Cadillac 60 Series 1963 Shop Manual page 496

BODY
16-27
VACUUM DOOR LOCK DIAGNOSIS CHART (Cont'd.)
CONDITION
11. System will not hold vac-
uum for 48 hours.
12. Lock(s) inoperative with
front door closed but op-
erates with door open.
13. Door selector valve leaks.
14. Storage tank leaks.
15. Actuator assembly inop-
erative.
16. Remote valve leaks.
APPARENT CAUSE
Excessive leakage in any one
of the following units can be
the cause:
a. Remote valve,
b. Door valves (2).
c. S t o r a g e tank and check
valve.
d. That part of the harness
a s s e m b l y that contacts
these components.
Door valve vacuum supply hose
pinched at front body hinge
pillar on side affected.
Pinched vacuum supply hose
(Red) at affected valve. If air
leak stops, valve is defective.
Turn engine off and disconnect
manifold to storage tank supply
hose at tank check valve; then
pinch storage tank to remote
valve supply hose. Actuate
either door lock selector to
equalize pressure in balance of
system. If air continues to
leak, tank is defective.
Connect hose or check for
pinched hose at front door
hinge pillar conduit, at rear
door hinge pillar conduit, or at
remote control valve B, then
actuate door lock selector
valve. If actuator does not op-
erate, actuator is defective.
Check remote valve for pinched
or disconnected hose(s). If bal-
ance of system is checked and
found to be in satisfactory con*
dition, replace remote valve
with new part. If system then
operates properly, original re-
mote valve was defective.
REPAIR
Actuate system through sev-
eral lock and unlock cycles,
and recheck leakage.
Isolate leaking component and
replace.
IMPORTANT: If a door valve
is found to be leaking, tighten
screws on back of valve, then
recheck valve. If valve con-
tinues to leak, replace valve.
Check for pinched hose at af-
fected door at conduit.
Replace affected s e l e c t o r
valve.
IMPORTANT: If selector valve
leaks, first tighten screws on
back of valve, then recheck
valve. If valve continues to
leak, replace valve assembly.
Replace vacuum storage tank.
Replace actuator assembly.
Replace remote control valve
assembly.