Front I-Beam Axle Drag Link - PREVOST H3-41 Maintenance Manual

SECTION 14: STEERING
responsible for product quality. Figure 31 shows
approximate location of steering lubrication
fittings.
MAINTENANCE
Drag Link (with
Suspension)
Drag link ends (ball joint) are provided with
grease fittings for pressure lubrication.
To prevent corrosion from forming around the
ball pin (particularly the drop type ball joint as
it is exposed to dirt and water), remove the old
grease bead and assure sufficient grease is
applied to purge the old grease and fill the
joint and dust seal.
MAINTENANCE
Intervals below are recommended for normal
service. More frequent intervals may be applied
under severe operating conditions.
The lubrication fittings (see Figure 31 ) should
be serviced at the intervals specified by the
Lubrication And Servicing Schedule in Section
24: LUBRICATION & SERVICING.
(1) Drag Link Ends: Lubricate at four fittings,
two at each end of link with good quality
lithium-base grease NLGI No. 2 (Shell
Retinax LX or equivalent).
(2) Relay Rod Ends: Lubricate at two fittings,
one at each end of rod with good quality
lithium-base grease NLGI No. 2 (Shell
Retinax LX or equivalent).
(3) Tie Rod Ends: Lubricate at four fittings,
one at each end of both tie rods, with good
quality lithium-base grease NLGI No. 2
(Shell Retinax LX or equivalent).
(4) Steering Knuckle (swivel assembly):
Refer to DANA SPICER MAINTENANCE
MANUAL NDS AXLES Lubrication and
Maintenance" for more details.
(5) Idler Arm and Bell Crank: Lubricate at two
fittings, one on the idler arm and the other
on the crank bell, with good quality lithium-
base grease NLGI No. 2 (Shell Retinax LX
or equivalent). Apply grease gun pressure
to the fitting until lubricant appears at the
top seal.
24 PA1621 Maintenance Manual All Series | Section revised June 2019
Independent Front
(6) Upper A-Arm Ball Joint: Lubricate at
fitting until you see some grease on the
relief valve nearby, with good quality
lithium-base grease NLGI No. 2 (Shell
Retinax LX or equivalent).
FIGURE 31: LUBRICATION FITTINGS LOCATION

14.6.2 Front I-beam Axle Drag Link

On vehicles equipped with I-beam front axle, the
drag link features lubricated for life ball joints
and a compact fine adjustment system.
Although the ball joints do not require greasing,
they do require regular inspection, refer to the
following sections for ball joint maintenance.
Adjustment System Visual inspection
Inspect the adjustment system to ensure the
threads are firmly seated. Also, a visual inspection
should be carried-out looking for damage or
corrosion to the adjustment system components.
Replace any part showing corrosion or damage.
Adjustment System Functional inspection