Cub Cadet 8454 Service Manual page 76

CHAPTER 2 8454
c. Connecting Rod and Piston
(A) Piston pin bore
1. Measure the I.D. of the piston pin bore in piston
(lengthwise and widthwise of the piston) with a cyl-
inder gauge.
2. If the measurement exceeds the allowable limit,
replace the piston.
Piston pin Factory
bore I.D. spec.
Allowable
limit
(B) Piston pin and brushing clearance
1. Measure the piston pin O.D. with an outside
micrometer.
2. Measure the piston pin busing I.D. with an inside
micrometer.
3. If the clearance exceeds the allowable limit with new
bushing, replace the piston pin.
Piston pin Factory
and spec.
bushing
Allowable
clearance
limit
Piston pin Factory
O.D. spec.
Bushing Factory
I.D.
spec.
(C) Replacing the piston pin bushing
1. Press out the bushing, using a piston pin bushing
replacing tool.
2. Clean the new bushing and the bore and apply oil
to them.
3. Press in the bushing, using the replacing tool.
IMPORTANT:
• Align the oil holes of the connecting rod and the
bushing.
2-54
K&T Saw Shop 606-678-9623 or 606-561-4983
www.mymowerparts.com
25.000 ~ 25.006 mm
0.9843 ~ 0.9845 in.
25.03 mm
0.9854 in.
0.014 ~ 0.038 mm
0.00055 ~ 0.00150 in.
0.15 mm
0.0059 in.
25.002 ~ 25.011 mm
0.98433 ~ 0.98469 in.
25.025 ~ 25.040 mm
0.98524 ~ 0.98583 in.
569W2A2A
569W2A3A
569W2A4A
D569-W02 May-2003