 0,8 Liter | p. 101 |
Manitou MLT 634-120 LSU, 735-120 LSU Common Problems This Manual Covers
Manitou MLT 634-120 LSU longitudinal stability limiter showing strain gauge or boom angle sensor fault code
Check the fault shown on the warning device against the error code table on page 108. That table separates regulating, safety valve, angle calibration, strain gauge, boom angle sensor and telescope control faults. Before lifting any load, verify that the F7 warning device and longitudinal stability limiter fuse (7.5A) on page 68 is intact. For any listed fault, page 107 says to contact your dealer, stating the error code.
Manual Section: Longitudinal Stability Limiter and Warning Device Error Codes p. 107Engine cranks but will not start after running out of fuel or a fuel system replacement
Fill the tank first; page 100 lists its capacity as 120 liters. Then bleed the fuel system following the procedure on page 130 before you crank again, because air left in the lines will keep the engine from firing. Don't engage the 12 V, 3,3 kW starter for more than 15 seconds at a time (page 14), and never work on the high-pressure fuel system yourself; page 130 leaves it to approved technicians.
Manual Section: Fuel System Bleeding p. 130Starter not engaging when turning the key with no response from the starter relay
Disconnect the battery before working on the electrical circuit and never short-circuit the starter relay to start the engine (page 29). Check the battery first against the 12 V, 2x 74 Ah, 2x 680 A EN rating on page 44. Inspect the F43 cab and starter relay electronic control unit fuse (10A) on page 69 and the F31 starter relay fuse (5A) on page 69. If both fuses are good, check the F40 and F41 key switch fuses (40A).
Manual Section: Electrical System Troubleshooting p. 69Jib hydraulic movements slow or not responding after startup with the engine running normally
Never loosen unions, hoses or any hydraulic component with the circuit under pressure (page 29). Check the hydraulic oil level and top up as needed; page 101 lists the tank capacity as 135 liters. Inspect the F15 hydraulic movement control unit fuse (20A) and the F1 hydraulic control unit fuse (7.5A) on page 68. If the oil level and fuses are good, check that the hydraulic filter replacement is up to date on the maintenance schedule on page 102.
Manual Section: Hydraulic Circuit Maintenance p. 101Transmission oil temperature climbing or gear box oil pressure low during travel
Check the gear box oil level with the machine stopped before you drive any further; page 100 lists the gear box capacity as 16,6 liters. If the selector does not respond, verify the F8 forward/neutral/reverse selector fuse (15A) on page 68. If the oil level is correct but pressure or temperature stays out of range, stop the engine and look for the cause; if the level keeps dropping abnormally, consult your dealer, as page 63 directs.
Manual Section: Transmission Troubleshooting p. 100Engine running hot with low cooling liquid level or a clogged radiator core
Check the cooling liquid level with the engine cold and top up; page 100 lists the full circuit capacity as 22,5 liters. Clean dirt out of the radiator core as page 110 describes, but do not use a water jet or high-pressure steam. If your machine has the optional self-cleaning fan, verify its F17 fuse (5A) on page 68. If the level and the core are both good, stop the lift truck and look for the cause of overheating (page 62); if the warning persists, consult your dealer.
Manual Section: Cooling System Maintenance p. 100Frequently Asked Questions
How do I reset the longitudinal stability limiter and warning device error codes?
To reset the device, ensure the lift truck is on flat, level ground with wheels straight and the engine cold. Simultaneously press and hold the "BUCKET" MODE and TEST buttons until two audible beeps confirm the start of the procedure. Provide a fork carrier or bucket with a load of at least half the rated capacity, and after the reset retract the telescope, because the truck is left in an overloaded condition; if in doubt, consult your dealer. Follow the specific stages (1-4) detailed on page 133, which involve specific boom positioning and button presses to clear the fault. p. 133
What are the torque specifications for the wheel nuts on the Manitou MLT 634-120 LSU?
The tightening torque for the wheel nuts is 630 N.m ± 15% for both front and rear tires. It is essential to check and adjust these as part of the maintenance schedule to prevent damage to the wheel bolts and wheels. p. 106
What is the engine oil capacity for the Manitou MLT 634-120 LSU?
The engine oil capacity for the I.C. engine is 16 Liters. Use the recommended MANITOU Oil GOLD for optimal performance. p. 100
What is the service interval for changing the engine oil and oil filter on the Manitou MLT 634-120 LSU?
The engine oil and engine oil filter cartridge must be changed every 500 hours of operation. p. 102
What is the hydraulic oil tank capacity for the Manitou MLT 634-120 LSU?
The hydraulic oil tank has a capacity of 135 Liters. The recommended oil is MANITOU Oil Hydraulic ISO VG 46. p. 101
Is this Manitou MLT 634-120 LSU manual a download or a disc?
Instant PDF download. You get the full 154-page searchable Operator Manual immediately after payment. Open it on your laptop, tablet, or phone right in the shop.
Can I print specific sections of this Manitou MLT 634-120 LSU Operator Manual?
Yes. Printing works from any reader and any printer, for your own shop use.
Reviews
There are no reviews yet.