Reading the serial number plates on the front chassis, rear chassis, engine and crane comes first in the Tigercat 1055C service manual PDF, a 672-page factory book (OEM ID 44483AENG) for the 1055C, 1075C and 1085C forwarders. Wiring diagrams support the electrical and computers chapter, and hydraulic schematics back up the brakes and differential locks section. Later chapters cover the drive pump, cooling fan, centre joint, crane valve, slewing system, snow blade, bunks and fire suppression. Fill the hydraulic tank to 128 L (34 US gal). Expect the return line bypass valve at 1.7 bar (25 psi). When your job is checking the 1055C drive pump high pressure relief, you have the 420 bar (6092 psi) setting in hand, plus Seal-Lok port torques from 20 Nm to 510 Nm. Chapter bookmarks take you from Safety to Miscellaneous in one click, and the text layer finds a fitting size or alarm message by keyword.
What's Inside This Tigercat 1055C, 1075C, 1085C Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction | 5 | Machine Serial Numbers |
| Machine Identification and Serial Numbers | 6 | Machine Serial Number Plate, Front Chassis Serial Number, Rear Chassis Serial Number, Engine Identification Label, Engine Serial Number |
| Standards for Machine Operator Protective Structures | 7 | Roll Over Protective Structure, Falling Object Protective Structure, Operator Protection Structure |
| Non-Approved Field Product Changes | 8 | Unauthorized Attachments, Approved Options, Engineering Manager Authorization |
| Regulatory Information | 9 | Telematics Module, Iqan-G11, Inmarsat Modem, Iridium Modem |
| Warranty–Epa | 10-11 | Emission Control Information Label, Fuel Injection System, Air Induction System, Positive Crankcase Ventilation System, Exhaust After Treatment Devices |
| Ec Declaration of Conformity | 12-18 | Electromagnetic Compatibility Directive, Machinery Directive, Brake Systems, Headboards, Permissible Sound Levels, Mechanical Vibration |
| Safety | 19-62 | |
| Controls and Operation | 63-248 | Air Conditioning, Heating and Ventilation, Alarm Messages |
| Lubrication and Maintenance | 249-384 | Care of the Machine, Diesel Exhaust Fluid |
| Electrical and Computers | 385-428 | Computer Control System, Telematics System |
| Engine and Anti-Stall | 429-440 | Flex Drive Coupling |
| Drive | 441-474 | Hydrostatic Drive System, Drive Pump |
| Brakes and Differential Locks | 475-514 | Brakes, Differential Locks |
| Cooling System | 515-528 | Cooling Fan |
| Steering, Centre Joint and Oscillation Lock | 529-562 | Centre Joint |
| Crane, Grapple and Main Pump | 563-616 | Crane Valve, Slewing System |
| Snow Blade | 617-626 | Circuit Description |
| Gate and Bunks | 627-646 | Standard Bunks, Low-Wide Bunks |
| Miscellaneous | 647-672 | Camera Monitor System, Fire Suppression System |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Hydraulic return line bypass valve pressure | 1.7 bar (25 psi) | p. 327 |
| Hydraulic tank capacity | 128 L (34 US gal) | p. 325 |
| SAE J1926 Straight Thread Port Assembly Torque (Seal-Lok) | 20 Nm (Size -2), 20 Nm (Size -3), 20 Nm (Size -4), 40 Nm (Size -5), 46 Nm (Size -6), 80 Nm (Size -8), 135 Nm (Size -10), 185 Nm (Size -12), 235 Nm (Size -14), 270 Nm (Size -16), 340 Nm (Size -20), 415 Nm (Size -24), 510 Nm (Size -32) | p. 371 |
| M12 - 1.75 GR.12.9 Bolts torque | 110 - 121 N-m (81 - 90 lbf-ft) | p. 601 |
| DEF Tank Capacity | 43 L | p. 307 |
| Tigercat FPT N67 Crankshaft Endplay Tolerance | 0.095–0.265 mm | p. 437 |
| 1075C | ||
| F165 Crane Pin keeper plate bolts torque | 457-503 Nm | p. 373 |
| 1055C | ||
| 1055C Drive Pump High Pressure Relief | 420 bar (6092 psi) | p. 455 |
| 1055C Drive Pump Charge Pressure Relief | 23 bar (334 psi) | p. 455 |
| 1055C Standard Fuel Tank Capacity | 350 L | p. 318 |
| 1075C/1085C | ||
| 1075C/1085C Standard Fuel Tank Capacity | 250 L | p. 318 |
| 1075C/1085C Drive Pump High Pressure Relief | 435 ± 3.5 bar | p. 378 |
Tigercat 1055C, 1075C, 1085C Common Problems This Manual Covers
Tigercat 1075C forwarder display goes blank or shows no contact errors on CAN-bus modules
Inspect the CAN-bus connections first, working through the Electrical and Computer Troubleshooting that starts on page 385. For a no contact error or blank display, trace the affected module's harness and connectors against the wiring diagram on page 426 before you condemn the module. Reseat each connection and recheck the display before moving on.
Manual Section: Electrical and Computer Troubleshooting p. 385Pilot system will not turn on or repeatedly turns off during operation
Limit the pilot reset override to driving the machine to a safe spot to park or service, as page 459 warns. Do not keep working until the cause of the pilot reset failure is resolved. Park on level ground, parking brake on, travel direction switch in neutral, crane in park position or on the ground, engine off (page 31) before you start diagnosing.
Manual Section: Drive System Troubleshooting p. 459Hydrostatic drive pump charge pressure reads low during the drive pump pressure check
Release accumulator pressure before loosening any fitting to install a gauge, as page 38 requires, and never check for leaks with your bare hand (page 32). Measure drive pump charge pressure against 23 bar (334 psi) following page 468. Then inspect the drive charge filter on page 328: its restriction sending unit monitors the element, and the third port bypass valve diverts oil to tank when restricted.
Manual Section: Drive System Troubleshooting p. 468Brakes will not release after several brake applications with the engine turned off
Start the engine to recharge the brake accumulator; page 477 notes it holds enough pressure for only up to 5 applications after shutdown. If release problems persist with the engine running, measure brake cylinder stroke per page 491. You work under the machine with all brakes off, so park on level ground, set Forward/Neutral/Reverse to Neutral and chock the wheels first, then remove all four brake cylinder covers.
Manual Section: Brakes and Differential Locks Troubleshooting p. 477Engine and hydraulic system overheating with dust and debris packed in the cooler package
Measure surface and system temperatures with a thermometer and wait until they are below 38°C (100°F) before starting service, per page 32. Clean dust and debris from the air intake doors, cooling system components and A/C condenser as page 50 directs. If temperatures stay high, test the fan cooling circuit and verify the cooling fan bypass valve cracking pressure of 6.9 bar on page 528.
Manual Section: Cooling System Troubleshooting p. 528Engine start circuit suspected on FPT N67 engine that will not start
Test the engine start circuit following the Engine and Anti-Stall troubleshooting beginning on page 429. Do not spray ether or any liquid starting aid into the intake: page 28 warns the computer-controlled heating element in the intake will make starting fluid explode, and the label on page 60 repeats that ether warning. Confirm each step of the start circuit check before replacing parts.
Manual Section: Engine and Anti-Stall Troubleshooting p. 429Frequently Asked Questions
How do I reset the engine fault memory on a Tigercat 1055C, 1075C, or 1085C?
To clear engine fault memory, you must obtain a PIN from your Tigercat dealer. Open the Engine Operations menu, enter the PIN, and you can clear the memory and run the machine for a cumulative engine time of 10 hours to move it to a safe location. p. 159
What is the procedure for checking the hydraulic oil level on a Tigercat forwarder?
Check the hydraulic oil level using the sight gauge accessible through the right side door. The oil level must be maintained between the HIGH and LOW marks on the level gauge. p. 325
What is the torque specification for the grapple tong taper lock pin bolts on the Tigercat 1055C, 1075C, 1085C?
The grapple tong taper lock pin bolts (FG43, FG53) must be torqued to 274 - 301 N-m (202 - 222 lbf-ft). p. 368
How often should the DEF dosing module filter be replaced?
The DEF dosing module filter should be replaced every 250 hours as part of the scheduled maintenance. p. 312
What is the procedure for bleeding the brakes on a Tigercat Bogie Axle?
To bleed the brakes, install a hose onto the bleed screws and use a container to collect the bleed oil. Loosen the service brake bleed screw to remove air, then tighten it. Repeat for each service brake bleed screw (2 per axle), then repeat for the parking brake bleed screws (2 per axle). p. 484
What do I get after purchasing this Tigercat 1055C manual?
A single searchable PDF file of 672 pages, downloadable right after payment. Nothing ships, nothing waits in the mail.
Can I print specific sections of this Tigercat 1055C Service Manual?
Yes. It prints from any PDF reader, so run off the pages you need for your own repair work.
