Porsche 924 Workshop Manual page 74

Volume i. engine
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Install piston with
US
1008 A
Remove
and
install
piston
rinJS
.
'Top"
mark must
face piston crown
.
Check
piston ring
end gap
Slide
ring
into
cylinder
about 15 mm
(5/8
in
.
)
Printed
in Germany
Engine
I
Crankshaft
,
Pistons
13
Ring gap new:
0
.
3
-
0
.
5 mm (0
.
012
-
0
.
020
in
.
)
Wear limit:
1,
0
mm
(0
.
039 in.)
Check
piston ring side
clearance.
Play of new
parts
0
.
04
-
0
.
07
mm
(0
.
002
-
0
.
003
in.)
Wear
limit:
0
.
1
mm (0
.
039
in
.
)
Check connecting
rod
bearing clearance
1
.
Remove
connecting
rod
cap,
clean bearing
shell
and conrod journal
.
Measure
clearance
with
Plastigauge.
CAUTION
Do not turn crankshaft
Play
of
new parts:
0
.
02
- 0.
07
mm
(0
.
0008
-
0
.
003
in
.
)
Wear
limit:
0
.
10 mm
(0
.
004
in
.
)
Removing,
Installing
and Checking
Piston
Rings
Checking Conrod
Bearing
Play
13
-
17

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