TM-9-2320-273-34

TRUCK TRACTOR, LINE HAUL; LIGHT EQUIPMENT TRANSPORTER; TRUCK CHASSIS; MEDIUM EQUIPMENT TRANSPORTER

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE

DECEMBER 1980

TM-9-2320-273-34 - Page 571 of 801

TM9-2320-273-34

(1) Heat the piston in hot water to expand the piston pin bore.

Lubricate the piston pin; then

install pin (fig. 14-25) through the piston and connecting rod.

(2) Secure the piston pin with the snap rings (one at each end of piston pin).

TA 074381

Figure 14-25. Secure Piston Pin with Snap Rings.

Keep the word TOP on the compression

rings up (toward crown of piston), Do not

scratch the piston when installing the rings.

Do not clamp the rod in a vise unless the

rod is protected by soft wood.

(3) Install the piston rings on the piston. Stagger the gap in the piston rings. (An exploded

view of the piston and rings is shown in fig. 14-10.)

(4) Lubricate the piston rings and crankcase bore.

(5) Install the piston and rod assembly in the crankcase using a standard ring compressor.

(6) Lubricate the crankshaft journals and work it through the connecting rod and crankcase

bearings.

(7) Install the thrust washer (39, fig.

support (37) and a new gasket (36). Secure with

(41 N·m).

In step (8), the

14-10) (with the groove side against the support)

four capscrews (42). Torque capscrews to 30 Ib-ft

NOTE

drive coupling is pressed

on the crankshaft up to the shoulder.

(8) press coupling half (40) and coupling (41) over the crankshaft with a sleeve or pipe.

14-24

CAUTIO N