Engine Rear Mounts—4-Wd; Checking Operation Of Exhaust Valve Rotators - Dodge D150 1990 Service Manual

9 - 40 5.2L/5.9L ENGINE
•
TRANSMISSION
EXTENSION
SPACER
CROSSMEMBER
(SPORT UTILITY)
CROSSMEMBER
BRACKET
SURFACES MARKED A-B MUST
A B E HELD PARALLEL TO SURFACE
C WHEN OOUT 6 IS TORQUE
TRANSMISSION
BRACKET
TIGHTENING TORQUE
50 FT. LBS. (68 N.m)
< | >
30 FT. LBS. (41 N.m)
CROSSMEMBER
RR09B146 (EXCEPT SPORT UTILITY)
Fig. 2 Engine Supports—Rear
INSTALLATION
(1) I n s t a l l i n s u l a t o r on transmission extension
housing. T i g h t e n t h e bolts to 68 N-m (50 f t . lbs.)
torque.
(2) I n s t a l l t h r o u g h - b o l t t h r o u g h crossmember and
mount (sport u t i l i t y ) or t h r o u g h bracket and mount
(Fig. 2). T i g h t e n these bolts t o 68 N n n (50 f t . lbs.)
torque.
(3) Remove the transmission j a c k .
(4) Lower the vehicle.
ENGINE REAR MOUNTS—4-WD
REMOVAL
(1) Raise the vehicle on a hoist.
(2) Remove t h e s k i d plate ( i f equipped) from the
rear crossmember a n d transmission crossmember
(Fig. 3).
(3) Position transmission j a c k under transmission
and raise rear o f transmission a n d engine
S L I G H T L Y .
(4) Remove m o u n t i n g bolts a n d insulators (Fig. 4).
INSTALLATION
(1) I n s t a l l insulators and m o u n t i n g bolts (Fig. 4).
(2) I n s t a l l the skid plate (Fig. 3).
(3) Lower the vehicle.
SKID PLATE
ATTACHING BOLTS
PU873
Fig. 3 Skid Plate
TRANSFER CASE
ASSEMBLY
BOLT
WASHER
SLEEVE
INSULATOR
7" RAIL
eg)-*—WASHER
*PLATE TAB
TO RIGHT REAR RK 716
Fig. 4 Engine Mounts—Rear
ENGINE ASSEMBLY
CHECKING OPERATION OF EXHAUST VALVE
ROTATORS
Before a n engine is disassembled for valve g r i n d i n g
or major r e p a i r w o r k , the performance of the exhaust
valve rotators should be checked.
(1) W i t h engine i n t h e vehicle, remove c y l i n d e r
head covers.
(2) Observe exhaust valve rotation w i t h the engine
r u n n i n g a t 2000 and 3000 R P M . The valve should ro-
tate a t u n i f o r m and constant speeds, (direction o f ro-
t a t i o n is n o t important). There. is generally a large
difference i n rotation speeds between 1000 a n d 3000
R P M .
(3) Rotators w h i c h do not appear to function prop-
erly should be replaced.
REMOVAL
(1) Scribe hood hinge outlines on hood and remove
the hood.
(2) Remove the battery.