Power Steering Fluid Condition; Power Steering Fluid Visual Inspection; Power Steering Fluid Change; Power Steering Fluid Reservoir - PREVOST H3-41 Maintenance Manual

SECTION 14: STEERING
overhaul of the various steering units will be
required. General overhaul procedure normally
requires removal of the entire assembly, cleaning
and inspection of all parts and final assembly.
Careful inspection of all parts during overhaul is
very important and must not be neglected.
Lubrication fittings must all be cleaned before
applying lubricant. Moreover, always be sure the
equipment used in applying lubricant is clean.
Every precaution should be taken to prevent entry
of dirt, grit, lint or other foreign matter into lubricant
containers. Replace fittings that have become
broken or damaged. Lubrication intervals, as well
as the recommended lubricants for the steering
components, are given in the "LUBRICATION
AND SERVICING SCHEDULE" in Section 24 of
this manual. The intervals given in the schedule
are recommended for normal service. More
frequent intervals may be required under severe
operating conditions.
14.1 POWER
CONDITION
The power steering fluid reservoir is filled with
Automatic Transmission Fluid (ATF) (refer to
FLUIDS & LUBRICANTS TABLE in Section 24:
Lubrication & Servicing). A periodic power
steering fluid change is not required. Change the
power steering fluid only if the steering gear unit
was repaired, replaced or if the visual inspection
of the fluid shows that a change is necessary.
MAINTENANCE
Check power steering fluid condition at the
intervals specified by the Lubrication And
Servicing Schedule
LUBRICATION & SERVICING

14.1.1 Power Steering Fluid Visual Inspection

The color of the power steering fluid can give you
an idea of the fluid's condition and tell you that it
needs to be changed. ATF gets darker with age,
this process doesn't necessarily indicate a
problem. If the fluid has darkened significantly, it
may indicate that the power steering system is
running hotter than normal and the fluid is
overheating. Troubleshoot the overheating and
have the fluid changed.
Get a sample of power steering fluid using the
gauge located on top of the reservoir. Wipe it on a
20 PA1621 Maintenance Manual All Series | Section revised June 2019
STEERING FLUID
in Section 24:
clean white rag. Check the fluid color, smell and
consistency. Use the color chart below to
determine if the power steering fluid needs to be
changed.

POWER STEERING FLUID CONDITION

COLOR CHART
Translucent red
New fluid
Semi-translucent dark
red/light brown, thick oily
consistency, relatively
odorless
Normal fluid
Opaque dark brown,
appears to be thin
Dirty, change fluid
Dark brown/black with burnt
smell
Bad condition
(internal damage may have
already occurred)

14.2 POWER STEERING FLUID CHANGE

Please, refer to Oil Change and Bleeding in "RB
Robert Bosch Servocom - Service Manual (8090)"
found on your Technical Publications USB flash
drive.
Replace the filter element simultaneously with the
fluid change. See
Replacement.
13.3.2 Filter Element