Check Fluid Level; Special Additives; Drain And Fill; Gearshift Linkage - Dodge D150 1990 Service Manual

• LUBRICATION AND MAINTENANCE 0 - 23
CHECK FLUID LEVEL
The NP2500 overdrive 5-speed a n d NP435 over-
drive 4-speed should be inspected for leakage a n d
proper o i l level whenever general maintenance is
performed under the vehicle. To check o i l level, r e -
move t h e f i l l e r p l u g (Figs. 2 and 3). I f low, f i l l t o t h e
b o t t o m o f t h e f i l l e r hole w i t h S A E 10W-30 engine o i l
( A P I Classification S G or SG/CD). D e x t r o n I I A T F
m a y b e u s e d i f h i g h shift effort i s e x p e r i e n c e d
d u r i n g w a r m - u p i n c o l d w e a t h e r . D r a i n the 10W-
30 o i l f r o m the t r a n s m i s s i o n a n d fill w i t h t w o
q u a r t s o f D e x t r o n I I A T F fluid.
Fig. 2 NP2500 Manual Transmission
Fig. 3 NP435 Manual Transmission
SPECIAL ADDITIVES
Chrysler Motors does not recommend t h e a d d i t i o n
of a n y special additives to t h e transmission other
t h a n special dyes t o aid i n detecting f l u i d leaks.
The use o f transmission sealers should be avoided
since t h e y may adversely affect t h e seals.
DRAIN AND FILL
The NP2500 overdrive 5-speed a n d NP435 over-
drive 4-speed m a n u a l transmission should be d r a i n e d
and f i l l e d a t the following i n t e r v a l s (Fig. 4).
Light Duty Cycle
Normal
60 000 km
37,500
miles
Service
Heavy Duty Cycle
58 000 km 36,000 miles
Severe
Service
29 000 km 18,000 miles
19000-43
Fig. 4 Manual Transmission—Drain and Fill Intervals
GEARSHIFT LINKAGE (MANUAL
TRANSMISSION)
The gearshift control mechanism should be l u b r i -
cated every 36 000 k m (22,500 miles) or every t w o
years whichever occurs first, or more f r e q u e n t l y i f
h i g h shift effort or noise (mechanism r a t t l i n g ) i s ap-
parent.
The four-speed gearshift control mechanism i s
equipped w i t h a grease f i t t i n g located on t h e left side
(Fig. 5), accessible f r o m the underside of t h e vehicle.
U s i n g a h i g h pressure grease g u n , apply M u l t i p u r -
pose Grease, N L G I , Grade 2 E.P. into t h e control
mechanism u n t i l the grease i s visible on t h e operat-
i n g levers. V e h i c l e m u s t b e i n r e v e r s e g e a r p o s i -
t i o n , w i t h t h e e n g i n e O F F , w h e n l u b r i c a t i n g t h i s
m e c h a n i s m .
Fig. 5 Four-Speed Shift Mechanism