Hudson 1948 Commodore, Service Manual

Page: 132 / 147

127 BODY MANUAL
REFERENCE
CONDITION HYDRAULIC ELECTRICAL MECHANICAL
1. Top will operate in one di-
rection only
(A) Top control valve shaft and
rotor not assembled properly. (A) Top control valve switch
contacts at one point only. (A) Top valve control rod
improperly adjusted.
2. Top will not operate. (A) Foreign material in fluid
lines.
(B) Broken port plate in control
valve.
(C) Broken or disconnected
fluid line.
(D) Defective top operating
cylinder.
(E) Pump has lost "prime".
(A) Battery low.
(B) Motor solenoid not operating.
(C) Pump motor in operative.
(D) Short or ground in switch
circuit.
(E) Switch connection loose or
broken.
(F) Defective ground connection
to motor.
(G) Defective circuit breaker.
(H) Connection from battery to
solenoid defective.
3. All units operate
slowly.
(A) Pump pressure relief valve
stuck.
(B) Crimped fluid lines.
(C) Internal leakage in top
operating valve.
(D) Improper hydraulic fluid in
system.
(A) Low battery.
(B) Oilite bearing in top of
motor binding.
(A) Units possibly misaligned.
4. Window raises when top
control valve is operated.
(A) Defective window cylinder
solenoid valve.
(A) Window switch shorted.
(B) Battery wire in contact with
cylinder wire.
5. One window will not
fully close.
(A) Insufficient hydraulic fluid.
(A) Glass run channel mis-
aligned.
(B) Stops improperly adjusted.
(C) Glass misaligned.
6. Window lifts operate down-
ward slowly.
(A) Pump pressure relief valve
stuck.
(B) Hydraulic fluid containing
sludge.
(C) Improper hydraulic fluid in
system.
(A) Units possibly binding.
(B) Window run channels
excessively wet.
(C) Window lift spring broken.