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9. LSZ20 Install New or Rebushed
Upper Control Arm
1.
Position new or re-bushed upper control arm assembly
with four (4) wear washers with lift bracket mounting holes
towards frame bracket (Figure 7).
2.
Install new one (1) 7/8" pivot bolt and one (1) new 7/8"
washer at upper frame bracket pivot, spacer wrapper,
shelf bracket and crossmember.
3.
Re-install lift assembly onto one (1) 7/8" upper pivot bolt
at frame bracket. Install lower lift assembly one (1) 3/4"
bolt, one (1) 3/4" lock nut and one (1) 3/4" washers.
Torque the one (1) 3/4" bolt according to specifications
in Section 11.
4.
Plug in supply tubing into fitting on lift assembly.
5.
Install at axle one (1) 7/8" upper pivot bolt and one (1)
7/8" washer.
6.
Using your hand thru window within front face of
knuckle, install one (1) 7/8" nut and one (1) 7/8" washer
(see optional procedure below). Torque 7/8" pivot bolts
according to specifications in Section 11.
Optional procedure to install 7/8" nut and 7/8"
washer: Using a 1-5/16" box end wrench with tape
to retain the lock nut, rotate the one (1) 7/8" upper
axle pivot bolt to install the one (1) 7/8" lock nut.
Torque 7/8" pivot bolts according to specifications
in Section 11.
7.
Re-attach air spring to axle using two (2) 1/2" bolts with
two (2) 1/2" lock washers to air spring mounting plate on
axle. Torque two (2) 1/2" bolts according to specifications
in Section 11.
XL-PS20053RM-en-US Rev A · 2017-10-06 · Amendments and Errors Reserved © SAF-HOLLAND, Inc., SAF-HOLLAND, HOLLAND, NEWAY, SAF, and logos are trademarks of SAF-
HOLLAND S.A., SAF-HOLLAND GmbH, and SAF-HOLLAND, Inc.
Control Arm Installation
13
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