46–01 Steering Driveline
Lubricating
Wipe the steering driveline grease fittings clean. See
Fig. 1
,
Fig. 2
,
Fig. 3
, and
Fig. 4
. Using a pressure
gun, apply multipurpose chassis grease sparingly to
the universal joints and slip-joint splines. For an FLA
or an FLB, lubricate the slip-joint splines only when
the cab is in the operating position. Turn the front
wheels to the left for better access to the driveline.
46–02 TRW Manual Steering
Gear Lubricant
Checking, Model 503
1.
Remove the fill plug from the top of the steering
gear housing. See
Fig. 4
.
WARNING
Use only an approved lubricant. Failure to add ap-
proved lubricant could adversely affect steering
ease under certain conditions and could hamper
vehicle control. This could lead to an accident re-
sulting in injury or property damage.
2.
Check the lubricant level. If low, add enough lu-
bricant to bring the level to within 1/2 inch (13
mm) of the fill hole. Use hypoid gear oil API ser-
vice classification GL–5 (with no zinc additive). At
operating temperatures continuously above 30°F
(–1°C) use viscosity grade SAE 90. At operating
temperatures continuously below 30°F (–1°C)
use viscosity grade SAE 75.
3.
Install and tighten the fill plug 14 lbf·ft (19 N·m).
46–03 TRW Manual Steering
Gear Lubricant
Changing, Model 503
NOTE: In climates with extreme temperature
changes, lubricant should be changed every six
months.
1.
While the steering gear lubricant is still warm,
remove the steering gear drain plug and drain
the old lubricant. Lubricant will drain faster if the
fill plug is also removed. See
Fig. 4
. After all lu-
bricant has drained, install and tighten the drain
plug 14 lbf·ft (19 N·m).
f460005a
1
2
05/28/93
1.
U-Joint Grease Fitting
2.
Steering Column End Yoke Pinch Bolt and Nut
Fig. 1, Steering Driveline Upper Universal Joint
f460006a
1
05/28/93
1.
Intermediate Shaft U-Joint Grease Fitting
Fig. 2, Steering Driveline Intermediate Universal Joint
Steering
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Heavy-Duty Trucks Maintenance Manual, November 2002
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