Power Director: Transmission is controlled by means of a range control knob and a gear shift lever. The range knob is located below the steering wheel, pushing it forward puts the tractor in high range, pull it back engages low range. The gear shift selects one of four forward gears, or reverse. The tractor must be stopped and clutch used to change gears or range.
Weight
Weight specifications
Weight
9,500 lb shipping
Shipping
9,500 lb
Ballasted
11,700 lb
Dimensions
Dimensions specifications
Wheelbase
96.1 in
Length
160.6 in
Width
91.6 in
Height
106.6 in unspecified
Front axle clearance
21.3 in
Rear axle clearance
26.8 in
Capacities
Capacities specifications
Fuel tank
52 gal
Hydraulics
Hydraulics specifications
Pump flow
no record
Hitch
Hitch specifications
Rear hitch category
III/II
Rear lift capacity
no record
PTO
PTO specifications
Rear PTO
independent
Rear PTO speeds
1000
Chassis
Chassis specifications
Drive
2WD
Steering
Power steering
Brakes
Band actuated disc brakes
Cab
Open operator station
Tires
Tires specifications
Front
7.50x20
Rear
18.4x34
Electrical
Electrical specifications
System voltage
12 V
Batteries
2
Battery capacity
95 Ah
Charging
Delco-Remy generator
Charging output
32 A
Ground
negative
Production
Production specifications
Total built
1,129
Price new
$5,700 (1964)
Factories
West Allis, Wisconsin, USA
Built by
Allis Chalmers
Serial numbers
Serial number on the left side of the Allis-Chalmers D21, stamped into the flange near the starter mounting.
First serial number by year
Year
First serial
1963
100 (Series I)
1964
1417 (Series I)
1965
2079 (Series I)
Final
2129 (Series I)
1965
2130 (Series II)
1966
2408 (Series II)
1967
2863 (Series II)
1968
3777 (Series II)
1969
4498 (Series II)
Final
4609 (Series II)
Literature
New D21 Tractor (FE-131/637) 1963
Operating Instructions Model D21 Tractor (TM-346A) 1963