Table of Contents
Advertisement
17
ENGINE
17.4.17
Measuring the piston/cylinder mounting clearance
17.4.18
Checking the oil pumps
Info
The following steps apply to both oil pumps.
17.4.19
Disassembling the autodecompressor
-
Check/measure the cylinder.
-
Check/measure the piston.
The smallest piston/cylinder mounting clearance equals the smallest cylinder bore
diameter minus the largest piston diameter. The largest piston/cylinder mount-
ing clearance equals the largest cylinder bore diameter minus the smallest piston
diameter.
Guideline
Piston/cylinder - mounting clearance
Size I
306589-10
Size II
Wear limit
-
Use special tool
engine case.
I
Feeler gauge (590290411 00)
Oil pump
External rotor/engine case clear
ance
If the measured value does not meet specifications:
-
Change the oil pump and, if necessary, the engine case.
-
Use special tool
nal rotor.
I
Feeler gauge (590290411 00)
Oil pump
External rotor/internal rotor clear
ance
If the measured value does not meet specifications:
-
Replace the oil pump.
-
Take lock ring
304673-10
(�
p. 152)
(�
p. 153)
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)
O
to measure the play between the external rotor and the
(�
p. 229)
I :;;
O
to measure the play between the external rotor and the inter-
(�
p. 229)
I :;;
O
from the autodecompression shaft and dispose of it.
0.20 mm (:;; 0.0079 in)
0.20 mm (:;; 0.0079 in)
154
Advertisement
Table of Contents
