TM-9-2320-273-34

TRUCK TRACTOR, LINE HAUL; LIGHT EQUIPMENT TRANSPORTER; TRUCK CHASSIS; MEDIUM EQUIPMENT TRANSPORTER

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE

DECEMBER 1980

TM-9-2320-273-34 - Page 766 of 801

TM9-2320-273-34

CHAPTER 24

REPAIR OF FRAME

24-1. Scope.

This chapter describes frame maintenance procedures. The following maintenance pro-

cedures are provided:

a. Frame alinement check.

b. Inspection and repair of frame.

24-2. Frame Alinement Check.

NOTE

Make sure truck is parked in a straight line on a level floor so that rear axles are not on

a twist or binding from turning action.

The M915 series vehicles have 3 frame types. The frame shown below is for a 5-ton

truck. While this is not the same as your vehicle, the procedures given below may be

used to check your truck. When checking frame alinement on any truck, use same

bolt, rivet or bracket on each side of truck.

a. Tape paper to floor under each frame crossmember (1) and rear spring seat cap (2, Fig. 24-1).

NOTE

When marking floor at cross member, use front edge of brush guard brackets

(3, fig. 24-1 ).

b. Using plumb bob and pencil, carefully mark point on paper below outer sides of frame at each cross-

member (1) and the two front screws (4) in rear spring seat caps (2, fig. 24-1).

c. Start engine and drive truck off marked paper. Refer to TM 9-2320-273-10.

d. Using chalk line, mark a line between points (1 and 2) and (3 and 4) (fig. 24-2).

e. Using tape measure, measure lines between points (1 and 2) and (3 and 4). If distances are not

between 33 7/8 inches and 34 1/8 inches, frame is bent (fig. 24-2).

f. Using tape measure, find the center point of lines (1 and 2) and (3 and 4) and mark points (5 and 6)

on floor (fig. 24-2).

Change 1

24-1

9. Using chalk line, mark a line between points (5 and 6) (fig. 24-2).