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 606 of 894

TRUCK SERVICE MANUAL

PROPELLER SHAFT

General

Auxiliary Transmission Flange Vertical

Alignment

As previously mentioned, the angularity of the

complete drive line must match the main transmission

companion flange; therefore, all remaining flanges must

be checked to determine run-out and vertical alignment.

Procedures required are the same as for checking run-

out and vertical alignment of main transmission

companion flange.

If the auxiliary transmission companion flange is not

properly aligned vertically, check for loose or worn

transmission mountings, as this will position the auxiliary

transmission mainshaft on a horizontal plane that is not

parallel with the main transmission mainshaft and engine

crankshaft, Fig.

14.

This causes the

main transmission output shaft universal joint and the

auxiliary transmission input shaft universal joint to

operate at different working angles, which is not

permissible.

The center lines of the engine main and

auxiliary transmissions must be parallel, Fig.

14.

Rear Axle Pinion Shaft Companion Flange Vertical

Alignment

The center line of the rear axle pinion shaft

should be parallel with the engine crankshaft, Fig.

16.

However, manufacturing may elect to position the pinion

shaft center line of the rear axle at any given angle.

For

instance, the propeller shaft and universal joints can form

what is known as a "broken back" drive line between the

transmission and rear axle.

Fig. 14.

Main and Auxiliary Transmission Center Lines Not Parallel

Fig. 15.

Engine, Main and Auxiliary Transmission Center Lines Parallel

599