Cadillac 60 Series 1963 Shop Manual page 62

POWER STEERING
5-3
Filler Cap
Pressure Plate
Oil Reservoir
End Plate
Return Tube
Pressure Union
Cross Over Intake Port
Drive Shaft
Shaft Seal
Thrust Plate
Rotor and Vanes
Flow Control Valve
Fig. 5-4 Steering Pump Cut-Away View
The oil reservoir provides oil storage space and
a means of directing return oil back to the pick-up
passage of the pump.
There are two bore openings at the rear of the
pump housing. The larger of these openings con-
tains the pump ring, pressure plate, thrust plate,
rotor and vane assembly, and end plate. The
smaller opening contains the pressure line union,
flow control valve, and spring. The flow control
orifice is part of the pressure line union. A pres-
sure relief valve inside the flow control valve
limits pump pressure to 1100 to 1200 psi on 60
and 62 series and 1250 to 1275 psi on Seventy-
Five series and Commercial Chassis.
SERVICE INFORMATION
Four factors affect power operation of the
steering system: fluid level and condition, drive
belt tension, pump pressure and steering gear
adjustment. These should always be checked be-
fore any major service operations are performed.
Conditions such as hard or loose steering, road
shock, or vibrations are not always due to steer-
ing gear or pump, but are often related instead
to such factors as low tire pressure, and front
end alignment. These factors should be checked
and corrected before any adjustment of the steer-
ing gear is made.
1. Checking Fluid Level
1. Run engine to normal operating temperature,
then shut engine off. Remove reservoir filler
cap and check oil level on dipstick. Level should
be up to " F u l l " mark on dipstick.
2. If oil level is low, add Cadillac Power Steer-
ing Fluid to proper level on dipstick and replace
filler cap.
NOTE: When adding less than one pint of
fluid, Hydra-Matic fluid may be used. When
adding larger quantities or when making a com-
plete fluid change, always use special power
steering fluid available from factory Parts
Warehouses.
3. When checking fluid level after the steering
system has been serviced, air must be bled from
the system. Proceed as follows:
a. With wheels turned all the way to the left,
add Cadillac Power Steering Fluid to "Add" mark
on dipstick.