Freightliner FLA/FLB/FLC/FLD/FLL. Manual — part 23
Hendrickson RT2 and RTE2 Series
1.
Park the vehicle on a level surface, apply the
parking brakes, and chock the front tires.
Raise the rear of the vehicle until the rear wheels
are suspended in the air, then support the ve-
hicle with safety stands.
2.
Check the torque of the number-one spring
hanger (double-lock-bolt design) lock bolt nuts. If
a loose connection has caused pin hole wear,
replace the hanger.
3.
Inspect the pin hole in the outboard leg of the
number one spring hanger (draw-key design) for
wear or elongation.
WARNING
Wear at this point requires hanger replacement, or
premature fracture of the spring hanger pin may
occur, with possible separation of components
and loss of vehicle control. This could result in
serious personal injury or property damage.
4.
Visually inspect the cam surface of the number-
two spring hanger for wear due to operating
mileage. Also, inspect the outside legs for wear
which can be caused by worn spring eye bush-
ings.
NOTE: RTE2 (extended-leaf-spring) suspen-
sions require a minimum gap of 3/8 inch (9.5
mm) between the cam surface of the number-
two spring hanger and the top of the main leaf
in the unloaded condition. See
. If this
gap is less than 3/8 inch (9.5 mm), the
extended-leaf portion of the spring will not per-
form satisfactorily for an empty ride.
5.
Inspect the cam surface on the number-three
spring hanger (extended-leaf-springs only) for
wear. Excessive wear will reduce the gap avail-
able at the number-two spring hanger. Refer to
the previous note.
6.
Place a block of wood on the leaf spring. See
. Place a pry bar on the block of wood
and insert the end of the pry bar under the frame
hanger. Attempt to lift the frame hanger, as
shown in
. Also, with an empty chassis
and the brakes applied, attempt to rock the chas-
sis back and forth while observing the spring
eye. In either case, if 1/8 inch or more of move-
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1
1.
Rust Inspection Area
Fig. 16, Hendrickson RS Series Rust Inspection
f320318a
05/27/93
Fig. 17, Hendrickson RS Series Load Cushion
Inspection
Suspension
32
32/9
ment is observed, the bushing and pin should be
replaced. This also could indicate that a broken
spring eye and spring are connected to the
spring hanger through the wrapper eye of the
second leaf. In this case, the main leaf or the
complete spring should be replaced immediately.
Neway
WARNING
Inspect the components and check their operation
as described below. Failure to perform these in-
spections and checks could result in separation of
worn suspension components and loss of vehicle
control, possibly causing personal injury or death,
or property damage.
1.
Park the vehicle on a level surface. Apply the
parking brakes and chock the tires to prevent the
vehicle from moving.
2.
Inspect the rear suspension for any signs of
damage, loose components, wear, or cracks. Re-
place any damaged components to prevent fail-
ure or equipment breakdown.
3.
Inspect all bolts and nuts at the pivot and axle
connections to assure they are properly torqued.
Check all other nuts and bolts for proper torque.
See
of this manual for proper torque
specifications.
4.
Check the air pressure gauge to confirm that
there is in excess of 65 psi (448 kPa) in the air
system, and inspect the air springs for sufficient
and equal firmness.
NOTE: Height control valves control all air
springs. Check for air leaks by applying a soapy
solution, then checking for bubbles, at all air
connections and fittings.
5.
Check the riding height of the air suspension by
measuring the distance from the centerline of the
rear axle (see
) to the bottom of the frame
rail. If the riding height is incorrect, adjust the air
suspension.
32–02 Suspension Lubricating
Front Suspension
Wipe all dirt away from the grease fittings (if
equipped) on the spring-eye bushings. Apply multi-
purpose chassis grease with a pressurized grease
gun until the old grease is forced out.
f320112a
05/27/93
1
2
3
4
A
A. Minimum gap of 3/8" (9.5 mm).
1.
Forward (no. 1) Spring Hanger
2.
Spring Eye Pin
3.
Rear (no. 2) Spring Hanger
4.
Rear (no. 3) Extension
Fig. 18, RTE Suspension (unloaded)
1
2
3
4
f320422
08/16/96
1.
Frame Bracket
2.
Leaf Spring
3.
Wood Block
4.
Pry Bar
Fig. 19, Hendrickson RT2 and RTE2 Series Frame
Bracket Inspection
Suspension
32
32/10
Rear Suspension
Freightliner Spring
Single Axle
No lubrication is required on Freightliner single axle
rear suspensions.
Tandem Axle
Lubricate the equalizer cap-and-tube assembly bush-
ings by applying multipurpose chassis grease at the
grease fitting until the old grease is forced out from
the cap-and-tube assembly. See
Hendrickson Spring Suspension,
RT2 and RTE2 Series
Lubricate the bronze, ball-indented bushings in the
spring eye, as follows:
1.
Park the vehicle on a level surface, apply the
parking brakes, and chock the front tires.
2.
Raise the rear of the vehicle until the rear wheels
are suspended in the air, then support the ve-
hicle with safety stands. This relieves the load on
the bushings and pins to allow the proper flow of
lubricant around them.
3.
Using a multipurpose chassis grease, lubricate
the bronze, ball-indented bushings in the spring
eyes at the grease fitting. See
. Continue
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f320423
1
4
3
2
1.
Frame Rail
2.
Axle Housing
3.
Axle Centerline
4.
Suspension Ride Height
Fig. 20, Neway Ride Height Inspection
320020a
05/27/93
1
1
A
A. Lubricate here.
1.
Cap-and-Tube Assembly Bushing
Fig. 21, Equalizer Assembly Lubrication
Suspension
32
32/11
to lubricate until grease exits both ends of the
bushing. If the pin will not accept lubricant, re-
move the pin and clean the lubrication channels
where lubricant may have hardened. Remove the
safety stands and lower the vehicle after lubrica-
tion is complete.
Neway
No lubrication is required on Neway rear suspen-
sions.
Reyco
No lubrication is required on Reyco rear suspen-
sions.
Hendrickson Walking Beam, Series
RS
No lubrication is required on RS Series suspensions
equipped with rubber bushings.
If the equalizer beam has a bronze center bushing,
apply multipurpose grease at the beam grease fitting
on the equalizer beam center hub, until clean grease
appears at both ends of the grease seals.
Chalmers Walking Beam
No lubrication is required on the Chalmers rear sus-
pension.
32–03 Suspension U-Bolt
Torque Checking
CAUTION
Failure to retorque the U-bolt nuts could result in
spring breakage and abnormal tire wear.
1.
Park the vehicle on a flat surface and apply the
parking brakes. Chock the tires to prevent the
vehicle from moving.
2.
Check the U-bolt torque in a diagonal pattern.
Set a click-type torque wrench to the highest
torque value for the fastener being checked. See
for U-bolt torque specifications. Turn the
wrench in a clockwise motion (looking up) until
the torque wrench clicks.
3.
Remove the chocks.
09/15/95
f320424
1
2
2
3
4
4
1.
Bronze Bushing
2.
Lubrication Hole
3.
Grease Fitting
4.
Lubrication Groove
Fig. 22, Hendrickson RT2 and RTE2 Series Bushing
Lubrication
Suspension
32
32/12
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