TB 9-2320-335-13&P
32-4. FRAME INSPECTION AND REPAIR
This task covers:
a. General Information
d. Preparation and Materials
b. Powertrain Lift Sling Installation
e. Repair Procedures
c. Inspection
f. Powertrain Lift Sling Removal
c.1. Steering Gear Mounting Area Inspection
INITIAL SETUP:
Tools
Equipment Condition (Cont'd)
General mechanic's tool kit:
Engine left splash shield removed (para. 10-23.1).
automotive (Appendix B, Item 1)
Stabilizer bar removed (para. 6-20.1).
Pitman arm disconnected from center link
Materials/Parts
(TM 9-2320-387-24-1).
Cotter pin (Appendix A, Item 16)
Steering shaft disconnected from steering gear
Powertrain lift sling
(TM 9-2320-387-24-1).
(TM 9-2320-387-24-2, Appendix D, Figs. 72, 73)
Oil cooler/brake line bracket removed
Manual References
Steering gear removed (para. 8-20.1).
TB 750-98-23
TM 9-2320-387-10
General Safety Instructions
TM 9-2320-387-24-1
When using power-driven equipment to
TM 9-2320-387-24-2
straighten frames, all personnel must stand clear.
TM 9-2320-387-24P
Shim material must be under jackstands.
TC 9-237
Ensure shoulder bolts have a raised metal 10.9
TM 43-0139
material strength indicator on the head of the
bolts.
Equipment Condition
Do not bulk heat frame rails to remove bends
Vehicle mission equipment removed and
and/or buckles.
stowed (TM 9-2320-387-10).
Vehicle undercarriage clean and free of mud
Maintenance Level
and debris (TM 9-2320-387-10).
General support
Battery ground cables disconnected
(TM 9-2320-387-24-1).
Transmission control module removed
(TM 9-2320-387-24-1).
a. General Information
1.
Frame rails are constructed by arc-welding two C-channels of preformed steel together to form a
box-cross section.
2.
Frame rails are internally reinforced at bolt hole locations by bushings or full cross-section spacers
to prevent channels from collapsing from attaching load.
NOTE
Crossmembers and crossmember brackets must be replaced if
damaged.
3.
The frame is made by bolting two non-identical frame rails to crossmembers. Crossmembers are
held to more stringent dimensional tolerances and must be replaced if damaged.
4.
The type of repairs attempted will vary considerably depending on equipment, type of facilities, and
skill of available personnel. Also the choice of procedures will be influenced by parts supply status
and the operational situation.
5.
Mechanical forces involved in frame straightening can lead to safety problems, which all personnel
must constantly consider.
6.
The removal of frame constraints (loosening of crossmember and bracket fastenings) is critical to
allow enough freedom of movement when straightening frame.
32-2
