ProGear Hendrickson HN FR Series Service Manual page 21

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HN
®
FR Series
FIGURE 7-3
Nominal
Axle
Bracket
Equalizing
Bar
Beam
Pin
Center
3 16
/
" (4.8 mm)
Alignment Shim
3 8
/ (9.5 mm)
"
2. To determine where to adjust shim
SERVICE HINT
Axle adjustment will be on the side of the
bar pin where shim thickness is increased.
For example, to correct the axle thrust
angle illustrated in Figure 7-4, shim
thickness will need to be increased at the
front of the bar pin (Location X) and/or the
rear of the bar pin (Location Y).
NOTE
Computerized alignment equipment, such as a Hunter WT100 series, is the preferred method
of alignment. Laser alignment equipment may be used, however, to calculate the shim
thickness required the target offset must be converted to thrust angle, see alignment equipment
manufacturer for procedures.
3. Chock the wheels of the front axles to prevent vehicle movement during service.
4. Raise the frame of the vehicle to remove the load from the suspension. Support the frame
5. Support the equalizing beam and remove the fasteners from the end bushing where the
Alignment & Adjustments
Pro Gear and Transmission • 906 W. Gore St. Orlando, FL 32805 • 1 (877) 776-4600 / (407) 872-1901 • parts@eprogear.com
Axle Moves
Axle
Bracket
Equalizing
Bar
Beam
Pin
Center
3 16
/
" (4.8 mm)
Alignment Shim
thickness use measurement
A
for front drive axle or
C
and
D
for rear
drive axle, see Figure 7-1.
at this height with frame stands.
bar pin alignment shim adjustment is being made.
20
Axle
Bracket
Equalizing
Beam
Center
Alignment Shim
3 8
3 8
"
"
/ (9.5 mm)
/ (9.5 mm)
FIGURE 7-4
and
B
Axle Moves
Bar
Pin
3 16
/
" (4.8 mm)
17730-285

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