CHAPTER 1. GENERAL

TB 9-2300-247-40

CHAPTER 1. GENERAL

SECTION I. GENERAL

for the purpose of frame repair. See

Purpose. This bulletin provides information to

Section IV, paragraph 10.

field maintenance personnel in the various methods of

Procedures for frame repair vary with the

tactical wheeled vehicle frame repair.

different types and locations of frame defect

of failure. The methods and success of

Scope.

vehicle frame repair is dependent to a great

degree on the skill and experience of the

This bulletin contains descriptions, methods

technician performing the work.. Many

and procedures for the inspection and the

frame repair procedures begin with very

repair of cracked vehicle side rails, vehicle

simple steps.

Often, removal and

frame members, broken welds, bolts, and

replacement procedures in the area where

rivets and the fabrication of vehicle frame

the frame requires repair are left to the

reinforcement members.

experience of the mechanic.

Other

component removal and replacement

The following family of wheeled vehicles are

procedures are strictly governed by the

included as a part of this bulletin: CUCV

procedures in the specific maintenance

Series Vehicles, 3/4 to 1/4 Ton HMMMV

manual for the vehicle frame under repair.

Series Vehicles, 1-1/4 Ton 2-1/2-Ton

Most types of cracked frames may be

Series Vehicles 5-Ton Truck Series

repaired provided the crack is located in an

Vehicles.

accessible position allowing the repair to be

performed without complete disassembly of

Vehicle frame repair is restricted to the

the vehicle. All vehicle frame repairs must,

criteria specified in Section IV.

Any

at a minimum be equal in strength to that of

proposed repair which is not specifically

the original frame.

specified in Sections IV and V, or not

included as part of a work procedure in a

Reporting of Errors. The reporting of errors,

specific vehicle maintenance manual, is not

omissions, and recommendations for improving this

authorized and will not be considered.

publication by the individual user is encouraged. Reports

should be submitted on DA Form 2028 (Recommended

Frame repairs are allocated to General

Changes to Publications and Blank Forms) and

Support (GS) and depot level maintenance

forwarded direct to: Commander, U.S. Army Tank-

activities. However, vehicles will not be

Automotive Command, ATTN.: AMSTA-MB, Warren MI

evacuated to a maintenance depot solely

48397-5000.

SECTION II. DESCRIPTION OF VEHICLE FRAMES

assembled using bolts and rivets.

Most welding

Truck Frames. Truck frames are generally

processes destroy the heat treatment properties of the

constructed of pressed steel channel side members and

vehicle framing members, causing the metal adjacent to

steel crossmembers reinforced and stiffened with gusset

the weld to be weakened. As a result of the destructive

plates and braces. In general, frames are assembled by

properties of welding on heat-treated steel, welding of

bolting, riveting, and with welded joints, or with a

heat-treated 5-ton truck framing members is prohibited

combination of all these methods.

except as otherwise specified in Chapter 5.

Heat-Treated Steel Frames. Heat-treated steel

frames, such as those used in 5-ton trucks are