5. Fill the power steering reservoir with approved
power steering fluid to the FULL COLD mark.
See Table 1.
6. Start the engine and operate it at idle. Turn the
steering wheel to full lock left and right to adjust
the fluid level and remove any existing air from
the power steering pump and gear. Recheck the
fluid level. Add fluid as needed. The system is
properly bled when the steering pump does not
labor when turning the wheel.
7. Check for leaks in the power steering system,
and repair as needed. Top off the power steering
fluid level as needed.
Approved Power Steering Fluids
Fluid Type
*
Approved Fluid
*
Automatic Transmission
Fluid
Dexron
®
II
Dexron
®
III
Heavy-Duty Engine Oil
IMPORTANT: Do not use
heavy-duty engine oil in
vehicles built from
November 4, 2002.
Shell Rotella T
Shell Rotella T
Chevron
Chevron Custom
Mobil Super
Texaco
Union
Union
Unocal Guardol
30W
SAE 30
10W-40
10W-40
10W-40
10W-40
10W-40
15W-40
15W-40
*
Do not mix fluid types. Refer to the text in this group for a detailed warn-
ing statement.
Table 1, Approved Power Steering Fluids
46–03 Power Steering Fluid
Level Inspection
1. Apply the parking brakes and chock the tires.
2. With the engine cool, use a shop towel or clean
rag to clean the area around the power steering
reservoir fill cap. See Fig. 1 or Fig. 2. Twist the
cap counterclockwise to remove it. Check the
cold power steering fluid level. The level should
be between ADD COLD and FULL COLD with
the engine off.
3. Start the engine and run it at idle until it reaches
operating temperature. See Table 1 for recom-
mended power steering fluids.
On Century Class Conventionals, remove the
dipstick and check that power steering fluid is
between ADD HOT and FULL HOT. If the fluid
level is low, add enough fluid to bring the level
up to the FULL HOT mark on the dipstick.
On Argosy COEs, check that power steering fluid
is between the ADD HOT and FULL HOT lines
on the transparent reservoir. If the fluid level is
low, add enough fluid to bring the level up to the
FULL HOT mark.
Remove the chocks.
46–04 Power Steering Gear
Lubrication
Sheppard
Sheppard power steering gears manufactured with-
out grease fittings are maintenance-free. If the power
steering gear has no grease fitting, it requires no pe-
riodic lubrication.
Sheppard power steering gears with grease fittings
must be lubricated periodically.
1. Wipe off any debris from the bearing cap grease
fitting. See Fig. 3.
2. Using a hand-type grease gun, apply multipur-
pose chassis grease until grease starts coming
out of the bearing cap dirt-and-water seal.
f460296a
1
05/28/93
1. Bearing Cap Grease Fitting
Fig. 3, Sheppard Bearing Cap Lubrication
Steering 46
Century Class Trucks Maintenance Manual, November 2002 46/3
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