Bobcat CT335 Compact Tractor Service Manual – HST & SST Repair Guide

Description

Bobcat CT335 Compact Tractor Service Manual – HST & SST Repair Coverage

The Bobcat CT335 Compact Tractor Service Manual – HST & SST Repair Guide is a detailed shop-service reference for CT335 compact tractors covering both hydrostatic transmission (HST) and synchronized shuttle transmission (SST) configurations. The manual identifies HST machines from serial number ABH811001 and above and SST machines from serial number AK9G11001 and above. It is written for compact tractor mechanics and provides servicing, adjustment, testing, troubleshooting, removal, installation, disassembly and assembly procedures across the tractor’s major systems.

This CT335 service manual goes well beyond routine operator maintenance. It includes the information needed to diagnose hydraulic and steering faults, service hydrostatic and drive components, inspect and adjust braking and safety interlock systems, work on the 3B183LWH three-cylinder diesel engine, service electrical components, remove body and cab parts, and repair heating, ventilation and air-conditioning equipment where fitted. Numerous procedures are supported by photographs, component illustrations, exploded views, hydraulic schematics, troubleshooting charts, service specifications and torque values.

File Details

• Manual type: Service Manual
• Brand / model: Bobcat CT335 Compact Tractor
• Transmission coverage: HST and SST
• Serial coverage: HST – S/N ABH811001 & Above; SST – S/N AK9G11001 & Above
• Language: English
• Page count: 1161 pages
• File format: PDF
• Document number: 6987078 (12-09)
• Copyright: Bobcat Company 2009

Workshop Scope and Service Information

The Bobcat CT335 Compact Tractor Service Manual is organized for practical workshop use. The opening material covers safety, serial-number locations and tractor identification, including standard tractor layout plus configurations shown with an optional loader and rear ballast, a three-point implement and front ballast, and an optional cab. The service sections then move system by system through maintenance, hydraulics, hydrostatic drive, mechanical drive components, mainframe, electrical, engine service, HVAC and specifications.

Both HST and SST differences are addressed throughout the manual. Examples include separate axle toe-in procedures, neutral-start and operating safety-interlock checks, transmission and axle coverage, HST travel-control components, SST F-N-R and clutch-related procedures, and transmission-specific engine flywheel and housing information. This makes the manual useful when identifying which procedure applies before disassembly or adjustment work begins.

Chapters Covered

• Safety and Maintenance: supporting the tractor on jackstands; transporting and towing; axle toe-in for HST and SST; service schedule; air cleaner; cooling and fuel systems; engine oil service; hydraulic / hydrostatic / transmission fluid and filters; front axle lubricant; spark arrestor; storage and return to service; belt adjustment; lubrication points; tire and wheel service; safety interlock systems; parking and service brakes; HST travel pedal; SST F-N-R lever and clutch pedal; cruise control; speed-range calibration; Bob-Tach inspection; differential lock.
• Hydraulic System: hydraulic system information and symbols; hydraulic, joystick, power-lift and steering troubleshooting; main relief valve testing and adjustment; hydraulic pump removal, disassembly and assembly; steering valve service and pressure testing; steering cylinders; right joystick and joystick valve; rear PTO engagement testing; auxiliary control valve; rockshaft; MLS and modulator valves; three-point hitch housing, cylinder and position control; front wheel drive engagement testing.
• Hydrostatic System – HST: hydrostatic system troubleshooting; hydrostatic pump removal and installation; parts identification; disassembly, inspection and assembly; hydrostatic pump start-up; charge-pressure testing; hydrostatic drive-pressure testing; neutral valves; travel-control pedals, linkage and pivot arms.
• Drive System: axle and differential service for HST and SST versions; front axle cover and case groups; bevel gear cases; pinion shafts; differential removal, inspection and installation; axle shafts; drive shaft; transmission service; brake components; steering axle adjustment; separating the tractor for HST and SST procedures.
• Mainframe: cab and non-cab body components; console and floor covers; fenders; firewall; engine and side covers; grille; operator seat; ROPS; drawbar and three-point lower links; PTO safety shield; fuel tank; transmission case; optional cab-related covers and mounting components.
• Electrical System: electrical system information; battery; alternator; starter; instrument panel; lighting; horn; fuel-level sender; seat sensor; rear and mid-PTO switches; F-N-R lever circuits; speed-range and cruise-control related components; wiring and electrical troubleshooting information.
• Engine Service: engine information and specifications; cylinder head, valves and valve timing; cylinder, pistons, rings and connecting rods; crankshaft, camshaft and timing gears; compression checking; engine bolt torque; engine removal and installation; fuel injection pump and nozzles; lubrication system and oil pressure testing; fuel-system service and injection timing; cooling-system components; fan; engine speed control; flywheel and housing procedures for HST and SST.
• Heating, Ventilation and Air Conditioning: safety and regular maintenance; general air-conditioning service guidelines; compressor and compressor oil; condenser; evaporator / heater unit; heater coil and valve; blower fan; resistor; receiver / drier; expansion valve; pressure switch; thermostat; HVAC control panel; air ducts; charging and reclamation; temperature / pressure chart; troubleshooting.
• Specifications: tractor dimensions and performance; engine, hydraulic and electrical specifications; PTO and drive-system data; steering; fluid capacities; tires and inflation pressures; loader hydraulic data; general bolt torque specifications; fuel, coolant and lubricant information; hydraulic fluid specifications and conversions.

Across these chapters, the manual combines procedure steps with inspection limits, adjustment values and test data. Examples visible in the service information include brake pedal free travel, axle toe-in measurements, steering and hydraulic relief pressures, belt deflection values, wheel fastener torque, service intervals, hydraulic reservoir capacity and engine service limits. The specifications section identifies the engine as the Daedong 3B183LWH Interim Tier IV, a liquid-cooled three-cylinder diesel, and gives core engine, hydraulic, electrical, PTO, drive, capacity and tire data for the CT335.

Diagnostics, Testing and Component Repair

A major strength of this Bobcat CT335 service repair manual is the amount of fault-finding and test work included before component replacement. Hydraulic troubleshooting charts link symptoms such as slow hydraulic operation, overheating, low operating pressure, steering problems and power-lift faults to possible causes and corrections. The manual provides main-relief-valve testing procedures for machines with different joystick and rear auxiliary hydraulic configurations, as well as steering pressure tests and hydrostatic charge and drive pressure checks.

Component-level service is also extensive. The hydraulic pump and steering valve sections show parts identification, disassembly, inspection and assembly in sequence. Similar workshop procedures are used throughout the drive, transmission and engine sections, allowing a mechanic to follow the order of removal, inspect components and clearances, replace seals or damaged parts, and reassemble with the specified tightening values. Exploded views and photographs help identify internal parts and their orientation during repair.

Engine, Powertrain and Hydraulic Coverage

The engine section covers the 3B183LWH vertical, water-cooled, four-cycle, three-cylinder diesel engine. Service data includes cylinder-head flatness, compression pressure, valve clearances, valve timing, cylinder bore, crankshaft and connecting-rod information, injection components, lubrication and cooling. Fuel-system procedures include injection-pump work, timing, injector removal, nozzle-pressure checking, spray condition and bleeding.

For HST tractors, the manual includes hydrostatic pump rebuilding and test procedures, drive-pressure diagnosis, travel-pedal components and HST-specific adjustment information. For SST tractors, it provides the corresponding clutch, F-N-R, transmission and axle procedures. The hydraulic section covers the gear-type pumps, steering circuit, implement circuit, three-point hitch system, optional joystick and auxiliary circuits, with schematics that show flow paths, valves, relief settings and key components.

Maintenance and Adjustment Reference

The maintenance chapter provides a service schedule covering routine checks and periodic work on engine oil, hydraulic / transmission fluid, air filtration, cooling, interlocks, seat belt, tires, brakes, PTO, three-point linkage, wheel fasteners, front differential, grease points, filters, hoses, belts and engine valves. Separate procedures explain fluid replacement, coolant service, fuel-filter work, air bleeding, lubrication locations, brake adjustment, clutch free travel, wheel spacing and storage preparation.

This practical material is useful both when carrying out scheduled service and when a repair requires related checks before returning the tractor to operation. Safety interlock inspection procedures are given separately for HST and SST machines, and the foreword directs mechanics to verify machine functions after service or repair.

Repair Your CT335 with the Correct Procedures and Specifications

The Bobcat CT335 Compact Tractor Service Manual – HST & SST Repair Guide supports the work that matters in a real workshop: maintenance, adjustment, troubleshooting, pressure testing, hydraulic repair, HST and SST powertrain service, brake and steering work, electrical diagnosis, engine disassembly and repair, PTO and three-point hitch service, body and cab removal, and HVAC repair. Having the correct serial-range procedures, test pressures, torque values, service limits, diagrams and component sequences helps reduce guesswork when diagnosing faults or rebuilding assemblies.

Purchase provides instant PDF delivery after payment, with no physical shipping required. The manual can be opened on a computer, tablet or phone and pages can be printed when a paper reference is more convenient at the workbench.

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