SECTION III. 5-TON VEHICLE SERIES FRAMES (REINFORCEMENT).

TB 9-2300-247-40

SECTION III. 5-TON VEHICLE SERIES FRAMES (REINFORCEMENT).

Jack up and evenly support the vehicle

NOTE

frame to gain access to the area to be

The M939 vehicle series have heat-

repaired. Provide firm support on each side

treated frames and will not be

of the defect or the area to be repaired to

repaired by welding.

reduce any stress on framing members to a

minimum.

47.

Defect. Frame Rail Reinforcement Failure.

Figure 30 illustrates a failure in the lower flange of the

Perform the necessary removal of

reinforcement plate on the main side rail.

components, service lines, electrical wiring,

etc., as required to gain access to the

Thoroughly clean vehicle frame of all oil,

proposed repair.

grease, dirt, and debris.

To reduce the tendency of the defect

Perform general vehicle frame in section as

(crack) to increase, drill 3/16-inch diameter

specified in Section I.

hole at the terminal point of the crack at the

flange portion of the framing member.

Perform vehicle frame alignment inspection

as specified in Section III.

Figure 28. Reinforcement Channel in Position for 2-1/2-Ton Truck Frame