Dodge RAM TRUCK 1500 1995 Service Manual page 1574

B R
NP231 HD/NP241/NP241 HD TRANSFER CASE 21 - 293
FRONT SHAFT
SEAL
PRY
TOOL
FRONT
CASE
BEARING
J9421-316
Fig. 53 Front Output Shaft Seal Removal
(a) Remove front output bearing retaining ring
(Fig. 54).
(b) Knock bearing out of case with brass punch,
plastic mallet or suitable size remover tool.
FiotfrooTivr
BEARING
RETAINING
R I N G
J9421-317
Fig. 54 Front Output Bearing Retaining Ring
Removal
(3) Inspect condition of input bearing. Leave bear­
ing in front case if condition is good. However, if
bearing is rough, noisy, worn, or bearing locating ring
or ring groove is damaged, remove bearing with
Driver Handle C-4171 and Tool 7828 (Fig. 55). •
(4) Inspect mainshaft output bearing. Replace
bearing only if noisy, rough, or damaged in any way.
If bearing is still in rear retainer, remove bearing
from retainer.
(5) Inspect front output shaft needle bearing in
rear case (Fig. 56). Leave bearing in place if in good
condition. However, if bearing is damaged in any
way, it will have to be replaced.
CAUTION: If bearing replacement is necessary and
the bearing is fully bottomed in the case bore, bear­
ing removal will prove quite difficult. Blind hole
SPECIAL
TOOL
7828
SPECIAL
TOOL
C-4171
J9421-318
Fig. 55 Input Bearing Removal
puller tools like those found in Snap-On Tool Sets
CG40B, CG46, and CG2545AB will be required for
bearing removal.
FRONT
SHAFT
NEEDLE
EARING
J9421-319
Fig. 56 Front Output Shaft Needle Bearing Location
TRANSFER CASE CLEANING AND INSPECTION
Wash all parts thoroughly in clean solvent. Be sure
all old
lubricant, sealant, metal particles, .xlirt and foreign
material are removed from the surfaces of every part.
Apply compressed air to each oil feed port and
channel in both case halves to remove any foreign
material or cleaning solvent residue.
The oil pump can be disassembled for cleaning and
inspection if desired. However, the pump parts are
not serviced separately. If any pump component is
worn, or damaged, the pump must be replaced as an
assembly.
Inspect the spline teeth on the synchro hub (Fig.
57). If evidence of chipping or excessive wear is ap­
parent, replace the hub. The hooked end of each syn­
chro spring should be inserted in one of the struts. In
addition, the springs should not interfere with the
polished gear cone or inside diameters of the hub.
Inspect the stop ring for cracks and wear (Fig. 57).
Replace the ring if necessary or if doubt exists over
condition. Check a replacement synchro ring for