Rear Main Bearing Oil Seals; Upper Rope Seal; Main Bearing Identification; Installing Upper/Lower Oil Seal With Tool C-3511 - Dodge D150 1990 Service Manual

S - 28 3.9L ENGINE
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Fig. 7 Removing/Installing Upper Main Bearing with
Tool C-3059
INSTALLATION
O n l y one m a i n b e a r i n g s h o u l d be selectively
fitted w h i l e a l l other m a i n b e a r i n g c a p s a r e
properly tightened.
When i n s t a l l i n g a new upper bearing shell, s l i g h t l y
chamfer the sharp edges from the p l a i n side.
(1) Start bearing i n place, and insert Tool C-3059
into o i l hole of crankshaft (Fig. 7).
(2) Slowly rotate crankshaft counterclockwise slid-
i n g the bearing i n t o position. Remove Tool C-3059.
REAR MAIN BEARING OIL SEALS
The service seal is a two piece, fitted, "Rope Type."
The upper rope seal h a l f can be installed w i t h crank-
shaft removed or i n vehicle w i t h crankshaft i n -
stalled. Lower rope seal h a l f is required i n s t a l l a t i o n
when upper seal is installed.
UPPER ROPE SEAL SERVICE (CRANKSHAFT
REMOVED)
(1) I n s t a l l a new rear bearing o i l seal i n the c y l i n -
der block so t h a t b o t h ends protrude.
(2) U s i n g Tool C-3511, tap seal down into position
u n t i l tool is seated i n bearing bore (Fig. 8).
Fig. 8 Installing Upper/Lower Oil Seal with Tool
C-3511
(3) H o l d tool i n t h i s position and cut off t h e p o r t i o n
of seal t h a t extends below the block (or cap) on b o t h
sides (Fig. 9).
Fig. 9 Trimming Upper/Lower Oil Seal
UPPER ROPE SEAL (IN
VEHICLE-CRANKSHAFT INSTALLED)
(1) Remove defective upper seal and i n s t a l l new
one u s i n g O i l Seal Remover and Installer Tool K D -
492, or equivalent (which includes complete instruc-
tions a n d is available from most auto supply stores).
(2) Carefully, t r i m the upper seal after i n s t a l l a t i o n
to e l i m i n a t e frayed ends.
LOWER ROPE SEAL
(1) I n s t a l l a new seal i n bearing cap so t h a t both
ends p r o t r u d e .
(2) U s i n g Tool C-3511, tap seal down i n t o position
u n t i l tool is seated i n bearing bore.
(3) H o l d tool i n t h i s position and cut off t h e p o r t i o n
of the seal t h a t extends above the cap on b o t h sides.
(4) I n s t a l l cap seals into slots i n bearing cap (Fig.
10). I f t h i s is not done, o i l leakage w i l l occur. L i g h t l y
oil seals w i t h engine oil.