Peterbilt Model 320 Operator's Manual after 8-07 - Peterbilt Motors ...

PART 8: MAINTENANCE AND SERVICE
Steering Gear Lubrication
Inspection
NOTE: Before removing reservoir cover, wipe outside
of cover so that no dirt can fall into the reservoir.
1. Check the fluid level; add fluid if required.
2. Check fluid for contamination, discoloration, or burnt
smell; correct source of such problems before replacing
fluid & filter.
CAUTION: When adding fluid, be sure to use
fluid of the same type. While many fluids have
the same description and intended purpose,
they should not be mixed due to incompatible
additives.
• If incompatible (insoluble) fluids are
mixed in a power steering system, air
bubbles can be produced at the interface
of the two fluids. This can cause
Steering Gear Lubrication
cavitation, which reduces the lubrication
between moving parts in the gear. This
could result in worn components.
• The mixture of two different fluids, although
harmless to individual internal
components, may initiate a chemical
reaction that produces a new compound
that will attack seals and other internal
components.
• Do not mix different fluids.
Universal Joint Lubrication
Refer to the Spicer Universal Joints and Driveshafts service
manual and lubrication specifications.
Replacement
1. Replace both fluid and filter as per the chart below.
2. Bleed the system if necessary
R(08/07) Y53-6015 – 145 –