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SPRINGS/SHOCK ABSORBERS
17 - 9
Fig. 13 Rear Spring & Auxiliary Spring—D/W-250 &
D/W-350 Vehicles
(4) Remove the n u t s and bolts from t h e s p r i n g front
and rear "eyes", and remove the s p r i n g from the ve-
hicle (Figs. 1 1 , 12 and 13).
INSPECTION
(1) Inspect the spring and shackle " e y e " bushings,
t h e shackle bolts, t h e shackle, t h e shackle bracket
and the s p r i n g "eye" (pivot) bolts for excessive wear
and damage. Replace a l l excessively w o r n and d a m -
aged components (Figs. 1 1 , 12 and 13).
(2) Examine the condition o f t h e s p r i n g center b o l t
(Figs. 1 1 , 12 and 13) and ensure t h a t the n u t i s cor-
rectly tightened. I f necessary, t i g h t e n the center b o l t
n u t w i t h 20 N-m (15 ft-lbs) torque.
(3) Inspect t h e spring leaf a l i g n m e n t clips. T h e
clips m u s t not be damaged or bent. The clips should
be t i g h t around t h e spring leaves, b u t n o t t i g h t
enough t o " b i n d " the spring leaves. Replace damaged
clips.
(4) Inspect for broken s p r i n g leaves and replace as
necessary.
T h e r e a r springs a r e d e s i g n e d to function s a t -
isfactorily without l u b r i c a n t a d d e d b e t w e e n t h e
leaves; however, for a b n o r m a l o p e r a t i n g c o n d i -
tions, a slight application o f l u b r i c a n t
b e t w e e n
the leaves w i l l improve the s p r i n g action.
L i g h t - d u t y , 2 W D vehicle springs are equipped w i t h
plastic-tip liners. These tips should not be l u b r i c a t e d ,
b u t may be replaced i f excessively w o r n or missing.
Vehicles w i t h heavy-duty suspensions do n o t have
plastic-tip liners.
INSTALLATION
(1) Position t h e spring on t h e axle shaft tube so
t h a t the spring center bolt i s inserted i n t o t h e locat-
i n g hole i n the axle tube s p r i n g pad (Figs. 1 1 , 12 a n d
13).
(2) A l i g n the spring front "eye" w i t h the bolt hole
i n t h e front bracket and i n s t a l l t h e "eye" pivot b o l t
and n u t (Figs. 1 1 , 12 and 13).
(3) A l i g n the spring rear "eye" w i t h the bolt hole i n
the spring shackle or the rear bracket (as applicable)
and i n s t a l l the spring "eye" p i v o t bolt and n u t (Figs.
1 1 , 12 and 13).
(4) T i g h t e n t h e spring front a n d rear "eye" p i v o t
bolt nuts u n t i l a l l separation between t h e m e t a l is
removed.
(5) I n s t a l l t h e U-bolts, replacement
lockwashers
and t h e r e t a i n i n g nuts (Figs. 1 1 , 12 and 13).
(6) T i g h t e n the nuts u n t i l t h e y force the lockwash-
ers flush against the spring bracket.
(7) A l i g n t h e a u x i l i a r y s p r i n g w i t h t h e p r i m a r y
spring (Figs. 1 1 , 12 and 13).
(8) Remove t h e supports a n d lower t h e vehicle so
t h a t the weight is being supported by the tires (i.e.,
the springs).
(9) T i g h t e n t h e spring r e t a i n i n g nuts according to
the following specifications:
• U-bolt nuts (1/2-20) - 88 N-m (65 ft-lbs) torque;
• U-bolt nuts (9/16-18) -
149 N - m (110 ft-lbs)
torque;
• spring front and rear "eye" pivot bolt n u t (1/2-20)
-
88 N-m (65 ft-lbs) torque;
• spring front and rear "eye" pivot bolt n u t (5/8-18)
-
135 N-m (100 ft-lbs) torque; and
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