Subaru 1600 Service Manual page 103

Top ring
C - N m a r k
~Nmark
Second ring
~
EE
upper rail
Oil ri ng . Spacer
Lower rail
AS·074
Fig. 3·141 Cross section of piston
rings (Nippon Piston Ring)
NOTE:
a. Position the gaps of the piston
rings.
Oil ring lower rail
AS-330
Fig. 3·142 Piston ring gap position
b. Install oil ring as shown in the
figure.
(Riken Piston Ring)
- - - - - - - - Upper side rail
~~,
Stopper pin
I
Lower side rail
((f\Y'-';"
AS-331
(Nippon Piston Ring)
Piston
A5·332
Fig. 3-143 Installation of oil ring
ENGINE
c. Position stopper pins.
Front
AS-333
Fig. 3-144 Stopper pin position
d. The top and second rings are pro-
vided with "R" or "N" mark
as
shown in Figs. 5·84 and 5-85. Be
sure to install the rings with this
mark facing upward.
*
Ring to groove clearance (Refer
to
3-7,
13.)
2) Insert piston pin circlip into the
stopper pin side of the piston.
NOTE:
a. The installed circlip should be
directed as shown in the figure.
Circlip
AS·334
Fig. 3-145 Installed direction of
circlip
b. If the piston pin hole has burrs
made by the circlip end during its
removal, correct so that the piston
pin can be inserted smoothly into
the piston pin hole with fingers.
8. Oil Pump
NOTE:
Replace washers and O-rings with new
ones.
1) Assemble oil relief valve, spring,
two washers and plug in pump body.
3-66
2) Assemble ball, by-pass valve spring
and O-ring in pump body.
3) Assemble oil pump rotor, drive
gear, O-ring and pump body holder in
pump body.
4) Install oil filter.
9. Water Pump
NOTE:
a. Replace the mechanical seal with a
new one.
b. Apply liquid gasket where required.
I) Install the water pump shaft into
pump body with a press.
NOTE:
a. Before pressing, heat the pump
body to 80 to 100°C (176 to
212
0
F).
b. 00 not press the shaft, or the
bearings will be damaged. Press the
bearing outer race.
A7-06S
Fig. 3-146 PreSSing water pump shaft
2) Apply liquid gasket (Fuji Bond D
or equivalent) to the periphery of the
mechanical seal and press the seal
into the pump body with the carbon
washer of the seal facing the impeller.
3) With a thin coat of oil on the
shaft surface, install the impeller
onto the pump shaft with a press.
A7-067
Fig. 3-147 Installing impeller