New Holland TM120, TM130, TM140, TM155, TM175, and TM190 Tractor Workshop Manual (P/N 604.55.111.02)

• 7,683-page PDF spanning five volumes of the New Holland Repair Manual - TM Series Tractors, document no. 604.55.111.02, dated February 2006, for TM120, TM130, TM140, TM155, TM175, and TM190 tractors.
• Covers tractor splitting, engine removal, and 7.5L CNH engine overhaul: cylinder head and valve repair, hydraulic tappets, timing gears, pistons, cylinder block, crankshaft, lubrication and cooling systems, compression testing, plus Bosch VE and Bosch VP fuel-system timing, bleeding, testing, and overhaul.
• Separates Range Command, Power Command, Dual Command, and Shuttle Command transmission work, with power-flow descriptions, clutch and synchronizer calibration, hydraulic pressure tests, error-code diagnosis, limp-home procedures, removal, internal disassembly, reassembly, and adjustment.
• Details closed-center load-sensing and open-center hydraulics, model-specific variable-flow pump repair, Electronic Draft Control, mechanical and electro-hydraulic remote valves, hydrostatic steering, service and trailer brakes, and related flow, leakage, and pressure tests.
• Includes standard, suspended, and SuperSteer front axle repair; Terraglide diagnostics and calibration; rear axle, final drive, and differential repair; rear and front PTO overhaul; front lift, air-conditioning, and cab removal work.
• Provides linear wiring diagrams, connector and harness views, fault-code charts, diagnostic H-routines, and factory calibrations for transmission controllers, EDC sensors and solenoids, ground-speed and steering-angle inputs, EHR levers, suspended front axle, and PTO torque and clutch systems.

Coverage by Model and Build

The manual does not treat the TM range as one generic tractor. Power Command full-powershift service is divided between the 120-155 and 175-190 groups; variable-flow pumps, rear axles, service brakes, external lift rams, and rear PTO assemblies are also split by model family. Range Command semi-powershift, Dual Command HI-LO, and Shuttle Command mechanical units each have their own operating descriptions and repair chapters.

The electrical volumes make the build breaks especially clear. Harness and connector sections cover full Powershift 175/190 tractors from ACM263461, full Powershift 120-155 tractors from ACM262719, Semi-Powershift tractors from ACM263458, and Dual Command 120-140 tractors from ACM262036. A later section covers the ACM265009 Semi-Powershift processor reduction change, while the updated wiring index identifies mechanical-transmission models from ACM262853. This helps prevent the wrong pin locations, controller data, or fault charts from being used.

Workshop-Level Repair and Diagnosis

Engine coverage goes well beyond routine maintenance. The 7.5L chapter identifies work that can be completed in the tractor and operations that require engine removal, then supplies inspection and repair limits, torque sequences, sealant references, and special-tool listings. The fuel section distinguishes the mechanically controlled Bosch VE system from the electronically controlled Bosch VP system. The engine chapter also separates piston-pin specifications at TM175 serial 13027 and TM190 serial 13013, so early and late parts are not treated as interchangeable.

Transmission chapters explain internal power flow before moving into clutch-pack service, shaft end-float and bearing adjustments, valve overhaul, controller calibration, and operational testing. Hydraulic diagnosis follows the circuits from low-pressure supply to high-pressure demand, then covers load-sense, charge-pressure, pump-flow and leak, steering, lift-ram, and transmission clutch-pressure tests.

Useful visual references include the 7.5L engine lubrication and timing-gear diagrams, Power Command transmission cross-sections and power-flow drawings, the variable-displacement piston-pump sectional view, Terraglide system schematics, colored power-brake operating diagrams, and model-specific linear wiring diagrams with connector-location keys.

Electrical, Calibration, and Tooling Detail

The fault-code volumes cover Power Command, Range Command, Dual Command, EDC, suspended front axle, PTO, electronic hydraulic remotes, engine control, and instrument-cluster systems. Diagnostic H-routines and calibration chapters document controller configuration, transmission clutch and synchronizer calibration, EDC lift-lever/arm potentiometer and valve-solenoid calibration, ground-speed and steering-angle calibration, EHR lever calibration and valve renumbering, and PTO torque-sensor and clutch calibration for the 175 and 190 models.

Factory tool lists identify equipment such as tractor splitting kit 297471, engine support brackets 297617, crankshaft timing pin 297672, hydraulic pressure test kit 292870, plus seal installers, pullers, gauges, and locally fabricated tools with construction drawings.

The manual flags two easy-to-miss repair traps. Disturbing the factory-set timing-pin bushing makes accurate pump timing impossible, while removing reusable pistons through an uncut cylinder ridge can damage the ring lands.

Some late-build fault-code coverage is expressly referred to EST or the Repair Manual CD, including mechanical-transmission models from ACM262853 and Semi-Powershift models from ACM265009. Routine engine-oil change periods and certain cooling-system capacity data are referred to the Operator's Manual. Tractor splitting, suspended-axle, hydraulic, brake, and A/C repair requires proper lifting support, pressure relief, electrical isolation, and refrigerant-handling practices.