freightliner CL112 2015, Maintenance Manual

Page: 147 / 180

10. Check the tube fittings on the hard transfer lines
of the gear, see Fig. 4 , Item 15. If there is leak-
age from either of the fittings, replace the steer-
ing gear.
46–07 Bellows Replacement,
Rack and Pinion
Steering Gear
1. Park the vehicle on a level surface, shut down
the engine, and set the parking brake. Chock the
tires.
2. Raise the front wheels off the ground and sup-
port the vehicle with jack stands.
3. Remove both wheels from the steer axle.
NOTE: A Tiger Tool Slack Adjuster Puller, part
number 10406, may be used to assist with re-
moval of the outer tie rods.
4. Disconnect the outer tie rods from the steering
arms, as follows.
4.1 Remove the cotter pins and castellated
nuts.
4.2 On the driver’s side, loosen the jam nut.
See
Fig. 4 . Note the number of exposed
threads and the position of the outer tie
rod to ease installation.
4.3 Disconnect the outer tie rods from the
steering arms.
5. Use brake cleaner to remove dirt and debris from
both bellows and surrounding areas.
6. Remove the small and large Oetiker clamps from
both bellows. Discard the clamps.
7. Disconnect the outer tie rods from the inner tie
rods. If necessary, use a backup wrench on the
inner tie rod flat to turn the inner tie rod. See
Fig. 4 .
8. Remove the bellows from both sides of the gear.
NOTE: A thin film of leftover Terostat MS 939 on
the rack housing is acceptable when installing
the new bellows.
9. If the housing has Terostat MS 939 on it from a
previous replacement of the bellows, remove as
much of the leftover Terostat from the housing
sealing surface as possible. Wipe down the
housing with brake cleaner to remove all remain-
ing dirt and debris.
IMPORTANT: Only apply grease to the rack
shaft on the driver side. Do not apply grease to
the teeth of the rack shaft. Do not apply grease
to the shaft on the passenger side.
10. Turn the wheels all the way to the right to fully
expose the driver-side rack. Without applying
grease to the teeth of the rack shaft, evenly
apply a light film of Renolit CX-FO 20 grease to
the metal surfaces covered by the driver-side
bellows.
NOTICE
Two syringes of the Terostat MS 939 are included
in the Bellows Service Kit. Ensure only Terostat,
which is white in color, is applied to the rack
housing.
Do not allow Terostat MS 939 sealant to come into
contact with the inner tie rods. Mistakenly apply-
ing sealant to the inner tie rods may cause dam-
age to the bellows and the gear. See
Fig. 5 .
IMPORTANT: Terostat MS 939 sealant must be
applied at a temperature between 41 and 104°F
(5 and 40°C) to effectively seal steering gear
components. Because Terostat sealant sets
within ten minutes of application, the bellows
must be installed within ten minutes of sealant
application to ensure a good seal.
11. Evenly apply Terostat MS 939 sealant to the
outer diameter of the rack housing where the
large ends of the bellows seat on the gear hous-
ing. See
Fig. 6 .
NOTICE
Improper installation may cause moisture and
contaminants to enter the gear, which may result
in severe damage.
12. Install the new bellows on the gear. Ensure the
bellows are seated properly on the gear housing
and inner tie rods.
13. Rotate the bellows back and forth approximately
15 degrees to evenly disperse the sealant be-
tween the bellows and the gear housing.
Steering
46
Columbia Maintenance Manual, September 2015
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