Cadillac 60 Series 1963 Shop Manual page 91

5-32
POWER STEERING
DIAGNOSIS CHART (Cont'd.
CONDITION
Hard Steering (Cont'd.)
CAUSE
Low oil pressure due to re-
striction in hoses:
Check for kinks in hoses.
Foreign object stuck in hose.
Low oil pressure due to steer-
ing gear:
Pressure loss in cylinder
due to worn piston ring or
scored housing bore.
Leakage at valve rings, valve
body to worm seal.
Loose fit of spool in valve
body or leaky valve body.
Damaged poppet valve.
Low Oil pressure due to steer-
ing pump:
Loose drive belt.
Low oil level.
Air in the oil.
Defective hoses or steering
gear.
Flow control, valve stuck or
inoperative.
Loose screw in end of flow
control valve.
Pressure p l a t e not flat
against ring.
Extreme wear of cam ring.
Scored pressure plate, thrust
plate or rotor.
Vanes not installed properly.
Vanes sticking in rotor slots.
CORRECTION
Remove kink.
Remove hoses and remove re-
stricting object or replace
hose.
Remove gear from car for dis-
assembly and inspection of ring
and housing bore.
Remove gear from car for dis-
assembly and replace seals.
Replace valve.
Replace valve, see Note 14.
Tighten belt.
Fill reservoir.
Locate source of leak and cor-
rect. Bleed system.
Correct as necessary.
Remove burrs or dirt or re-
place.
Tighten.
Correct.
Replace part.
Lap away light scoring. Re-
place heavily scored parts.
Install properly.
Free-up by removing burrs or
dirt.