24. Lubricate lip of hub and drum oil seal with Lubri-
26. Install inner spindle nut on spindle. Wrap several
plate. Position hub and drum on axle (Fig. 179).
turns of .010 inch to .020 inch shim stock around
Care should be taken to align hub and drum
splines of axle shaft to protect splines. Install spindle
assembly with spindle so that no cocking of inner
nut socket wrench, Part No. 945940, on nut (Fig.
hub bearing occurs when sliding assembly on
181) and tighten guide bolts lightly against axle
spindle. If difficulty is encountered when trying to
position the brake drum over the brake shoes, check
for improper adjustment of slack adjuster. During
NOTE: The tapered roller bearings utilized in wheel
installation, slack adjusters must be adjusted to
hub must be preloaded in accordance with procedure
minimize brake spring tension.
steps and specifications given below. One of two
methods may be used in adjusting the required pre-
load on these bearings. It should be noted that pre-
load specifications differ for use of new bearings
and when wheel bearings are being reused.
25. Continue to support hub and drum with hoist.
Position internal gear and hub on axle so that it
engages splines on spindle (Fig. 180).
First (Preferred) Method
27. Tighten inner nut while rotating wheel hub in both
directions until there is a slight binding (Fig. 182).