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LUBRICATION AND MAINTENANCE
0 - 25
FRONT OF
VEHICLE
RY680
Fig. 8 NP205 Transfer
Case Drain and Fill
Locations
LUBRICANT
SELECTION—NP-241
TRANSFER
CASE
Mopar A T F Plus type 7176, or D E X R O N I I A F T or
equivalent are recommended.
LUBRICANT
SELECTION-NP-205
TRANSFER
CASE
Engine oils SG or SG/CD may be used i n t h i s
transfer case. Use SAE 30 grade motor o i l .
GEAR SHIFT
MECHANISM
(TRANSFER
CASE)-NP-241
AND NP-205
The shift mechanism should be cleaned and l u b r i -
cated as r e q u i r e d to m a i n t a i n ease of operation.
W h e n mechanism i s cleaned, lubricate pivot a n d
s l i d i n g contact areas and shift linkage pivot ends
w i t h l i g h t engine o i l (Figs. 9 and 10).
TRANSFER CASE
TRANSMISSION
ASSEMBLY
GEARSHIFT
MECHANISM
SCREWS (2)
50 FT. LBS.
(68
N*m)
SHIFT ROD
SCREW
80 IN. LBS.
(9 N»m)
RP1091
Fig. 9 Gearshift
Mechanism
Lubrication
(NP241
Transfer
Case)
RY682
Fig. 10 Gearshift
Mechanism
Lubrication
(NP205
Transfer
Case)
AXLES
CONVENTIONAL
DIFFERENTIAL
(FRONT AND
REAR)
A l l t r u c k rear axles contain SAE 80W-90 m u l t i p u r -
pose type gear l u b r i c a n t w h e n delivered f r o m the fac-
tory.
FREQUENCY
OF OIL CHANGE
Chrysler Motors does n o t recommend r e g u l a r l y
scheduled o i l changes for axles i n vehicles whose op-
e r a t i o n is classified as n o r m a l t r u c k service, unless
t h e l u b r i c a n t has become contaminated w i t h water or
to provide the correct viscosity grade for the a n t i c i -
pated temperature range as follows (Fig. 11):
The presence of water i n t h e gear l u b r i c a n t w i l l re-
s u l t i n corrosion and possible f a i l u r e o f differential
Anticipated Temp. Range
Recommended SAE Grade
Above 32°C
SAE 140
(90°F)
SAE 80W-140
(90°F)
SAE 85W-140
- 2 3 ° C to 32°C
SAE 90
( - 1 0 ° F to 90°F)
SAE 80W-90
( - 1 0 ° F to 90°F)
SAE 80W-140
SAE 85W-140
Below -23°C
SAE 75W
( - 1 0 ° F )
SAE 75W-90
( - 1 0 ° F )
SAE 80W
SAE 80W-140
J9000-56
Fig. 11 Viscosity
Grades
for
Anticipated
Temperature
Range
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