Medium Duty Operator's Manual - Peterbilt Motors Company

Steering and Driveline
Preventive Maintenance
If these checks do not reveal the problem, or if you correct
them and still have a steering problem, take your truck to an
authorized Peterbilt Dealer for evaluation.
Fluid Level and Refill
RESERVOIR
Have the power steering fluid and filters changed at an
Authorized Service Center.
• Check and completely change the fluid level according to
Table 1, “Recommended Maintenance Intervals,”
Page 150. Use the following procedure:
NOTE: Before removing reservoir cover, wipe
outside of cover so that no dirt can fall into the
reservoir.
The power steering fluid reservoir is attached to an underhood
bracket on the LH side of the engine.
• Maximum / Minimum level is marked on the reservoir.
These same levels are also marked by lines on the dipstick
in the reservoir.
• There are two ways to check whether the power steering
fluid is at its proper level. Both checks are with the
engine NOT running.
Power Steering Fluid Reservoir
02603
1. If you check the fluid with the engine and steering system
COLD the fluid level should be at/or above the Minimum
indicator level and should generally not exceed the
middle point between Maximum and Minimum level indicators.
2. If you check the fluid with the engine and steering system
WARM the fluid should NOT exceed the Maximum
level indicator and should generally not drop below the
middle point between the Maximum and Minimum level
indicators.
– 238 – Y53-6008A Medium Duty (R05/09)