GMC 4000 Series Service Manual page 155

Sec. 4B
Page 148
REAR SPRINGS AND SUSPENSION
are limited to replacement of rubber mounting
grommets and periodically tightening all mount-
ings. If a shock absorber becomes inoperative,
the complete unit must be replaced.
S PR IN G EY E B U S H IN G — (4000 and PS4500) (Steel Backed Rubber T y p e )..................................................................................... (W id th) 3.270"-3.300"
RA D IU S L E A F B U SH IN G —(A ll 4 0 0 0 -P S -4 5 0 0 ) (Steel Backed Rubber T y p e )................................................................................ (I.D .)
S PR IN G U -BO LT N UTS
All 4000 S e rie s .................................................
(A ll E and S M odels) ......................................
PS-4500 M odels...............................................
REAR SPR IN G REBOUND BO LT NUT
(A ll E and S M odels)....................................
SHOCK A B S O R B ER NUTS
(U pper Nut All 4000 S e r ie s ) .........................
(Lo w e r Nut All 4000 S e r ie s ) .........................
R EA R SP R IN G EY E TO
Front Hanger Bolt Nut (A ll 4000 S e r ie s ) ..
(A ll E and S S e rie s) Radius Leaf Bolt Nut.
REBO U N D PIN R E T A IN E R BO LT
(4000 and PS 4500 S e r ie s ) ............................
G M C S E R V I C E M A N U A L
SPECIFICATIONS
REAR SUSPENSION SPECIFICATIONS
TORQUE SPECIFICATIONS
CAUTION: When replacing a shock
absorber, check the model number stamp­
ed on the unit to make sure it is the same
model as the one removed.
FT . L B S .
220
300
300
30
85
70
175
450
5
(O .D .) 1.750"-1.755"
(I.D .) 0.940"-0.950"
(W idth) 2.725"-2.750"
(.O D .) 1 .3 7 5 M .3 8 0 '
0.625"-0.632"
TORQUE
320
320
320
40
95
80
225
500
10