Adjustment System Thread Lengths; Maintenance - PREVOST H3-41 Maintenance Manual

FIGURE 23: DRAG LINK ADJUSTMENT SYSTEM
CAUTION
Too little pressure on the clamp can destroy the
threaded adjustment system sleeve.
Apply the recommended torque for clamp nut.
TORQUE: 118-133 lb-ft (160-180 Nm)
Fine adjustment of the drag link length should be
performed exclusively by turning the adjuster
sleeve.
Refer to maintenance information MI19-05 for
detailed draglink length adjustment instructions.

13.1.1 Adjustment System Thread Lengths

When assembling the adjuster sleeve or ball
joint, be sure to assemble the parts within the
following prescribed thread lengths and values.
Lengths V and W should be measured prior to
removal to restore the steering system to its
original state.
FIGURE 24: DRAG LINK ADJUSTMENT SYSTEM
• Dimension V and W should be equal: V/W = 1
• Dimension V: 5/16" (8mm)
• Dimension W: 5/16" (8mm)
To preserve the integrity of the adjusting
system, length V and W should never exceed
5/8"(16mm) ± 1 thread pitch.
Length V and W should be equal within ± 1mm

14. MAINTENANCE

The
maintenance. However, the system should be
kept
performance and trouble-free service. Periodic
inspections should also be made to check for
leakage and all parts for damage or distortion.
When the slightest evidence of dirt, sludge or
water is discovered in the system, disconnect fluid
lines at the power steering gear to drain the
system.
appropriate power steering fluid.
Air in the hydraulic system will cause spongy
action and noisy operation. When a hose has
been disconnected or when fluid has been lost for
any reason, the system must be bled. Bleed
system
"BLEEDING POWER STEERING HYDRAULIC
SYSTEM".
Do not operate the pump without fluid in the
power steering fluid reservoir.
If the steering linkage between the steering gear
and the two front wheels is not properly adjusted,
or if it is bent, twisted or worn, the steering of the
vehicle will be seriously impaired. Whenever a
steering linkage part is repaired, replaced or
adjusted, steering geometry and front wheel
alignment must be checked and necessary
corrections made. Refer to section 10 "FRONT
AXLE" under heading 6: "FRONT WHEEL
ALIGNMENT".
At regular lubrication intervals, the steering
linkage should be thoroughly inspected for worn or
loose components.
After the vehicle has been operated continually
and high mileage figures have been reached,
PA1621 Maintenance Manual All Series | Section revised June 2019
SECTION 14: STEERING
WARNING
power steering system
clean to ensure maximum
Drain and refill
as outlined under
CAUTION
requires little
operating
the system with
paragraph 4:
19