Dodge RAM TRUCK 1500 1995 Service Manual page 1449

21 - 166 42RH TRANSMISSION OVERHAUL -
B R
air. Be sure all solvent is removed from the case and
that all fluid passages are clear.
Do.not use shop towels or rags to dry the case
(or any other transmission component) unless
they are made from lint-free materials. Lint
will stick to case surfaces and transmission
components and circulate throughout the
transmission after assembly. A sufficient quan­
tity of lint can block fluid passages and inter­
fere with valve body operation.
Inspect the case for cracks, porous spots, worn
bores, or damaged threads. Damaged threads can be
repaired with Helicoil thread inserts. However, the
case will have to be replaced if it exhibits any type of
damage or wear.
Lubricate the front band adjusting screw threads
with petroleum jelly and thread the screw part-way
into the case. Be sure the screw turns freely.
OVERRUNNING CLUTCH—LOW-REVERSE
DRUM—OVERDRIVE PISTON RETAINER
INSPECTION AND OVERHAUL
If the overrunning clutch and cam came out with
the low-reverse drum, remove the cam and clutch
from the drum as follows: Thread two clutch cam
bolts into the cam. Then lift the clutch and cam out
of the drum with the bolts (Fig. 32). Rotate the cam
back and forth to ease removal if necessary.
Fig. 32 Removing Overrunning Clutch From
Low-Reverse Drum
CLEANING AND INSPECTION
Clean the clutch rollers, springs and retainer,
clutch cam, low-reverse drum and overdrive piston
retainer in solvent. Dry them with light bursts of
compressed air, or allow them to air dry after clean­
ing.
Inspect condition of each clutch part after cleaning.
Replace the rollers and the retainer and spring as­
sembly if the rollers, springs or spring retainer are
worn or damaged. Replace the clutch cam if worn,
cracked or damaged.
Inspect the overrunning clutch race and low-re­
verse drum. Replace the drum and race as an assem­
bly if either part is worn, scored or damaged.
Examine the overdrive piston retainer carefully for
wear, cracks, scoring or other damage. Be sure the
retainer hub is a snug fit in the case and low-reverse
drum. Replace the retainer if worn or damaged.
OVERRUNNING CLUTCH ASSEMBLY
(1) Install clutch rollers in spring retainer (Fig.
33). Be sure springs are seated squarely against roll­
ers.
J9121-225
Fig. 33 Installing Overrunning Clutch Rollers In
Retainer
(2) Install roller and spring assembly in clutch cam
(Fig.
34).
(3) Lubricate overrunning clutch rollers, springs
cam and race with transmission fluid. Verify compo­
nent installation before proceeding. Bolt holes in
clutch cam are countersunk on one side. Be sure this
side of cam will face rearward as shown (Fig. 34).
(4) Inspect bolt holes in overrunning clutch cam.
Note that one hole is not threaded. Identify location
of non threaded hole with paint mark for assembly
reference (Fig. 35).
(5) Set assembly aside for final installation after
overhaul is complete.
OIL PUMP AND REACTION SHAFT SUPPORT
OVERHAUL
PUMP AND SUPPORT DISASSEMBLY
(1) Remove seal from around pump housing (Fig.
36).
(2) Mark pump housing and support assembly for
alignment reference.
(3) Loosen bolts that attach pump body to support
(Fig.
37).
(4) Remove pump-to-support bolts and separate
support from pump housing (Fig. 38).