301ENGINE
-
WORK
ON
THE
INDIVIDUAL
PARTS
128
Piston/cYlinder
-
deterrnininllhe
mounti!!l
clearance
- Check/measure the cylinder. (r
p.
126)
- Check/measure the piston. (r
p.
127)
- The smallest piston/cylinder mounting clearance equals the smallest cylinder bore diameter minus the largest piston diameter. The
largest piston/cylinder mounting clearance equals the largest cylinder bore diameter minus the smallest piston diameter.
Guideline
Piston/cylinder - mounting clearance
Size I
0.040
...
0.082
mm
(0.00157
...
0.00323
in)
Size
II
0.043
...
0.085
mm
(0.00169
...
0.00335
in)
Wear
limit
0.120
mm
(0.00472
in)
Chackinl
tha
oil
pum~
•
Info
I Checking of the oil pumps is shown here using the suction pump
as
an
example, but the procedure applies
to
all oil pumps.
Disassamblinllha
autodacomprassor
30045\-10
-
Use
feeler
gauge.
to measure the play between the external rotor and the engine
case.
Oil pump
External rotor/engine case clear-
ance
I S
0.20
mm
(S
0.0079
in)
•
If
the measured value does not comply with the specification:
- Replace the oil pump
or,
as
the case may
be,
engine
case.
-
Use
feeler
gauge.
to measure the play between the external rotor and the internal
rotor.
Oil pump
External rotor/internal rotor clear-
I S
0.20
mm
(S
0.0079
in)
ance
•
If
the measured value does not comply with the specification:
- Replace the oil pump.
- Take lock
ring.
from the autodecompression shaft and dispose of it.
- Pull autodecompression
shaft.
out of the camshaft.
301ENGINE
-
WORK
ON
THE
INDIVIDUAL
PARTS
128
Piston/cYlinder
-
deterrnininllhe
mounti!!l
clearance
- Check/measure the cylinder. (r
p.
126)
- Check/measure the piston. (r
p.
127)
- The smallest piston/cylinder mounting clearance equals the smallest cylinder bore diameter minus the largest piston diameter. The
largest piston/cylinder mounting clearance equals the largest cylinder bore diameter minus the smallest piston diameter.
Guideline
Piston/cylinder - mounting clearance
Size I
0.040
...
0.082
mm
(0.00157
...
0.00323
in)
Size
II
0.043
...
0.085
mm
(0.00169
...
0.00335
in)
Wear
limit
0.120
mm
(0.00472
in)
Chackinl
tha
oil
pum~
•
Info
I Checking of the oil pumps is shown here using the suction pump
as
an
example, but the procedure applies
to
all oil pumps.
Disassamblinllha
autodacomprassor
30045\-10
-
Use
feeler
gauge.
to measure the play between the external rotor and the engine
case.
Oil pump
External rotor/engine case clear-
ance
I S
0.20
mm
(S
0.0079
in)
•
If
the measured value does not comply with the specification:
- Replace the oil pump
or,
as
the case may
be,
engine
case.
-
Use
feeler
gauge.
to measure the play between the external rotor and the internal
rotor.
Oil pump
External rotor/internal rotor clear-
I S
0.20
mm
(S
0.0079
in)
ance
•
If
the measured value does not comply with the specification:
- Replace the oil pump.
- Take lock
ring.
from the autodecompression shaft and dispose of it.
- Pull autodecompression
shaft.
out of the camshaft.
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