TM 5-3810-300-24 & P2
C. Install lock washers and stud nuts or cap screws. Tighten to the correct torque.
3.
Assemble Differential and Gear.
A. Rivet the hypoid gear to the case half with new Rockwell-Standard rivets. Rivets should not be heated, but
always upset cold. When the correct rivet is used, the head being formed will be at least 1/81 larger in diameter
than the rivet hole. The head will then be approximately the same height as the preformed head. Excessive
pressure will cause distortion of the case holes and result in gear eccentricity. Tonnage required for squeezing
cold rivets. These pressures are approximate for annealed steel rivets and pressure can be adjusted to suit
individual working conditions.
DIAMETER OF RIVET
TONNAGE REQUIRED
7/16"
22
1/2"
30
9/16"
36
5/8"
45
Final pressure should be held for approximately one minute to make sure the rivet has filled the hole.
Differential case and gear bolts are available for service replacement of rivets. The use of bolts greatly
facilitates servicing these units in the field and eliminates the need for special equipment necessary to correctly
cold upset rivets. Consult chart for service bolt instruction shown with the torque chart on last page of manual.
B. Lubricate differential case inner walls and all component parts with axle lubricant.
DIFFERENTIAL PINION AND SIDE GEAR ASSEMBLY
4-280