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18 ENGINE
18.4.19
The following steps apply to both oil pumps.
18.4.20
188
Checking the oil pumps
Info
304725-10
Disassembling the autodecompressor
304673-10
Guideline
Piston/cylinder - mounting clearance
Size I
Size II
Wear limit
-
O
Use special tool
to measure the play between the exter
nal rotor and the engine case.
I Feeler gauge (59029041100)
Oil pump
External rotor/engine
case clearance
If the measured value does not meet specifications:
-
Change the oil pump and, if necessary, the engine
case.
-
O
Use special tool
to measure the play between the exter
nal rotor and the internal rotor.
I Feeler gauge (59029041100)
Oil pump
External rotor/internal
rotor clearance
If the measured value does not meet specifications:
-
Replace the oil pump.
-
O
Take lock ring
from the autodecompression shaft and
dispose of it.
0.040 ... 0.082 mm (0.00157
... 0.00323 in)
0.043 ... 0.085 mm (0.00169
... 0.00335 in)
0.120 mm (0.00472 in)
(8
p. 314)
0.20 mm (S 0.0079 in)
s
I
(�
p. 314)
0.20 mm (s 0.0079 in)
s
I
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