Which oil the transmission torque converter takes, how often the filters come out, and what the dozer hydraulics are rated for all get settled in one place: the 70 page Fiat-Allis 8-B operator manual PDF, factory publication 70690758 for the 8-B crawler tractor. Lubrication and service instructions fill nearly a third of the book, running from 10 hour daily checks through the 2000 hour yearly services, with fuel and lubricant specifications for every compartment. Factory wiring diagrams trace the electrical system from the current receptacle through dashboard lights, back-up alarm, and fuses, and the bulldozer section covers moldboard, blade tilt, and adjusting rod setup. Set intake valves to 0.012 in. cold, and expect 71.7 psi of oil pressure warm at full speed. Guess on fluids and you buy the repair twice. Bookmarked and text searchable, this PDF is yours once, for as long as the 8-B works your ground.
What's Inside This Fiat-allis 8-B Operator Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety Rules | 4-9 | General Safety Rules, Operating Safety Rules, Maintenance Safety Rules |
| Serial Number Locations, Tractor Break-In and Operating Warnings | 13-15 | Tractor Serial Number, Chassis Identification Plate, Engine Serial Number, Dozer Serial Number, Engine Oil Filters, Fuel Bowl Filter, Transmission Oil Filters, Magnetic Rod, Fuel System, Valve Clearance, Work Area, Machine Lights, Exhaust System, Exhaust Manifolds, Attachments, Blade, Ripper |
| Operating Controls and Instruments | 16-20 | Operating Controls, Instruments |
| Preparation for Use | 21-22 | Engine Crankcase, Transmission Torque Converter, Hydraulic System, Engine Coolant, Fuel Tank, Fuel Cock |
| Operating Instructions | 23-35 | Transmission Shift Lever, Neutral Lock Lever, Dozer Equipment Lever, Fuel Supply Line Cock, Priming Pump, Starter Key |
| Cold Weather Precautions | 36-37 | Cooling System, Antifreeze Solution, Lubricants |
| Lubrication and Service Instructions | 38-57 | General, Lubrication and Service Guide, Fuel and Lubricant Specifications, 10 Hour Services, 50 Hour Services, 100 Hour Services, 200 Hour Services, 500 Hour Services |
| Electrical System | 58-60 | Current Receptacle, Headlight, Dashboard Lights, Rear Floodlight, Indicator Lights, Back-Up Alarm, Fuses |
| Bulldozer | 61-64 | Moldboard, Blade Tilt, Hydraulic Cylinder, Push Beam, Brace, Adjusting Rod |
| Specifications | 65-70 | Engine, Fuel System, Lubrication, Cooling, Power Train, Hydraulic System |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Cab and/or ROPS canopy capscrews | 34-38 kgm | p. 66 |
| Intake Valve Clearance | 0.012 in. | p. 65 |
| Engine Oil Pressure (warm, max speed) | 71.7 psi | p. 65 |
| Thermostat Fully Open Temperature | 198° F | p. 65 |
| Hydraulic System Rated Pressure | 1991 psi | p. 66 |
| Hydraulic Pump Capacity | 30 gpm | p. 66 |
| Track Shoe Width | 15.75 in. | p. 66 |
| Working Weight (Angledozer) | 20944 lbs. | p. 67 |
| Working Weight (Bulldozer) | 20944 lbs. | p. 67 |
Fiat-allis 8-B Common Problems This Manual Covers
Fiat-Allis 8-B dozer blade lifts slowly and drifts down once the hydraulic oil warms up
Check the dozer/ripper hydraulic system fluid level during daily preparation (page 21). Hydraulic oil is filtered by a metal cartridge in the inlet line and a paper cartridge in the return line, with a restricted filter indicator on the dash; the gear pump delivers 30 gpm (114 lt/min) at 2100 rpm and system rated pressure is 1991 psi (140 kg/cm²) (page 66). During break-in, change the return line filter within 100 to 500 working hours (page 14).
Manual Section: Preparation for Use p. 66Engine cranks strong but will not fire after running out of fuel or changing filters
Make sure the fuel cock behind the operator's seat is open, then unscrew the fuel filter air bleed plug about 3 turns and pump the priming pump handle until fuel comes out free of air bubbles; tighten the plug, pump a few more times, then loosen the injection pump air bleed screw and repeat (page 22). Valve to rocker clearance is 0.012 in. intake and 0.020 in. exhaust (page 65).
Manual Section: Fuel System Bleeding p. 22Temperature gauge climbs into the red while pushing heavy dirt in warm weather
The thermostat begins to open at 179°-184°F (81°-85°C) and is fully open at 198°F (94°C); coolant circulates through a vertical-tube radiator with a pusher fan on the water pump shaft (page 65). Keep the cooling system level at the bottom of the filler neck (page 21), and protect it with antifreeze in the ratios on page 36 when temperatures approach 32°F (0°C).
Manual Section: Engine Troubleshooting p. 65Oil pressure gauge drops low at idle once the engine is fully warmed up
Check the engine crankcase oil level during daily preparation (page 21). Oil pressure with the engine warm and at maximum speed should be 71.7 psi (5 kg/cm²); lubrication is forced by a dual gear pump, with a strainer on the suction side and a replaceable filter with relief valve on the delivery side (page 65).
Manual Section: Specifications p. 65Frequently Asked Questions
What is the torque for the cab and/or ROPS canopy capscrews on the Fiat-Allis 8-B?
The specifications on page 66 give the cab and/or ROPS canopy capscrew torque as 34-38 kgm; the ft.lbs. figure beside it is printed as 246-215. p. 66
What is the valve-to-rocker clearance on the Fiat-Allis 8-B engine?
The valve-to-rocker clearance for the engine is 0.012 inches (0.30 mm) for the intake valves and 0.020 inches (0.50 mm) for the exhaust valves. p. 65
What engine oil pressure should the Fiat-Allis 8-B show warm at maximum speed?
The engine oil pressure should be 71.7 psi (5 kg/cm²) when the engine is warm and operating at maximum speed. p. 65
What is the alternator and fan belt sag on the Fiat-Allis 8-B?
Both the alternator and fan belts should have a sag of 5/8 to 3/4 inches (1.5 to 2 cm) when checked with the specified pressure. p. 47
What is the hydraulic system rated pressure on the Fiat-Allis 8-B?
The hydraulic system has a rated pressure of 1991 psi (140 kg/cm²). p. 66
What do I get after purchasing this Fiat-Allis 8-B manual?
Immediate download of the complete 70-page searchable Operator Manual. Access it on any device, from a laptop at your desk to a phone in the field.
Does this Fiat-Allis 8-B manual allow printing?
Yes, printing is unrestricted: a single page, a chapter, or the lot, on letter or A4.
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