TM-5-3805-254-14-P-2

TRUCK, DUMP, 20 TON, 6X4, ON-OFF HIGHWAY 71,000 GVW, IHC MODEL F-5070 (CCE)

TECHNICAL MANUAL; OPERATOR’S, ORGANIZATIONAL, DIRECT SUPPORT, GENERAL SUPPORT AND DEPT MAINTENANCE MANUAL (INCLUDING REPAIR PARTS INFORMATION AND SUPPLEMENTAL MAINTENANCE INSTRUCTIONS)

JUNE 1980

TM-5-3805-254-14-P-2 - Page 604 of 894

TRUCK SERVICE MANUAL

PROPELLER SHAFT

General

Loose engine and main transmission to frame

mountings will not affect vertical or horizontal alignment

of the main transmission companion flange with respect

to the flange being 90 degrees to the engine crankshaft

center line.

However, any change from the originally

mounted position caused by loose mountings or

otherwise, will result in the remaining drive line flanges

working at a different angle, which is not permissible.

Therefore, before checking the drive line companion

flange angles, be certain that engine and transmission

mountings are in good condition and are tight.

Propeller shaft alignment checking procedures given

herein will apply to front as well as rear axle drive lines.

The vertical alignment angle of all companion flanges,

whether on the front axle or rear axle drive line, is 90

degrees from a true horizontal minus the number of

degrees of engine declination (engine angle ).

Main Transmission Companion Flange Run-Out

Because the angularity of the complete drive line

must match with the main transmission companion

flange, the flange itself must turn perfectly true, and its

exact vertical angle must be known.

To check for run-out of the main transmission flange,

securely mount a dial indicator to the transmission rear

face.

Position indicator stylus on the flange machined

surface and rotate flange one complete revolution, Fig.

10.

Flange run-out must not exceed .005".

If run-out is

excessive, it may be eliminated by rotating the flange on

the spline.

If excessive run-out still exists, flange is

distorted and must be replaced.