Allis Chalmers 312 Technical Data

Allis Chalmers 312 Engine

Engine Model ................ Kohler K301
Engine Type ................ 4-Cycle, one cylinder air-cooled gasoline
Number of Cylinders ................ Single
Displacement, cu.in (L) ................ 29.1 (0.476)
Engine Bore, in (mm) ................ 3.37 (85.6)
Engine Stroke, in (mm) ................ 3.25 (82.6)
Maximum Horse Power, hp (kW) ................ 12.0 (9.0)
Rated Engine Speed, rpm ................ 3600
Fuel System ................ Carburetor
Carburetor Model ................ Kohler/Walbro
Carburetor Type ................ Fixed main jet or adjustable main jet
Lubrication System ................ Splash type
Cooling System ................ Forced-air
Valve Clearance (Intake), in (mm) ................ 0.0079-0.0099 (0.20-0.25)
Valve Clearance (Exhaust), in (mm) ................ 0.0169-0.0189 (0.43-0.48)
Spark Plug Type ................ Champion RH10
Spark Plug Size, in (mm) ................ 0.553 (14.0)
Spark Plug Gap, in (mm) ................ 0.0256 (0.65)
Breaker Point Gap (Nominal), in (mm) ................ 0.020 (0.50)
Fuel Tank Capacity, gal (L) ................ 2.3 (8.5)
Oil Capacity, qt (L) ................ 2.02 (1.90)

Electrical System

Electrical System Rating, Volts ................ 12
Electrical Ground ................ Negative
Charging System ................ Alternator
Alternator Rating, Amps ................ 15
Starter Type ................ Electric
Number of Batteries ................ 1
Battery Voltage, Volts ................ 12

AC 312 Power Take-Off

PTO Location ................ Front
Front PTO Operational Type ................ Independent
Front PTO Clutch ................ Electric or Manual
Front PTO Speed, rpm ................ 3600

Transmission Configuration

Transmission Model ................ Vari-Shift (AC 312D)
Transmission Type ................ Belt-driven variator
Gearbox Type ................ 21F/7R, Four gears with 7-position variator
Number of Forward Gears ................ 21
Number of Reverse Gears ................ 7
Maximum Forward Speed, mph (kph) ................ 5.7 (9.2)
Maximum Reverse Speed, mph (kph) ................ 2.9 (4.7)

Transmission Model ................ Vickers (AC 312H)
Transmission Type ................ Hydrostatic Drive
Number of Forward/Reverse Gears ................ Infinite
Pump Type ................ Variable displacement, reversible piston pump
Motor Type ................ Fixed displacement piston motor
Oil Capacity, qt (L) ................ 1.75 (1.65)
Maximum Forward Speed, mph (kph) ................ 8.1 (13.0)
Maximum Reverse Speed, mph (kph) ................ 3.8 (6.1)

AC 312 Wheels and Tires

Drive Wheels ................ 2WD 4x2
Steering Configuration ................ Front steer
Steering System ................ Manual
Brakes Type ................ Mechanical band
Front Tire Size ................ 16-6.5x8
Rear Tire Size ................ 23-10.5x12
Front Tread Width, in (mm) ................ 28.0 (710)
Rear Tread Width, in (mm) ................ 30.7 (770)

Dimensions and Weight

Wheelbase, in (mm) ................ 48.1 (1220)
Length, in (mm) ................ 74 (1870)
Height (Steering Wheel), in (mm) ................ 43 (1090)
Overall Width, in (mm) ................ 38.5 (970)
Ground Clearance (Front Axle), in (mm) ................ 8 (200)
Ground Clearance (Rear Axle), in (mm) ................ 6 (150)
Weight (312 or 312D with Vari-Shift Transmission), lb (kg) ................ 805 (365)
Weight (312H with Hydro Transmission), lb (kg) ................ 845 (385)

Allis Chalmers 312 Attachments

42" Mower Deck

Mower Deck Type ................ Mid-mount
Number of Blades ................ 3
Cutting Width, in (mm) ................ 42 (1060)
Cutting Height, in (mm) ................ 1.0-4.0 (25-101)
Lift System (AC 314) ................ Manual
Lift System (AC 314D) ................ Electric

48" Mower Deck

Mower Deck Type ................ Mid-mount
Number of Blades ................ 3
Cutting Width, in (mm) ................ 48 (1210)
Cutting Height, in (mm) ................ 1.0-4.0 (25-101)
Lift System (AC 312) ................ Manual
Lift System (AC 312D) ................ Electric