24 Dealer Service
29977 (Rev. 1/23/2009)
NOTICE
■ Incorrectly shimmed crossbars can cause
costly damage to bearings and gearboxes. Follow
these steps to obtain a properly shimmed crossbar.
Figure 8
1. Using emery cloth (220 or finer), remove surface
rust, Loctite and foreign material from gearbox
vertical shaft and hole in crossbar.
Figure 9
2. Apply Locquic
®
primer to gearbox vertical shaft
and hole in crossbar. Wipe off with clean cloth and
reapply. This reduces Loctite curing time. Do not
reapply blue Loctite until all solvent smell has
gone.
NOTE: Omit step 2 when installing a clamp-type
crossbar.
Figure 10
NOTICE
■ Failure to accomplish step three as outlined
will result in an improperly shimmed crossbar and
gearbox bearing failure.
3. Install crossbar on gearbox vertical shaft without
key in keyway. Make sure crossbar is seated firmly
against washer covering oil seal in gearbox neck.
Do not drive crossbar on vertical shaft. If crossbar
will not install easily, repeat step one until it will.
Select shim pack. Add shims until they are level
with shoulder in crossbar (point A).
The washer (1) should only be used if using anti-
wrap washer.
Press shims in place very tightly and feel to see if
more shims are needed. When you reach the point
where adding one more shim will extend above
crossbar shoulder, do not add that shim.
Figure 11
1. 3/4 x 2-1/2 x 1/4
Flat washer
2. Shims
