Cylinder - wsm STW37 Workshop Manual

STW34, STW37, STW40, WSM

(5) Cylinder

Replacing Crankshaft Sleeve
1. Remove the used crankshaft sleeve using a special-use puller
set (Code No. 07916-32091).
2. Set the sleeve guide (2) to the crankshaft.
3. Set the stopper (1) to the crankshaft as shown in figure.
4. Heat a new sleeve to a temperature between 150 to 200 °C (302
to 392 °F), and fix the sleeve to the crankshaft as shown in
figure.
5. Press fit the sleeve using the auxiliary socket for pushing (4).
NOTE
• Mount the sleeve with its largely chamfered surface facing
outward.
(1) Stopper
(2) Sleeve Guide
(3) Crankshaft Sleeve
Cylinder Wear
1. Measure the I.D. of the cylinder at the six positions (see figure)
with a cylinder gauge to find the maximum and minimum I.D.'s.
2. Get the difference (Maximum wear) between the maximum and
the minimum I.D.'s.
3. If the wear exceeds the allowable limit, bore and hone to the
oversize dimension. (Refer to "Correcting Cylinder".)
4. Visually check the cylinder wall for scratches. If deep scratches
are found, the cylinder should be bored. (Refer to "Correcting
Cylinder".)
Cylinder I.D. Factory specification
Maximum wear Allowable limit
(A) Top
(B) Middle
(C) Bottom (Skirt)
1-S77
ENGINE
(4) Auxiliary Socket for Pushing
(5) Crankshaft
9Y1211109ENS0126US0
87.000 to 87.022 mm
3.4252 to 3.4260 in.
87.150 mm
3.4311 in.
(a) Right-angled to Piston Pin
(b) Piston Pin Direction
9Y1211109ENS0127US0
KiSC issued 11, 2014 A