Cub Cadet 8454 Service Manual page 82

CHAPTER 2 8454
E. LUBRICATING SYSTEM
a . Checking
(A) Engine oil pressure
1. Remove the oil pressure switch and install adap-
tors and pressure tester.
2. Start the engine and run it until it is warmed up, and
measure the oil pressure both at idling and rated
speed.
3. If the oil pressure is less than the allowable limit,
check the amount of oil, oil filter, oil pump relief
valve, oil passages and oil clearance.
Engine At idle
Factory
speed
spec.
oil pres-
sure
At rated Factory
spec.
speed
Allowable
limit
(Reference)
Tightening Oil
torque pressure
switch
(B) Oil filter and relief valve
1. Drain the engine oil and remove the oil filter to check
it.
2. Check the relief valve for dirt, and the seat (2) and
ball (1) for damage.
3. If damaged, replace.
4. Check the free length of spring (3).
5. If it is less than the allowable limit, replace it.
Spring free Factory
length spec
Allowable
limit
NOTE:
• Install the relief valve cover with the mark up.
Tightening Relief
torque cover
2-60
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more than 49 kPa
2
0.5 kgf/cm
7.11 psi
294 ~ 441 kPa
2.5 ~ 4.5 kgf/cm 2
35.6 ~ 64.0 psi
245 kPa
2.5 kgf/cm 2
35.6 psi
14.7 ~ 19.6 N·m
1.5 ~ 2.0 kgf·m
10.8 ~ 14.5 lbf·ft
35 mm
1.38 in.
30 mm
1.18 in.
32.4 ~ 36.3 N·m
3.3 ~ 3.7 kgf·m
23.9 ~ 36.8 lbf·ft
(1) Relief Valve Ball
(2) Relief Valve Seat
569W2B5A
569W2B6A
(3) Relief Valve Spring
D569-W02 May-2003