Allis Chalmers 6060, 6070, 6080 Tractor Shop Manual (1980–1985)

This 1988 Intertec Publishing aftermarket shop manual covers Allis-Chalmers 6060, 6070, and 6080 tractors with standard two-wheel-drive front axles or front-wheel-drive axle and transfer-gearbox equipment. It is an independent shop manual rather than an Allis-Chalmers OEM factory publication.

PDF Search, Bookmarks, and Page Details

Search and drawing detail: The PDF has searchable OCR text. Embedded bookmarks are only partly usable because several entries lack working destinations. Small labels in the electrical test drawings are clearer when enlarged.

The ZIP contains one printable 67-page PDF. This total includes the opening index page and two metric conversion pages.

Engine, Drivetrain, and Hydraulic Repair Coverage

The selected topics below highlight the main repair areas. Other subjects include hand-adjustable lift-link overhaul and thermostat testing.

• Engine and cooling: Engine removal, cylinder-head and valve work, wet-sleeve service, crankshaft inspection, lubrication-system repair, radiator removal, and water-pump overhaul.

• Fuel and intake: Injection-pump timing and removal, injector fault isolation, nozzle testing and overhaul, TA3101 turbocharger service, and 6080 intercooler testing.

• Clutch and transmission: Model-specific clutch overhaul, main-transmission disassembly, planetary-range repair, bearing preload, and release-linkage adjustments.

• Axles and brakes: 2WD hubs and spindles, FWD planetary hubs and transfer gearbox, differential setup, rear final drives, and hydraulic brake repair.

• PTO assemblies: Removal and overhaul of the model-specific single- and dual-speed units, with clutch-control and selector adjustments.

• Hydraulics and steering: Symptom-based troubleshooting, pump-flow testing, relief-valve checks, steering bleeding, remote-valve overhaul, hitch leak-down testing, and Traction Booster adjustments.

• Electrical components: Delco-Remy alternator and regulator testing plus Lucas and Nippondenso starter diagnosis and overhaul. A complete tractor wiring diagram is not included.

This manual is best suited to experienced mechanics and owners who are comfortable with tractor splitting, press work, precision measurement, and hydraulic test equipment.

Engine, Fuel System, and Cooling

The engine sections provide step-by-step procedures for cylinder-head removal and installation, valve and seat work, injector-sleeve replacement, and internal engine repair. Inspection data covers pistons and rings, connecting rods, main bearings, camshaft bearings, and cylinder sleeves.

Timing-gear and balancer instructions address alignment, backlash, and reassembly. Lubrication coverage includes the oil pump, pressure-regulating valve, and engine oil cooler. Injector-sleeve replacement references the ACTP-2065B swaging tool set.

Injection equipment: Nozzle testing covers opening pressure, spray pattern, and seat leakage, using equipment such as the ACTP-10014 tester. American Bosch and Robert Bosch nozzles must be installed as matching sets. Internal injection-pump calibration requires the appropriate specifications, equipment, and training; pump repair coverage here centers on timing, removal, and installation.

All three models use the AiResearch TA3101 turbocharger. Its section covers shaft-play inspection, disassembly, component limits, and reassembly. Intercooler removal and pressure testing apply only to the 6080.

Cooling-system procedures include water-pump overhaul and impeller positioning. The manual warns against retorquing the cylinder head while the engine is hot because the head gasket can be damaged. It also cautions against resting the turbocharger on its compressor or turbine blades; a bent blade requires replacement.

Clutch, Transmission, PTO, and Axle Work

The main-transmission sections distinguish the 6060's upper-gear synchronization from the broader synchromesh coverage of the 6070 and 6080. Separate procedures address their planetary-range layouts, internal inspection, reassembly, and bearing adjustment.

Clutch drawings distinguish LUK assemblies from C.M.G. units used on some 6060 tractors. Release-finger setup references ACTP-3082 tools for the 6060 and 6070 and ACTP-3103 tools for the 6080. Clutch and flywheel machining limits are included.

PTO coverage separates the 540-rpm assembly used on the 6060 and 6070 from the 6080's 540/1000-rpm unit. Tractor-splitting procedures reference ACTP-3014-1 and ACTP-3014-3 stands.

Differential and final drives: Front and rear assemblies have dedicated overhaul and adjustment instructions. Pinion-depth setup uses the ACTP-3115 gauge set; related procedures cover bearing preload, ring-gear backlash, differential-lock linkage, and rear axle end play.

Brake sections cover master-cylinder overhaul, bleeding, disc inspection, and parking-brake service. Cab and ROPS removal instructions identify lifting arrangements and distinguish early rear-isolator assemblies.

Hydraulic Diagnosis and Steering Variants

The serial-specific steering, clutch-pedal, pump, and filter sections help match installed components to the correct service procedure. Hydraulic testing references the ACTP-1008 flowmeter and distinguishes system relief, hitch safety, discharge-valve leakage, and remote-valve detent checks.

The hitch troubleshooting section explains that an actuated remote valve interrupts oil flow to the hitch. This helps distinguish a control-circuit condition from a suspected pump or lift-cylinder fault.

Control adjustments cover position-control and Traction Booster cables, sensitivity, maximum lift height, and start-of-lift. Solid and telescoping sensing links require different adjustments.

FWD tractors may use Weber, Erber, or Sima steering cylinders. The Sima design is only partly serviceable: internal leakage past its piston seal requires replacement of the complete cylinder. Three different 6080 external lift-assist cylinder designs have separate service sections.

Electrical Tests and Workshop Illustrations

Alternator fault isolation includes rotor, stator, diode-trio, and rectifier-bridge checks. Starter coverage includes armature, field-coil, brush-holder, and mechanical inspection procedures.

The illustrations run through Fig. 151. Examples include the FWD final-drive exploded view (Fig. 6), engine timing-gear layout (Fig. 38), TA3101 turbocharger assembly (Fig. 70), transmission cross-sections (Figs. 92, 93, and 101), pinion-depth setup (Fig. 110), and early/late hitch control-valve assembly (Fig. 138).

Service-data tables provide U.S. customary and metric specifications for torque, capacities, adjustment dimensions, bearing and gear clearances, wear limits, hydraulic tests, and electrical checks. Configuration-specific entries address FWD lubricant allowances and transmission and rear-housing capacities.

Before beginning repair work, support the tractor and removed assemblies with correctly rated equipment, lower raised implements, relieve hydraulic pressure, and isolate the electrical system.

A Preview of Sleeve-Fit and Injector-Test Data

For the covered engines, the cylinder-sleeve section specifies standout above the cylinder block of 0.002–0.005 inch (0.05–0.13 mm). Its inspection instructions relate this measurement to sleeve-flange thickness and block-counterbore depth.

The injection-nozzle testing section gives an opening-pressure range of 3,842–4,016 psi for the covered American Bosch and Robert Bosch nozzles. This accompanies separate spray-pattern and seat-leakage checks.