Crankshaft Endplay - Onan T260G Service Manual

REAR BEARING END PLATE
LOCK PIN
FIGURE
21.
BEARINGS FOR REAR BEARING PLATE
In the rear bearing plate, install the bearing flush to
1/64 inch
(0.40 mm) below the end of the bore. Be sure
to align the oil holes in the bearing with the oil holes in
the bearing bore (Figure 21). The oil passage must be
least half open. Lubricate bearing after installation.
If head of lock pin is damaged, use side cutters or Easy
Out tool to remove and install new pin. Oil grooves in
thrust washers must face the crankshaft, and washers
must be flat (not bent). The two notches on each washer
must fit over the two lock pins to prevent riding on the
crankshaft (Figure 21).
Lubricate the front main bearing lightly with oil and
insert the crankshaft. With the rear bearing plate gasket
in place and the rear plate bearing lubricated, slide the
thrust washer (grooves toward crankshaft) and plate
over the end of the crankshaft. Line up notches of thrust
washer with lock pins before tightening end plate or
lock pins will be damaged.
Engines shipped from the factory have separate thrust
CRANKSHAFT ENDPLAY
washers and main bearings for both front and rear of
bearing (with attached thrust washer) as shown in
using
the
torque
recommended in ASSEMBLY TORQUES
Figure
22.
Do not add an additional thrust washer to this AND SPECIAL TOOLS, check the crank shaft end play as
front bearing.
shown in Figure 23. If there is too much endplay (see
DIMENSIONS AND CLEARANCES for minimum and
engine' Front bearing replacement part i s a One piece After the rear bearing end plate has been tightened,
BEARING BORE
FRONT MAIN
ALIGN BEARING
AND MATCH
LOCK PINS
OIL HOLES
R E P L A C E M E N T
FRONT MAIN
BEARING
FIGURE 22. FRONT BEARING INSTALLATION
maximum endplay), remove the rear bearing end plate
and add a shim (Figure 21) between the thrust washer
and plate. Reinstall the end plate, making sure the thrust
washer and shim notches line up with the lock pins.
Torque and recheck endplay of the crankshaft.
(REFER TO DIMENSIONS
MEASURE ENDPLAY HERE
AND CLEARANCES)
FIGURE 23. CRANKSHAFT ENDPLAY
10-14