freightliner 108SD 2021, Руководство пользователя

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pump multipurpose chassis grease, NLGI Grade 2
(8% 12-hydroxy lithium stearate grease), into the tie-
rod ends until all used grease is forced out and fresh
grease is seen at the ball stud neck.
NOTE: For operation in very cold climates, use
NLGI Grade 1 (6% 12-hydroxy lithium stearate
grease).
33–04 Alignment Check
Drive Axle Alignment Checking
Check the axle alignment, parallelism, and thrust
angle measurements for the rear drive axles. For
specifications and procedures, see
Group 35 of the
108SD and 114SD Workshop Manual .
Toe-In Inspection
For vehicle alignment to be accurate, the shop floor
must be level in every direction. The turn plates for
the front wheels must rotate freely without friction,
and the alignment equipment must be calibrated
every three months by a qualified technician from the
equipment manufacturer. Freightliner dealers must
have proof of this calibration history.
1. Apply the parking brakes and chock the rear
tires.
2. Raise the front of the vehicle until the tires clear
the ground. Place safety stands under the axle.
3. Using spray paint or a piece of chalk, mark the
entire center rib of each front tire.
4. Place a scribe or pointed instrument against the
marked center rib of each tire, and turn the tires.
The scribe must be held firmly in place so that a
single straight line is scribed all the way around
each front tire.
5. Place a turn-plate or turntable under both front
tires. Remove the safety stands and lower the
vehicle. Remove the lock-pins from the gauges;
make sure the tires are exactly straight ahead.
NOTE: If turn-plates or turntables are not avail-
able, lower the vehicle. Remove the chocks
from the rear tires and release the parking
brakes. Move the vehicle backward, then for-
ward about six feet (two meters).
6. Place a trammel bar at the rear of the front tires;
locate the trammel pointers at spindle height,
and adjust the pointers to line up with the scribe
lines on the center ribs of the front tires. See
Fig. 8 . Lock in place. Check that the scale is set
on zero.
7. Place the trammel bar at the front of the tires
(see
Fig. 9 ) and adjust the scale end so that the
pointers line up with the scribe lines. See
Fig. 10 .
8. Read the toe-in from the scale, and compare it to
the toe-in specification in
Group 33 of the
108SD and 114SD Workshop Manual . If correc-
tions are needed, refer to Group 33 of the
06/12/2012 f330273
1
2
NOTE: No grease should emit from the tie-rod boot. If
grease emits from the tie-rod boot, the boot is dam-
aged.
1. Grease Fitting 2. Boot
Fig. 7, Grease Fitting and Boot (Detroit axle shown)
f330082a 10/05/2016
A
B
NOTE: B minus A equals toe-in.
Fig. 8, Wheel Toe-In (overhead view)
Front Axle
33
108SD and 114SD Maintenance Manual, May 2017
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