This task covers:
a. Frame Inspection
b. Frame Measurement
l Truck parked on level surface in
l Datum gages
l Steel tape measure
l Tram gage
l MOS 44B (1)
Inspect suspension and axle components for looseness, improper alinement, and damage.
Tighten, realine, or replace components as needed.
Ensure that frame is measured along all lines shown on Illustrations on
pages 9-4 and 9-5. The following procedure should be used when
performing these measurements.
A tolerance of plus or minus (±) 0.12 in (3 mm) Is acceptable on
frame measurements unless otherwise stated.
Bolts, nuts, studs, and nonremovable plugs are shown on illustrations
as solid objects. Holes are shown as outlines.
Ensure that any drivetrain, exhaust, or suspension components are
removed as required to obtain direct point-to-point measurements.
Measure all bolts, nuts, studs, and nonremovable plugs from center-to-center.
On bottom view illustrations, measurement points at a 90 degree angle to centerline
should be an equal distance from centerline,
± 0.12 in. (± 3 mm). Diagonal measurements
should be the same, ±0.19 in. (±5 mm), and should cross at centerline.
The datum line is an imaginary line parallel to floor at lowest point on
Measure all dimensions on side view illustrations from center-to-center. Attach datum gages at
points on frame to be measured. Measure all length dimensions parallel to datum line.
Measure all height dimensions at a 90 degree angle to datum line.
9 - 3