Dodge D150 1990 Service Manual page 790

Rear wheel drive ram truck

Table of Contents

Fig. 7 Wormshaft & Bail Nut Removal

Fig. 8 Shaft Seal Removal

(1) Position t h e b a l l n u t w i t h the r e c i r c u l a t i n g b a l l

guide holes facing u p w a r d and the b a l l n u t teeth fac-

i n g downward. I n s t a l l t h e wormshaft i n the b a l l n u t .

Rotate t h e shaft and t h r e a d i t i n t o t h e n u t u n t i l a n

equal number o f shaft threads are visible a t each end

of the n u t (Fig. 9).

(2) I n s t a l l one r e c i r c u l a t i n g b a l l i n each b a l l guide

hole. Move t h e wormshaft up/down a n d side-to-side

u n t i l t h e balls r o l l i n t o t h e b a l l n u t threads a t t h e

bottom of wormshaft a n d support the wormshaft.

(3) Assemble and i n s t a l l the b a l l guides i n the b a l l

n u t (Fig. 10).

(4) Divide t h e r e m a i n i n g 48 r e c i r c u l a t i n g balls i n t o

two groups and i n s t a l l 24 balls i n each b a l l n u t cir-

cuit. Insert the balls i n the b a l l n u t circuits t h r o u g h

the holes i n t h e b a l l guides (Fig. 10).

Fig. 9 Wormshaft & Ball Nut

T o a i d t h e r e c i r c u l a t i n g b a l l i n s t a l l a t i o n , r o t a t e

w o r m s h a f t b a c k a n d f o r t h s l i g h t l y w h i l e i n s e r t -

i n g t h e b a l l s .

Fig. 10 Recirculating Ball Installation

(5) Place t h e b a l l guide clamp on the b a l l n u t and

i n s t a l l t h e clamp r e t a i n i n g screws (Fig. 6). T i g h t e n

the screws w i t h 14 N n n (10 ft-lbs) torque.

CAUTION: To avoid damaging the tangs on the ball

guide ends, do not allow the wormshaft to travel to

the end of the thread in either direction.

(6) L u b r i c a t e the wormshaft threads w i t h chassis

l u b r i c a n t and rotate t h e shaft to move i t in-and-out

of t h e b a l l n u t and distribute the lubricant.

(7) L u b r i c a t e t h e wormshaft upper bearing w i t h

chassis l u b r i c a n t and install i t on the wormshaft.