Chevrolet 10 Series 1970 Service Manual page 205

F i g . 5 3 — I n s t a l l i n g
axle, 15,000 lb. (tw o-speed);
J-22350 fo r 17,000 lb.
NOTE: The b earing c u p -to -re ta in e r ring seat­
ing p rocedu re is essential to assure that an
accurate wheel b earin g adjustment w ill be ob­
tained, and that the adjustment w ill not loosen
during veh icle operation.
Drum Dem ountable-Type (Fig. 4 4 )
Replacement
The dem ountable-type drum may be separated fro m the
hub and rem oved from the v e h ic le without disturbing the
axle shaft and hub. The drum is held to the hub by coun­
tersunk, slotted screw s, which a re e a s ily rem oved with a
s cre w d riv e r .
D rum -N ondem ountable-Type (Fig. 4 5 )
Replacement
Construction, o f the nondemountable-type hub and drum
assem bly, is such that replacem ent cannot be a ccom ­
plished with the hub assem bly in stalled on the veh icle.
1. Separate the drum and hub by rem oving the dru m -to-
hub retaining b olts, hub stud nuts, o r by p ressin g out
the wheel studs, as applicable.
2. P o sitio n brake drum to hub assem bly, making certain
that all drain holes a re in alignm ent.
3. Apply a light, even coating o f sealin g compound to the
hub o il d efle c to r contact surface, and position d e­
fle c to r to drum.
4. Install drum -to-hub retaining bolts, hub stud nuts, or
p re s s wheel studs into drum, as applicable.
W h eel Bolt
Replacem ent.
W heel b olts a re s e rra te d and may also be swaged in
p lace; how ever, replacem ent
sam e fo r both types o f installation.
H u b O u t e r B e a r in g ( T y p i c a l )
M50, tra ilin g . T o o l
(Tw o-Speed) axle (fig. 52).
procedure rem ains the
REAR SUSPENSION AND DRIVE LINE 4-29
±
REMOVAL
F i g . 5 4 — W h e e l
P r e s s bolts out o f hub flange (as illu strated in F igu re
54) and p re s s new b olts into place, making sure they a re
a tight fit. If a ll bolts w ere rem oved, be sure that hub o il
d e fle c to r is in position under bolt heads.
Hub Stud
Replacement
Hub studs can be rem oved and rep laced by using a con­
ventional stud re m o v e r and rep la c e r.
studs a re fir m ly bottom ed in holes and that threads a re
not damaged during installation.
O il Seal Sleeve and Bearing Thrust Spacer
Replacement
The hub inner bearin g spacer and sle ev e assem bly
should be inspected when the hub and b earin g assem bly is
rem oved fro m the axle housing (fig. 56).
If inspection dictates the need fo r replacem en t, p ry the
s le e v e and spacer assem bly fro m the housing, being
c a refu l not to damage machined su rface o f axle housing.
P r e s s a new bearin g sp acer into the I.D. o f a new
s le e v e - spacer should seat against bottom o f s le ev e .
CAUTIO N: The O.D. o f the sleeve is the run-
ning surface fo r the hub o il seal.
ca re to p reven t dam age to this surface when in-
stalling the b earin g spacer (fig. 64).
Tap the sle ev e assem bly onto the axle housing until the
bearin g spacer contacts shoulder on housing.
W h eel Hub O il Seal
Replacement
P r y old seal fro m its location in the hub b ore, using
c a re so as not to dam age bore su rface. Thoroughly clean
a ll o il and fo reign m atter fro m seal contact area in hub
b o re . Pack the cavity between the seal lip s with a high-
m eltin g point wheel b earin g lubricant, and position seal
in hub bore. C arefu lly p re s s the seal into the hub b ore,
using appropriate tool until
(fig . 55).
WKKM —
INSTALLATION
B o lt R e p l a c e m e n t
Make sure that
Use extrem e
seal is p ro p erly seated
CHEVROLET TRUCK SERVICE MANUAL