DISASSEMBLY AND ASSEMBLY
OTC Model 1790 Transmission Jack 1
a) remove front drive shaft
b) remove drive axles (front)
Drain the oil from the front axle housing.
Remove the bolts and brake line guards (3)
from both sides of the axle housing.
Remove brake lines (2) and (4) from the ma-
Remove the bolt and nut and tee bracket (1)
from the machine.
Fasten tool (A) to differential (5) as shown.
Remove the bolts and use two ½"-13 NC forc-
ing screws to loosen differential from the axle
Remove the differential from the machine. The
weight of the differential is 204 kg (450 lb.).
NOTE: It can be necessary to make an adjustment to
tool (A) to remove the differential from under the
OTC 1790 Transmission Jack
Fasten differential ( 1 ) to tool (A) as shown.
Make sure the O-ring seal is installed around
the differential carrier and put clean oil on it.
Put differential ( 1 ) in position in the front axle
housing. If necessary use two ¾- 10 NC guide
bolts to keep the differential in alignment.
Install bolts (6) and tighten them to a torque of
270 ± 25 N-m (200 ± 20 lb. ft.).
Install tee bracket (2) on the differential.
Install brake lines (3) and (4). Remove (bleed)
the air from the brake system.
Install brake line guards (5).
Fill the axle housing and final drives with clean
a) install axles (front)
b) install front drive shaft