freightliner BUSINESS CLASS M2 100, Maintenance Manual

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If the oil is acceptable, check the oil level. If it is not
full (see
Fig. 9 ), fill it to the bottom of the vent plug
hole with approved lubricant (see Table 1 ).
Lubricant Specifications, Over-the-Road Service
Applications
Lubricant Type
Lubricant SAE
Viscosity Grade
Synthetic Drive Axle Lubricants or
Equivalent with SAE Specification
J2360 or Military Specification MIL-L-
2105E 75W-90
Table 1, Lubricant Specifications, Over-the-Road
Service Applications
33–06 All-Axle Alignment
Check
Drive Axle Alignment Checking
Check the axle alignment, parallelism, and thrust
angle measurements for the rear drive axles. Use the
applicable procedure and specifications in
Group 35
of the vehicle 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. 10 . Lock in place. Check that the scale is
set on zero.
7. Place the trammel bar at the front of the tires
(see
Fig. 11 ) and adjust the scale end so that
the pointers line up with the scribe lines. See
Fig. 12 .
f330082a 10/05/2016
A
B
NOTE: B minus A equals toe-in.
Fig. 10, Wheel Toe-In (overhead view)
f330014a 10/05/2016
Fig. 11, Trammel Bar Positioning
Front Axle
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