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XL-AS20067BM-en-US · 2021-02-05 · Amendments and Errors Reserved · © SAF-HOLLAND, Inc., SAF-HOLLAND, HOLLAND, SAF,
and logos are trademarks of SAF-HOLLAND S.A., SAF-HOLLAND GmbH, and SAF-HOLLAND, Inc.
Figure 12
Figure 11
SwingAlign Axle Alignment
8. SwingAlign Axle Alignment
IMPORTANT:
Axle alignment should always be done
while the trailer is empty.
8.1 Alignment Preparation
1. Pull the trailer in a straight line for a sufficient distance
to ensure there are no binds in the suspension.
2. Disengage the trailer parking brakes and make sure the
trailer is empty.
3. Manually measure or use an optical device specifically
designed for alignment measuring to determine
the following:
a. Measure the distance from the kingpin to the centerline
of the front axle spindles. It is recommended that
spindle extensions be utilized.
b. Dimensions A and B
(Figure 10)
MUST be equal to
within 1/8" (3 mm).
c. Measure the distance from the centerline of the front
axle spindles to the centerline of the rear axle spindles.
d. Dimensions C and D
(Figure 10)
MUST be equal to
within 1/16" (1 mm).
8.2 Alignment Instructions
1. Using the measurements from Step 3, align each axle by
rotating the alignment bolt head on the front face of the
roadside frame bracket clockwise to move axle forward
(A arrows)
; counterclockwise to move axle rearward
(B arrows)
(Figure 11)
.
IMPORTANT:
DO NOT loosen the pivot bolts.
IMPORTANT:
Two (2) scribe lines on the side of the frame
bracket indicate maximum adjustment for
axle alignment. If the edge of the visible
washer touches either scribe line, the
SwingAlign axle alignment adjustment
is “out of stroke.” Inspect and repair
trailer components as necessary and
realign.
(Figure 12)
.
IMPORTANT:
The SwingAlign design maintains proper
alignment without welding or without
loosening of the pivot connection. DO
NOT weld alignment bolt or pivot bolts
(Figure 12)
.
Figure 10
A = B ± 1/8" (3 mm)
C = D ± 1/16" (1 mm)
D
KINGPIN
B
A
C
ALIGNMENT BOLT ASSEMBLY
WASHER
ALIGNMENT PLATES
SCRIBE
LINES
PAN HEAD
TORSION BOLT
ALIGNMENT BOLT
ALIGNMENT
BOLT
WASHER
“A” ARROWS - AXLE FORWARD
“B” ARROWS - AXLE REARWARD
NOTE: 1/2 TURN OF FREE PLAY
IS ACCEPTABLE
