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Page Title:
Pressure too low at 600 RPM and in neutral: |
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 TRANSMISSION
b. If pressure is satisfactory at 600 RPM but
low at 2450 RPM check regulating valve I in
PRESSURE CHECK ANALYSIS
control valve.
A. CHECK PORT NO. 1
4. Pressure too high at 2450 RPM and in neutral:
1. Pressure too low at 600 RPM and in neutral:
a. Same as No. 2 above.
a. Leak between pump and control valve.
b. Regulating valve "I" not operating.
b. Misaligned control valve porting plate.
c. Excess oil dump line restricted between
control valve and sump.
c. Regulating valve I stuck open or weak
spring.
B. CHECK PORT NO.2
d. Misaligned inching spool.
NOTE:
e. Clogged supply line to pump.
Get satisfactory results at check port
No. 1 before attempting adjustment
f.
Misaligned pump porting plate.
here.
g. Insufficient pump output.
1. Pressure too low at 600 RPM, 1500 RPM and
2450 RPM and in forward:
2. Pressure too high at 600 RPM and in neutral:
a. Misaligned control valve porting plate or
a. Misaligned gasket between
converter
gasket.
housing and transmission cover.
b. Misaligned inching spool.
b. Misaligned control valve porting plate or
gasket.
c. Regulating valve II stuck open or weak
spring.
c. Restriction between pump and manifold in
control valve.
d. Broken or non-sealing seal rings on forward
end housing.
d. Misaligned control valve gasket.
e. External leak around control valve or valve
e. Misaligned pump porting plate or gasket.
porting plate.
f.
Too many shims.
f. Leaking
past
O-rings
in
forward
end
housing.
3. Pressure too low at 2450 RPM and in neutral:
2. Pressure too high at 600 RPM, 1500 RPM and
a. Same as No. 1 above.
2450 RPM and in forward:
a. Misaligned control valve gasket.
b. Too many shims.
c. Bleed-off ports in forward end housing
clogged.
B-112
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