Operation and maintenance manual

Section 100-0010

SM 1372 Rev 1 2-00

SM - 1859

CHASSIS - Frames

DESCRIPTION

The front and rear frames are all-welded high grade

steel fabrications, with rectangular box section beams

forming the main side and cross-members. These

heavy duty structures are designed to withstand the

severe loadings incurred when operating over rough

terrain.

The front frame houses engine, transmission,

hydraulic and fuel tanks and carries the cab, front

suspension and front drive axle. The rear frame

carries the body, body cylinders, rear suspension

system and the rear drive axles.

Inter-frame oscillation is provided by a robust

cylindrical coupling, carried on large nylon bushes.

Steering is by frame articulation to 45 degrees either

side by two widely spaced vertical pivot pins in taper

roller bearings.

Note: For details on the articulation and oscillation

pivot and procedures for separating the front and rear

frames, refer to Section 100-0020, ARTICULATION

AND OSCILLATION PIVOT.

MAINTENANCE

Note: This section covers maintenance of the front

and rear frames only.

Inspection

Inspect the frames and attached parts at intervals not

exceeding 250 hours for cracked or broken welds and

bending of the frame. Any defects found should be

repaired before they progress into major failures.

Fig. 1 - General Arrangement of Frame Assemblies