Target Audience:
Professional technicians and experienced DIY owners
Market Segment:
Utility and row-crop tractors in the 45 PTO horsepower range
Advantage:
Durable Power Crater engine, low maintenance, and strong parts availability
Engine:
Allis-Chalmers 4.9L Power Crater diesel or gasoline
Transmission:
8-speed or 12-speed with Shift-on-the-Go
Hydraulics:
Draft-sensitive 3-point hitch with position control
Engine:
Complete overhaul and repair procedures for Power Crater engines
Fuel System:
Fuel tank, pump, injectors, and carburetor
Cooling:
Radiator, water pump, and thermostat
Electrical:
Wiring diagrams, starter, generator/alternator
Powertrain:
Clutch, transmission, differential, and final drives
Steering:
Manual and power steering systems
Brakes:
Brake disassembly, adjustment, and overhaul
Hydraulics:
Lift system, controls, and lines
PTO:
Independent PTO repair and adjustment
Sheet Metal:
Hoods, grills, and fenders removal/installation
Maintenance:
Periodic maintenance charts and service schedules
Troubleshooting:
Diagnostic and troubleshooting guides
Overhaul:
Step-by-step engine and transmission overhaul
Repair:
Detailed repair instructions for systems
Specifications:
Tightening torques, clearances, and adjustments
Level:
In-depth factory service level
Illustrations:
Includes diagrams and exploded views
Wiring:
Full wiring diagrams included
Part Numbers:
Referenced in procedures
Disassembly:
Exploded diagrams for parts identification
Compatibility:
Windows, Mac, and mobile devices
Requirements:
Adobe Reader or compatible PDF viewer
Searchability:
Fully searchable text, zoomable
Resolution:
High resolution for clear printing
Printing:
Printable on standard letter size paper
Binding:
Digital (no physical binding)
Paper Type:
N/A - digital download, not printed
Manufacturer:
Allis-Chalmers
Model:
Power Crater (also called Power-Crater)
Type:
4-cylinder overhead valve
Bore x Stroke:
4.00 x 4.25 in (101.6 x 108 mm)
Displacement:
4.9 L (298.7 cu in)
Compression:
Diesel: 16.5:1, Gasoline: 7.6:1
Torque Rise:
N/A - not specified in manual
Diesel Fuel:
Direct injection with injection pump
Gasoline Fuel:
Carbureted
Cooling:
Pressurized liquid cooling
Air Cleaner:
Oil-bath type
Type:
Manual, 8-forward and 4-reverse
Clutch:
Dry twin-disc (coupled with PTO)
Lubrication:
SAE 90 gear oil
Alternative:
12-speed with Shift-on-the-Go
Shifting:
Power shuttle available (if equipped)
PTO:
Independent, 540 rpm standard
Differential Lock:
Manual engage
Wheelbase:
83.5 in (212 cm)
Length:
139 in (353 cm) including 3-point
Width:
71 in (180 cm) standard tread
Height:
68.5 in (174 cm) to steering wheel
Curb Weight:
5,050 lb (2,291 kg) with diesel, less three-point
Ballast:
Wheel weights and front weights available
Crash Test:
N/A - tractor, not road vehicle
Steering:
Manual steering standard, power optional
Brakes:
Drum brakes on individual rear wheels
Rollover Protection:
May be equipped with ROPS (check configuration)
Safety Start:
Neutral start switch
Audio:
N/A - no infotainment system
Three-Point Hitch:
Draft-sensing with position control
Instrumentation:
Temperature, oil pressure, ammeter, tachometer
Engine Oil:
Every 100 hours
Hydraulic Oil:
Every 1000 hours
Air Cleaner:
Service daily or when indicator shows
Engine Oil (Diesel):
API CC/CD, SAE 30 or 10W-30
Engine Oil (Gasoline):
API SE, SAE 30
Transmission/Hydraulic:
Allis Chalmers Power Fluid 821
Final Drive:
SAE 90 gear oil
Coolant:
50/50 conventional
Common Wear:
Hydraulic pump seals, wiring insulation, and PTO clutch
Preventive:
Regular checks of hydraulic filters and valve adjustments
Manufacturer:
Allis-Chalmers Manufacturing Company
History:
Founded in 1901, produced agricultural equipment for over a century
Introduction:
1966, part of the 170 series
Plant:
West Allis, Wisconsin, and Gadsden, Alabama
