Left and right Curtis 1234 traction controllers make the electrical side the hardest system on these trucks, and this 49-page Utilev service manual (OEM ID 76002086) maps it thoroughly, then widens to gearbox, steering, brakes, hydraulics and mast for five variants of the PTE 3-wheel electric counterbalanced forklift truck. Fault code tables in this Utilev UT13PTE, UT15PTE, UT16PTE, UT18PTE, UT20PTE service manual PDF decode traction controller, handheld display and LED flash codes, and troubleshooting tables cover pre-charge failures, severe undervoltage and encoder faults. Wiring schematics trace battery, pump motor, drive motor, relays and fuses for both Australian Standard and standard builds; the hydraulic schematic routes oil from the main pump through the multi-way valve to the lift and tilt cylinders. Expect 80 bar at the foot brake, never over the 100 bar maximum, and fill the gearbox with just 0.35 L. Condemn a controller on a hunch and you pay for a part the truck never needed. The bookmarked, searchable PDF travels wherever your truck sits.
What's Inside This Utilev UT13PTE to UT20PTE Series Manual
| System | Pages | Key Topics |
|---|---|---|
| Drive System | 5-7 | Gearbox, Structure |
| Steering System | 8-10 | Steering Device, Steering Axle |
| Braking System | 11-12 | Brake Master Cylinder, Hand Brake |
| Hydraulic System | 13-16 | Main Oil Pump, Multi-Way Valve, Pressure Adjustment of Main Safety Valve, Hydraulic Schematic Diagram |
| Lifting System | 17-20 | Mast, Lift Cylinder, Tilt Cylinder |
| Controller | 21-22 | MOS Technology, Steer Wheels Angle Sensor, Safety Protection Features, Operating Characteristics, Controller Maintenance |
| Fault Code Tables | 23-27 | Curtis 1234 Controller Status, Left Traction Controller Codes, Right Traction Controller Codes, Handheld Display Fault Codes, Instrument Display Codes |
| Diagnostics and Troubleshooting | 28 | 1313-4401 Programmer, Status LED Display, LED Flash Codes, Fault History, Controller Diagnostics |
| Troubleshooting Tables | 29-37 | Controller Overcurrent, Current Sensor Fault, Pre-Charge Failed, Severe Under Voltage, Severe Overvoltage, Encoder Fault |
| Schematic Diagram (Australian Standard) | 38-42 | Battery, Pump Motor, Drive Motor, Relay, Fuse, Strobe Light |
| Schematic Diagrams (Australian Standard and Standard) | 38-49 | Battery, Pump Motor, Drive Motor, Relay, Fuse, Strobe Light |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Gearbox Oil Capacity | 0.35 L | p. 5 |
| Gearbox Weight (Without Oil) | 31 kg | p. 5 |
| Foot Brake Operating Pressure | 60-80 bar | p. 5 |
| Foot Brake Normal Pressure | 80 bar | p. 5 |
| Foot Brake Maximum Pressure | 100 bar | p. 5 |
| Hand Brake Wear Limit Stroke | 13 mm | p. 5 |
| Basic Mast Weight | 428 kg | p. 18 |
| UT13PTE | ||
| Main Relief Valve Pressure (1.3T) | 14 MPa | p. 15 |
| UT15PTE | ||
| Main Relief Valve Pressure (1.5T) | 15.5 MPa | p. 15 |
| UT16PTE | ||
| Main Relief Valve Pressure (1.6T) | 15.8 MPa | p. 15 |
| UT18PTE | ||
| Main Relief Valve Pressure (1.8T) | 16.5 MPa | p. 15 |
| UT20PTE | ||
| Main Relief Valve Pressure (2.0T) | 17.5 MPa | p. 15 |
Utilev UT13PTE to UT20PTE Series Common Problems This Manual Covers
Utilev UT13PTE to UT20PTE forklift drive gearbox gives loud impact sound when travelling and changing direction
Check the gearbox oil level first and top up with ATF DEXRON II; the gearbox holds 0.35 L per the chart on page 5. If the clunk on direction changes or gear noise persists, adjust the gear backlash. Inspect the gears and replace any that show excessive wear, because worn gears keep knocking however you set the backlash.
Manual Section: Drive System Troubleshooting p. 5While travelling, steering on the rear steer axle feels hard and heavy at the wheel
Check the diverter valve pressure and adjust it if it is too low, then bleed air from the steering oil line. If the wheel stays heavy, inspect whether the steering gear fails to centre; replace a broken or weak positioning spring. Check the steering cylinder piston seal for excessive internal leakage, following the chart on page 10.
Manual Section: Steering System Troubleshooting p. 10Foot brake pedal gives insufficient braking force and truck takes too long to stop
Inspect the brake lines for leaks, rectify them and top up with DOT3 brake fluid. Bleed air from the brake line, then flush any clogged oil line. If the pedal still feels weak, rectify or replace the brake master cylinder following page 12. Foot brake operating pressure should sit at 60-80 bar, listed on page 5.
Manual Section: Braking System Troubleshooting p. 12With the lift lever in neutral position, the forks and fork carriage drop noticeably
Check that the multi-way valve stem is centred and holds the neutral position. Inspect the wear clearance between valve body and valve stem, and replace the stem to the required clearance following page 14. Flush or replace an overload valve that is worn or stuck with dirt, and overhaul the cylinder if its seals are defective.
Manual Section: Multi-Way Valve Troubleshooting p. 14Lifting system feels weak and the mast cannot raise the fork carriage with a load
Check the hydraulic lines for leaks; compress the coupling nut and inspect the sealing gasket and nut for damage. Replace a worn lift cylinder piston seal with a new Y-ring and replace worn oil pump parts or the pump. If the safety valve spring is defective, replace it and set main safety valve pressure for your model on page 15; place the load stably and securely, and do not readjust pressure unnecessarily.
Manual Section: Lifting System Troubleshooting p. 17Traction controller red and yellow LEDs flash and display shows 1.7 severe under voltage
Check for a blown B+ fuse and confirm the main contactor closes. Verify the battery was not disconnected while driving and that battery resistance is not too high. Connect the 1313-4401 programmer, read the Monitor, Battery: Capacitor Voltage menu and check Battery Menu parameters for misadjustment, per page 23. Confirm the truck is not seriously overloaded.
Manual Section: Electrical System Fault Code Tables p. 23Frequently Asked Questions
How do I reset fault codes on the Curtis 1234 controller?
To clear most faults on the Curtis 1234 controller, you must cycle the key switch (KSI) off and back on. For specific faults like code 14, you may need to cycle the Interlock input or use the VCL function Pre-charge(). p. 29
What is the reduction gearbox oil capacity on the Utilev UT13PTE to UT20PTE Series forklift?
The reduction gearbox has an oil capacity of 0.35 L. The recommended oil type is ATF DEXRON II. p. 5
How do I adjust the main safety valve pressure on the Utilev UT13PTE to UT20PTE Series forklift?
Place a load rated at 125% of the forklift's capacity (for example 2000 kg on a truck with a rated load of 1600 kg, page 15) on the forks. Depress the service brake pedal fully and operate the lift lever; if the forks lift within 0–300 mm, the pressure is correct. If not, remove the floor plate and turn the adjusting screw clockwise to increase pressure or anticlockwise to decrease it. p. 15
What is the hand brake lever pulling force specification for the Utilev UT13PTE to UT20PTE Series forklift?
The hand brake lever pulling force is specified as 100 N. The stroke is 6 mm, with a wear limit stroke of 13 mm. p. 5
What is the maximum steering angle for the steering axle?
The steering axle allows for a maximum steering angle of 85° in both directions. p. 9
Is this Utilev UT13PTE Service Manual a digital download?
This is a 49-page searchable PDF ready for immediate download. Works on any device, so pull it up on your phone while you're under the hood. No shipping, no waiting.
Does this Utilev UT13PTE manual allow printing?
Yes. Print the pages or sections you need for your own shop use. Any standard printer works.
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