Tigercat 635D Skidder Service Manual – Complete Repair & Maintenance Guide PDF

Description

Tigercat 635D Skidder Service Manual – Issue 2.0, November 2010

This Tigercat 635D Skidder Service Manual is the complete workshop-level reference for technicians and owners maintaining or repairing the 635D skidder. It covers machines from serial number 6351001 and up, with procedures written for the skilled mechanic who needs correct specifications, step-by-step disassembly, pressure checks, adjustment values, and system descriptions rather than generic advice. From the hydrostatic drive system and front axle brakes to the grapple rotate motor and dozer blade relief settings, this manual provides the technical detail required to service the 635D properly.

File Details

• Manual Type: Service Manual
• Brand: Tigercat
• Model: 635D Skidder
• Serial Number Range: 6351001 and up
• Edition / Issue: Issue 2.0
• Publication Date: November 2010
• Language: English
• Format: PDF
• Page Count: 458

Chapters Covered

• Introduction – serial numbers, ROPS/FOPS/OPS certification, non-approved field product changes
• Safety – general safety precautions, operating safety, servicing safety, fluid injection injury, fire prevention, lightning safety, safety labels
• Lubrication and Maintenance – preventive maintenance schedule, oil sampling program, filters, fluid capacities, center joint lubrication, grapple snubber maintenance, pressurized water system
• Electrical and Computers – IQAN computer control system, MD3 display, XS2 and XA2 modules, CAN bus, gauges and alarms, wire colour code chart, electrical schematic diagrams
• Engine Start and Stop – start circuit diagrams, main pump unloading valve, parking brake switch and lever control
• Drive – hydrostatic drive system, drive pump (earlier and later designs), charge pump, drive motor, travel/engine speed pedals, maximum speed control, hydrostatic setup procedure, drive pump pressure checks, front axle, bogie axle, planetary wheel ends
• Brakes and Differential Locks – main pump, brake pedal valve, accumulator, multifunction manifold, differential lock control, parking brake (driveline and lever), pressure settings
• Oil Cooler and Fan – cooling pump, hydraulic filters, hydraulic oil tank, suction strainer, oil cooler circuit, variable pitch fan
• Steering and Center Joint – left hand steering joystick, steer control valve (metered and quick steer), priority valve, center joint preload, grease seals
• Grapple, Arch and Boom – control valve, joystick (6-button), arch/boom circuit, grapple circuit, pressure checks and adjustments
• Winch – Allied winch, control valve, multifunction manifold, circuit description, pressure checks
• Dozer Blade – control valve, dozer blade control lever, circuit description, dozer up/down reliefs

The Tigercat 635D Skidder Service Manual goes well beyond routine maintenance. It documents the hydrostatic drive system that powers the 635D, including both the earlier 180 cc drive pump used from serial 6351001 to 6351035 and the later 210 cc drive pump fitted from 6351036 and up. It explains the IQAN computer control system that manages engine, hydrostatic drive, and valve functions, with diagnostic trouble-shooting guidance and message descriptions for the MD3 display. The manual also covers the front axle with its wet disk service brakes and hydraulic differential lock, the rear bogie axle with slew bearing and planetary wheel ends, the steering and center joint assembly, the grapple rotate motor and snubbers, the Allied W400 winch, and the dozer blade hydraulics. Each major system is documented with circuit descriptions, pressure checks, adjustment procedures, and exploded illustrations where needed. Torque specifications, fluid capacities, operating pressures, and relief valve settings are given for the components that require them, so the technician is not working from guesswork.

What This Manual Enables You to Do

With this Tigercat 635D service manual on hand, a qualified technician can diagnose faults across the machine’s hydrostatic drive, electrical, hydraulic, and mechanical systems rather than swapping parts. The hydrostatic setup procedure walks through charge pressure, pump neutral, high pressure relief, pressure override, motor begin-of-displacement, and maximum speed settings in the correct sequence, which is critical for achieving proper machine performance and avoiding component damage. The electrical and computer section supports troubleshooting of the IQAN control system, including module no-contact errors, VREF faults, voltage input errors, and CAN bus issues. The brake and differential lock section provides the procedures for accumulator pre-charge checks, parking brake cable adjustment, and differential lock pressure settings. Front axle brake wear plate inspection, center joint preload adjustment, and planetary wheel end disassembly and reassembly are covered with the dimensions and torque values needed to complete the job correctly.

This kind of depth matters because the 635D is a machine where incorrect pressures or settings can cause premature failure of the drive motors, transmission, or hydraulic pumps. Having the actual Tigercat procedures, rather than generic skidder advice, reduces the risk of damaging expensive components and helps ensure that repairs are done right the first time.

IMAGES PREVIEW

Delivered as an instant PDF download, this Tigercat 635D Skidder repair manual can be stored on a laptop, tablet, or phone for use in the shop or in the field, and pages can be printed as needed for the job at hand. No shipping, no waiting – once payment is complete, the file is available immediately so work can begin without delay.