Cub Cadet 8454 Service Manual page 83

b. Servicing
(A) Rotor and lobe clearance of oil pump
1. Measure the clearance between the outer and in-
ner rotor with a feeler gauge.
2. Measure the clearance between the outer and the
housing with a feeler gauge.
3. If the clearance exceeds the allowable limit, replace
the pump.
Outer Factory
and inner spec.
rotor
Allowable
clearance
limit
Outer Factory
and inner
spec.
housing
Allowable
clearance
limit
(B) Rotor end clearance of oil pump
1. Put a strip of PLASTIGAGE on the rotor and as-
semble the pump.
2. Disassemble the pump and measure the amount
of the flattening with the scale to get the clearance.
3. If the clearance exceeds the allowable limit, replace
the pump.
End Factory
clearance spec.
Allowable
limit
D569-W02 May-2003
K&T Saw Shop 606-678-9623 or 606-561-4983
www.mymowerparts.com
0.10 ~ 0.16 mm
0.0039 ~ 0.0063 in.
0.20 mm
0.0079 in.
0.11 ~ 0.19 mm
0.0043 ~ 0.0075 in.
0.25 mm
0.0098 in.
0.105 ~ 0.150 mm
0.00423 ~ 0.00591 in.
0.20 mm
0.0079 in.
ENGINE
569W2B7A
569W2B8A
569W2B9A
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