Service Manual

2. The piston and crankshaft may now be
removed from the cylinder. See Fig. 4-32.
lower diameter of the crankshaft is 24.959
24.980 (.9826 .9835).
Figure 4-32
3. Remove the piston rings. The bottom ring is
for oil control, the second ring is cast iron
for quick seating and the top ring is chrome
plated for long wear.
4. The rings are marked with the letter
“N”.
The “N” should face up on correct installa-
tion. See Fig. 4-33.
26.015-26.025
mm
in.
1.024-1.025
Figure 4-33
INSPECTION AND RECONDITIONING
Crankshaft
1. Inspect for a bent crankshaft. The limit on
crankshaft deflection (1/2
of a total indi-
cated run-out on a dial indicator) is
.05 mm
(.002 in).
2. Measure the diameter of the crankshaft rod
journal. The journal diameter should be
25.99 26.00 mm. (1.023 1.024 in.) See
Fig. 4-34.
3. The upper diameter of the crankshaft is
21.960 21.980 mm (.8646 .8654). The
Rod Journal
Diameter
25.99-26mm (1.023-1.024 in.)
Figure 4-34
Connecting
Rod
1. Measure the inside diameter of the con-
necting rod crankshaft bearing. The diam-
eter should be 26.105 26.025 mm (1.024
1.025 in.) See Fig. 4-35.
Connecting Rod
Crankshaft Bearing
3;
Figure 4-35
2. Measure the inside diameter
of the con-
necting rod piston pin bearing. The diam-
eter should be 14.989 14.981 mm (5901
,590 in.) See Fig. 4-36.
14.981-14.989 (.590- -.5901 in.)
Piston Pin Bearing
Diameter
Figure 4-36
28