When a diesel lift truck won't crank because the operator presence system reads the seat as empty, the answer sits in the Utilev UT80P DSL, UT100P DSL operator manual PDF, a 128-page book (OEM ID 76501367) for this internal combustion counterbalanced forklift truck. Wiring diagrams lay out the circuits behind starting, travel direction, seat belt, hydraulic function and park brake protection, plus the abnormal symptoms each fault produces. Service intervals follow the hour meter from the 8-hour shift check through 40, 166, 1000 and 2000 hours, backed by a load capacity chart, recommended oils table and lubrication diagram. Fill the hydraulic reservoir to 110 to 120 L, budget 25 L of transmission fluid, and set the drain plug at 29 to 39 Nm. An intermittent seat switch fault can eat a whole shift. Bookmarks and a live text layer take you straight to the interlock wiring, and your truck is lifting pallets again before the next shift.
What's Inside This Utilev UT80P DSL, UT100P DSL Operator Manual
| System | Pages | Key Topics |
|---|---|---|
| Precautions for Use | 5-7 | Control and Alarm Devices, Load Capacity, Mast Tilt, Incline Operation, Refuelling, Accumulator |
| Main Parts and Components | 8-34 | Instruments, Controls and Switches, Other |
| Operating Rules | 35-42 | Leakage Checks, Maintenance Safety, Fuel Level Inspection, Exhaust Ventilation, Load Stability, Personal Protective Equipment |
| Maintenance | 43-65 | Daily/Shift Maintenance, Weekly Maintenance, Monthly Maintenance, Six-Month Maintenance, Annual Maintenance |
| Truck Structure and Stability | 66-70 | Lifting Device, Fulcrum, Centre of Gravity, Stability Triangle, Load Centre Distance, Load Capacity Chart |
| Operation | 71-75 | Starting Procedure, Engine Warm-Up, Driving Controls, Gear Shifting, Steering, Parking |
| Storage | 76-77 | Daily Storage, Long-Term Storage |
| Maintenance | 78-110 | Regular Maintenance Schedule, Bolt and Screw Tightening Torque Table, Regular Replacement of Select Parts, Recommended Oils Table, Lubrication System Diagram |
| Forklift Hoisting, Transport and Towing | 111 | |
| Main Technical Specifications | 112 | Rated Load, Lift Height, Travel Speed, Tractive Effort, Wheelbase, Diesel Engine Specifications |
| Operation and Maintenance of Lead-Acid Battery | 113-117 | Battery Storage, Electrolyte Level, Battery Charge Indicator, Charging Procedure, Electrolyte Exposure First Aid |
| Operator Presence Sensing System (Required in Most Markets) | 118-124 | Starting Protection, Forward and Reverse Protection, Seat Belt Protection, Hydraulic Function Protection, Park Brake Protection, Abnormal Function Symptoms |
| Directives and Standards | 125-126 | Machinery Directive, Noise Directive, ISO Standards, Vibration Parameters, Electromagnetic Compatibility |
| Maintenance Records | 127-128 | Date, Repair and Maintenance Work, Signed, Notes |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Drain plug tightening torque | 29-39 Nm | p. 55 |
| Water separator valve drop | 25.4 mm | p. 49 |
| Transmission oil filter tightening | 1/2 - 3/4 of a turn | p. 56 |
| Hydraulic oil reservoir capacity | 110 - 120 L | p. 94 |
| Hydraulic transmission fluid capacity | 25 L | p. 94 |
| Hydraulic system high-pressure hoses service life | 2 years | p. 93 |
| Hydraulic system inner seals and rubber parts service life | 2 years | p. 93 |
| Brake hose or rigid pipe service life | 1-2 years | p. 93 |
| Brake fluid cup service life | 2-4 years | p. 93 |
| Battery Voltage/Capacity | 24/90/20h | p. 112 |
| UT80P DSL | ||
| Rated Lifting Capacity | 8000 kg | p. 112 |
| UT100P DSL | ||
| Rated Lifting Capacity | 10000 kg | p. 112 |
Utilev UT80P DSL, UT100P DSL Common Problems This Manual Covers
Utilev UT80P DSL UT100P DSL diesel engine will not start after several key attempts on a cold morning
Verify the shift lever is in neutral, since the engine only starts there (page 24). With OPS fitted, sit upright and fasten the seat belt first, per page 118. Crank no more than 5 seconds, then return the key to O and wait 2 minutes, following page 71. Below minus 5 °C, turn the key far right and start only after the pre-heat indicator goes out. After three failed attempts, investigate the cause.
Manual Section: Operation p. 71Coolant temperature gauge needle climbs into the red zone while working loads on a hot shift
Reduce engine speed and keep it running slow; do not shut it off hot. Open the engine cover for ventilation, then stop the engine once temperature drops, per page 65. Check coolant volume, adding water if low, and fan belt tightness (page 10). Never open the radiator cap above 70 °C; loosen it slowly, without gloves (page 44). Blow blocked radiator fins clear with compressed air at a right angle, wearing safety glasses.
Manual Section: Engine Overheating p. 65Brake pressure alarm keeps sounding after turning the key to ON before driving off
Press and hold the brake pedal for more than 10 seconds; the alarm shuts off once the accumulator builds pressure, per page 34. Pump the pedal several times after every start (page 33). If the alarm will not clear, do not use the truck until it is repaired (page 71). Before any brake repair, shut the engine off and press the pedal 5 to 10 times to release accumulator energy, as page 34 warns.
Manual Section: Braking System Troubleshooting p. 34Fuel filter warning lamp illuminates while the engine is running at idle or under load
Turn off the engine and place a container under the fuel filter, following page 49. On the rotating type, turn the drain valve 3.5 turns anticlockwise until it drops 25.4 mm and begins to drain. Drain water from the separator until clean fuel shows. Close the valve by lifting and rotating clockwise by hand only; overtightening damages the threads.
Manual Section: Fuel System Maintenance p. 49Engine diagnostic lamp lit on the dash with a fault code that will not clear
Remove screws 1 to 3 on the switch box next to the battery. With the key at ON, set the Engine diagnostics check switch ON and read the code on light [F], per page 15. Use the Engine check turn page switch to view any remaining faults. After the repair, switch diagnostics off, turn the key to OFF, and wait 30 seconds before restarting.
Manual Section: Engine Fault Diagnostics p. 15OPS alarm keeps sounding with park brake applied and operator seated correctly
Verify you are sitting upright in the center of the seat, back against the backrest, seat belt latched, and the direction lever in the center position, per page 118. If the alarm still sounds with the park brake on, or the OPS light stays lit after you sit properly, park immediately in a safe place and contact an authorized service technician, as page 120 directs.
Manual Section: Operator Presence Sensing System (OPS) Diagnostics p. 120Frequently Asked Questions
How do I retrieve and clear diagnostic fault codes on the UT80P DSL and UT100P DSL?
To view fault codes, set the 'Engine diagnostics check' switch to 'ON' while the key switch is in the 'ON' position. The fault code will be indicated by light [F]. If multiple faults exist, use the 'Engine check turn page' switch to view them. Once repaired, lights [E] and [F] will go out; turn the key to 'OFF' and wait 30 seconds before restarting. p. 15
What are the engine oil and oil filter replacement specifications for the Utilev UT80P DSL, UT100P DSL?
Engine oil should be changed monthly (every 166 hours). The drain plug tightening torque is 29-39Nm. When installing the new oil filter, apply a small amount of oil to the rubber ring and install by hand; do not use a spanner to tighten it. p. 55
What is the recommended fuel filter service interval for the Utilev UT80P DSL, UT100P DSL?
In dusty or dirty operating environments, the fuel filter should be cleaned once a month and changed every six months. When installing a new filter, do not add fuel to the filter beforehand, as this will accelerate wear on the fuel system components. p. 60
What is the tightening torque for the front and rear wheel nuts on the Utilev UT80P DSL, UT100P DSL?
The tightening torque for front tire nuts on 8T-10T models is 500-585 Nm. For rear tire nuts on the same models, the tightening torque is 441-588 Nm. p. 54
How do I check the hydraulic oil level?
Check the oil level in the hydraulic oil tank using the dipstick; it should be between the upper and lower limit marks. For a standard 8T forklift at its lowest position, the oil level should reach the 70 mark on the dipstick. p. 46
What format is this Utilev UT80P DSL manual in?
A 128-page Operator Manual in searchable PDF format, available the moment you complete checkout. View on computer, tablet, or phone, with no shipping wait.
Does this Utilev UT80P DSL manual allow printing?
You can. Print the sections you want for your own use and keep the file as your backup.
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