Clutch DODGE RAM 1500 1998 2.G Workshop Manual

(28) Remove reverse clutch gear (Fig. 62).
(29) Remove first gear from bearing and mainshaft
(Fig. 63).
(30) Remove first gear bearing from mainshaft
(Fig. 64).
CLEANING
Clean the gears, shafts, shift components and
transmission housings with a standard parts clean-
ing solvent. Do not use acid or corrosive base sol-
vents. Dry all parts except bearings with compressed
air.
Clean the shaft bearings with a mild solvent such
as Mopar degreasing solvent, Gunk or similar sol-
vents. Do not dry the bearings with compressed air.
Allow the bearings to either air dry or wipe them dry
with clean shop towels.
INSPECTION
NOTE: Minor corrosion, nicks, or pitting can be
smoothed with 400 grit emery and polished out with
crocus cloth.
Inspect the reverse idler gear, bearings, shaft and
thrust washers. Replace the bearings if the rollers
are worn, chipped, cracked, flat-spotted or brinnelled.
Replace the gear if the teeth are chipped, cracked or
worn thin.
Inspect the front bearing retainer and bearing cup.
Replace the bearing cup if scored, cracked, brinnelled
or rough. Check the release bearing slide surface of
the retainer carefully. Replace the retainer if worn or
damaged in any way.
Inspect mainshaft bearing surfaces, splines, snap
ring grooves and threads. Replace the shaft if any
surfaces exhibit considerable wear or damage.
Inspect the countershaft and bearings. Replace the
shaft if any surfaces exhibit considerable wear or
damage.
Inspect shift forks for wear and distortion. Check
fit of the sleeve in the fork to be sure the two parts
fit and work smoothly. Replace the fork if the roll pin
holes are worn oversize or damaged. Do not attempt
to salvage a worn fork. Replace shift fork roll pins if
necessary or if doubt exists about their condition.
The all bearings for wear, roughness, flat spots,
pitting or other damage. Replace the bearings if nec-
essary.
Inspect the blocker rings and fiction cones. replace
either part if worn or damaged in any way. Replace if
the friction material is burned, flaking off or worn.
Inspect synchro components wear or damage.
Replace parts if worn, cracked or distorted.
Inspect all of the thrust washers and locating pins.
Replace the pins if bent or worn. Replace the wash-
ers if worn or the locating pin notches are distorted.
Inspect the case and housing/adapter sealing and
mating surfaces are free of burrs and nicks. InspcetFig. 62 Reverse Clutch Gear
1 - REVERSE CLUTCH GEAR
Fig. 63 FIRST GEAR
1 - FIRST GEAR
Fig. 64 FIRST GEAR BEARING
1 - MAINSHAFT
2 - FIRST GEAR BEARING
21 - 62 MANUAL TRANSMISSION - NV4500DR
MANUAL TRANSMISSION - NV4500 (Continued)

(4) Remove countershaft rear bearing plate.
(5) Install a end play shim that will provide mini-
mum countershaft end play. Position shim on rear
bearing cup (Fig. 76).
(6) Install countershaft rear bearing plate (Fig.
73).
NOTE: Verify plate is seated in reverse idler shaft
notch and end play shims are still in position
before installing bolts.
(7) Apply 1-2 drops Mopar Loc N' Seal or equiva-
lent to threads of rear bearing plate bolts. Then
install and tighten bearing plate bolts to 23 N´m (200
in. lbs.).
SHIFT LUG AND RAIL
(1) Lubricate shift lug and rail with CastroltSyn-
torq or equivalent.
(2) Insert shift lug rail part way into case.
(3) Install shift lug on rail.
(4) Position shift rail so roll pin notches are
toward outside of case (Fig. 77).
(5) Install roll pin that secures lug to rail (Fig. 77).
MAINSHAFT AND GEARTRAIN
CAUTION: The reverse, 1-2 and 3-4 synchro compo-
nents can be assembled and installed incorrectly.
Follow assembly procedures for component identi-
fication and location.
Lubricate mainshaft bearing surfaces and all bear-
ing assemblies with CastroltSyntorq or with petro-
leum jelly.(1) Install first snap ring in rear most groove of
mainshaft hub (Fig. 78). This snap ring locates first
gear clutch gear on shaft.
NOTE: Four of these snap rings are used to secure
various components on the mainshaft 1-2 synchro
hub. The snap rings are all the same size and are
interchangeable.
Fig. 76 COUNTERSHAFT END PLAY SHIM
1 - REAR BEARING CUP
2 - END PLAY SHIM (SELECTIVE)Fig. 77 SHIFT LUG AND RAIL
1 - NOTCHES (FOR 5TH GEAR SHIFT FORK ROLL PINS)
2 - LUG RAIL
3 - ROLL PIN HOLE
4 - SHIFT LUG
Fig. 78 FIRST GEAR BEARING AND SNAP RING
1 - SNAP RING
2 - FIRST GEAR BEARING
3 - MAINSHAFT SYNCHRO HUB
21 - 66 MANUAL TRANSMISSION - NV4500DR
MANUAL TRANSMISSION - NV4500 (Continued)

(2) Install first gear clutch cone on mainshaft 1-2
synchro hub with recessed side of cone facing front
(Fig. 79). Verify cone is seated against snap ring on
hub.
(3) Install snap ring on mainshaft 1-2 synchro hub
to secure clutch cone (Fig. 80). Verify snap ring is
seated in hub groove and against clutch cone.
(4) Support mainshaft in upright position to install
remaining gears, snap rings and synchro compo-
nents. Shaft can be supported in gear case or hole
can be cut in workbench to support shaft.
(5) If 1-2 synchro hub and sleeve were disassem-
bled for service, reassemble hub, sleeve, struts and
springs as follows:(a) Align and install sleeve on hub. Rotate sleeve
until it slides onto hub. Sleeve only fits one way
and will easily slide onto hub when long slot in
sleeve, aligns with long shoulder on hub (Fig. 81).
(b)
Place wood blocks under hub that will raise hub
about 3.5 cm (1.375 in.) above surface of workbench.
Then allow sleeve to drop down on hub (Fig. 82).
(c)Install springs and struts in hub (Fig. 82). Use
lots of petroleum jelly to hold them in place. Then
compress struts with your fingers and move sleeve
upward until struts are started in sleeve. Verify that
struts are engaged in sleeve before proceeding.
(d) Turn synchro assembly upright. Then move
sleeve into neutral position on hub and work struts
into sleeve at same time. Be sure struts are seated
and springs are not displaced during assembly.
Fig. 79 FIRST GEAR CLUTCH CONE
1 - MAINSHAFT 1-2 SYNCHRO HUB
2 - FIRST GEAR CLUTCH CONE
Fig. 80 FIRST GEAR CLUTCH CONE SNAP RING
1 - FIRST GEAR CLUTCH CONE
2 - MAINSHAFT 1-2 SYNCHRO HUB
3 - CLUTCH CONE SNAP RING
Fig. 81 1-2 SYNCHRO SLEEVE ON HUB
1 - ALIGN WIDE SLOT IN SLEEVE WITH WIDE SPLINE OF HUB
2 - 1-2 SLEEVE AND HUB
Fig. 82 1-2 SYNCHRO STRUTS AND SPRINGS
1 - WOOD BLOCKS
2 - HUB
3 - SLEEVE
4 - STRUTS AND SPRINGS (4 EACH)
DRMANUAL TRANSMISSION - NV4500 21 - 67
MANUAL TRANSMISSION - NV4500 (Continued)

(6) Install first gear stop ring in 1-2 synchro hub
and sleeve (Fig. 83). Verify stop ring is seated and
engaged in hub and sleeve.
(7) Install 1-2 synchro assembly and stop ring on
mainshaft with the taper on the sleeve facing for-
ward. (Fig. 84).(8) Install snap ring that secures 1-2 synchro on
mainshaft hub (Fig. 85). Verify snap ring is seated in
groove in mainshaft hub.
(9) Assemble second gear clutch cone, clutch ring
and stop ring (Fig. 86).
Fig. 83 FIRST GEAR STOP RING IN SYNCHRO HUB
Fig. 84 1-2 SYNCHRO
1 - MAINSHAFT HUB
2 - 1-2 SYNCHRO ASSEMBLY
3 - TAPERED SIDE OF SLEEVE
Fig. 85 1-2 SYNCHRO SNAP RING
1 - SYNCHRO SNAP RING
2 - 1-2 SYNCHRO ASSEMBLY
3 - MAINSHAFT HUB
Fig. 86 SECOND GEAR CLUTCH CONE, CLUTCH
RING AND STOP RING
1 - STOP RING
2 - CLUTCH RING
3 - CLUTCH CONE
21 - 68 MANUAL TRANSMISSION - NV4500DR
MANUAL TRANSMISSION - NV4500 (Continued)

(10) Install assembled second gear clutch cone and
rings on mainshaft and in 1-2 synchro hub (Fig. 87).
(11) Install snap ring that secures second gear
clutch cone on mainshaft (Fig. 88). Use narrow blade
screwdriver to work snap ring into hub groove as
shown. Verify snap ring is seated in mainshaft
groove.
NOTE: If snap ring will not fit in groove, clutch cone
is slightly misaligned.(12) Install second gear bearing on mainshaft (Fig.
89).
(13) Install second gear on mainshaft and bearing.
Rotate gear until tabs of second gear clutch ring are
seated in tab slots in gear (Fig. 90).
Fig. 87 SECOND GEAR CLUTCH CONE, CLUTCH
RING AND STOP RING
1 - CLUTCH CONE
2 - STOP RING
3 - CLUTCH RING
Fig. 88 SECOND GEAR CLUTCH CONE SNAP RING
1 - SCREWDRIVER
2 - MAINSHAFT HUB
3 - SNAP RING
4 - SECOND GEAR CLUTCH CONE
Fig. 89 SECOND GEAR BEARING
1 - SECOND GEAR BEARING
Fig. 90 SECOND GEAR
1 - SECOND GEAR
2 - CLUTCH RING TABS
3 - TAB SLOTS (IN GEAR)
DRMANUAL TRANSMISSION - NV4500 21 - 69
MANUAL TRANSMISSION - NV4500 (Continued)

(20) Install synchro stop ring on third gear (Fig.
96). Verify stop ring is seated on cone taper.
(21) If 3-4 synchro was disassembled for service,
reassemble synchro components as follows:
(a) Align and install synchro sleeve on hub (Fig.
97).Front side of hub has a narrow groove
machined in it.
(b) Insert all three synchro struts in slots
machined in sleeve and hub (Fig. 97).
(c) Install and seat synchro springs (Fig. 97).
Use screwdriver to compress springs and seat them
in struts and hub as shown.(22) Start 3-4 synchro assembly on mainshaft with
the hub groove and sleeve groove both facing for-
ward. Tap assembly onto shaft splines until hub is
about 3 mm (0.125 in.) away from third gear stop
ring. Then align stop ring with synchro sleeve and
hub and seat synchro assembly with Installer C-4040
(Fig. 98).
(23) Verify 3-4 synchro hub is seated on shaft with
approximately 3 mm (0.125 in.) of shaft spline visi-
ble.
NOTE: If hub is not seated, stop ring lugs are mis-
aligned. Rotate ring until lugs are engaged in 3-4
hub slots.
(24) Verify that second and third gear rotate freely
at this point. If not, determine the cause and correct.
(25) Invert mainshaft in case or bench.
(26) Install first gear bearing on mainshaft.
(27) Install first gear on shaft with clutch hub side
of gear facing the front of shaft (Fig. 99). Verify tabs
on clutch ring are aligned and seated in first gear
hub.
NOTE: 1-2 synchro hub will not seat properly if
clutch ring tabs are misaligned.
Fig. 96 THIRD GEAR STOP RING
1 - SYNCHRO STOP RING
2 - THIRD GEAR
Fig. 97 SYNCHRO ASSEMBLY (3-4)
1 - STRUT (3)
2 - SPRING (3)
3 - 3-4 SLEEVE
4 - 3-4 HUB
Fig. 98 SEATING 3-4 SYNCHRO ASSEMBLY ON
MAINSHAFT
1 - 3-4 SYNCHRO HUB
2 - HUB GROOVE
3 - INSTALLER C-4040
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MANUAL TRANSMISSION - NV4500 (Continued)

(28) Install reverse clutch gear on first gear (Fig.
99). Verify clutch gear is seated on shaft splines.
(29) Install reverse clutch gear snap ring with
heavy duty snap ring pliers (Fig. 99). Verify snap
ring is seated in groove.
NOTE: Reverse gear will not fit properly if snap ring
is not seated.
(30) Install stop ring on clutch cone (Fig. 100). Ver-
ify stop ring is seated on cone taper.
(31) Install reverse gear bearing spacer on main-
shaft and seat against reverse clutch gear snap ring
(Fig. 101).
(32) Install reverse gear bearing on mainshaft
(Fig. 101).
(33) If reverse gear sleeve and struts were disas-
sembled for service, reassemble sleeve, struts and
springs as follows:CAUTION: The reverse sleeve will fit either way on
the hub. Verify tapered side of the sleeve faces
rearward.
(a) Position sleeve on hub so tapered side of
sleeve faces rearward. (Fig. 102).
(b) Rotate sleeve to align teeth on sleeve and
hub. Sleeve will slide easily into place on hub when
properly aligned.
(c) Install springs in gear hub (Fig. 102). Use
petroleum jelly to hold springs in place if desired.
Fig. 102 REVERSE GEAR SYNCHRO ASSEMBLY
1 - REVERSE GEAR
2 - SLEEVE
3 - SPRING (3)
4 - STRUT (3)
5 - HUB
Fig. 99 FIRST GEAR AND CLUTCH GEAR
1 - FIRST GEAR
2 - REVERSE CLUTCH GEAR SNAP RING
3 - REVERSE CLUTCH GEAR
Fig. 100 CLUTCH GEAR STOP RING
1 - REVERSE GEAR STOP RING
2 - CLUTCH GEAR
3 - FIRST GEAR
Fig. 101 REVERSE GEAR BEARING AND SPACER
1 - REVERSE GEAR BEARING
2 - BEARING SPACER
3 - FIRST GEAR
21 - 72 MANUAL TRANSMISSION - NV4500DR
MANUAL TRANSMISSION - NV4500 (Continued)

(d) Compress first spring with flat blade screw-
driver and slide strut into position in hub slot.
Then work spring into seat in strut with small
hooked tool or screwdriver.
(e) Install second and third struts in same man-
ner as described in step (d).
(f) Work sleeve upward on hub until struts are
centered and seated in sleeve. Sleeve should be in
neutral position after seating struts.
(34) Install reverse gear and synchro assembly on
mainshaft (Fig. 103). Rotate assembly until stop ring
lugs engage in hub slots and gear drops into seated
position.
(35) Install reverse gear thrust washer (Fig. 104).
(36) Install rear bearing on mainshaft with
Installer 6446. Seat bearing on output shaft and
against thrust washer (Fig. 105).
(37) Install fourth gear stop ring in 3-4 synchro
sleeve (Fig. 106).
(38) Install fourth gear clutch gear in stop ring
(Fig. 107).
Fig. 103 REVERSE GEAR
1 - REVERSE GEAR AND SYNCHRO ASSEMBLY
Fig. 104 REVERSE GEAR THRUST WASHER
1 - THRUST WASHER
2 - REVERSE GEAR
Fig. 105 MAINSHAFT REAR BEARING
1 - INSTALLER
2 - MAINSHAFT REAR BEARING
Fig. 106 FOURTH GEAR STOP RING
1 - 3-4 SYNCHRO SLEEVE
2 - FOURTH SPEED STOP RING
Fig. 107 FOURTH GEAR CLUTCH GEAR
1 - FOURTH SPEED CLUTCH GEAR
DRMANUAL TRANSMISSION - NV4500 21 - 73
MANUAL TRANSMISSION - NV4500 (Continued)

(39) Roll gear case onto its left side.
(40) Grip mainshaft at pilot bearing hub and just
behind reverse gear. Then lift assembly and guide
rear of shaft through bearing bore at rear of case.
(41) Continue holding front of shaft but switch
grip at rear to shaft output splines. Lift mainshaft
assembly slightly, align gears and seat assembly in
case.
(42) Set transmission case upright (Fig. 108).
(43) Install drive gear thrust bearing on mainshaft
(Fig. 109). Use plenty of petroleum jelly to hold bear-
ing in place.
(44) Check alignment and mesh of mainshaft
gears. If gears are not aligned, roll case on side and
realign shaft and gears in case.DRIVE GEAR AND RETAINER
(1) Install bearing on drive gear with Installer
6448 (Fig. 110).
(2) Lubricate pilot bearing with petroleum jelly
and install it in drive gear bore.
(3) Install drive gear on mainshaft. Work gear
rearward until mainshaft hub is seated in pilot bear-
ing.
(4) Install bearing cup in front retainer with Han-
dle C-4171 and Installer C-4308 (Fig. 111).
Fig. 108 MAINSHAFT AND GEARTRAIN IN CASE
1 - MAINSHAFT AND GEARTRAIN
2 - FOURTH SPEED CLUTCH GEAR
Fig. 109 DRIVE GEAR THRUST BEARING
1 - MAINSHAFT
2 - DRIVE GEAR THRUST BEARING
Fig. 110 FRONT BEARING ON DRIVE GEAR
1 - INSTALLER
2 - BEARING
3 - DRIVE GEAR
Fig. 111 FRONT BEARING CUP IN RETAINER
1 - INSTALLER
2 - HANDLE
3 - WOOD BLOCKS
4 - RETAINER
21 - 74 MANUAL TRANSMISSION - NV4500DR
MANUAL TRANSMISSION - NV4500 (Continued)

(8) Assemble and install fifth synchro clutch gear
and stop ring in fifth gear hub (Fig. 124). Verify
parts are seated in fifth gear hub.
(9) Install clutch gear snap ring (Fig. 125).
(10) Align roll pin holes in shift fork with notches
in shift lug rail. Then install roll pins from top side
of fork (Fig. 122).
NOTE: Roll pins only fit one way due to small
shoulder at one end of each pin.
FIFTH GEAR NUT
(1) Install belleville washer onto the mainshaft.
(2) Install fifth gear nut over the mainshaft.
(3) Tighten the clamp bolt until the gap in the
clamp nut assembly is closed.
(4) Back the clamp bolt off one full turn.(5) Place 10-15 drops of Loctite 272 onto the main-
shaft threads where the fifth gear nut will be
engaged.
(6) Install fifth gear nut on mainshaft (Fig. 126).
(7) Hold mainshaft Socket 6993 4X2 or Socket
6984 4X4 while installing the fifth gear nut.
(8) Tighten fifth gear nut as much as possible with
Wrench 6743, long handle ratchet, breaker bar and
applicable socket wrench (Fig. 127).
(9) Lock mainshaft gears by shifting all synchro
sleeves into engaged position.
Fig. 124 FIFTH SYNCHRO CLUTCH GEAR AND
STOP RING
1 - STOP RING
2 - CLUTCH GEAR
Fig. 125 FIFTH SYNCHRO CLUTCH SNAP RING
1 - CLUTCH GEAR RING
2 - FIFTH SYNCHRO CLUTCH GEAR
Fig. 126 FIFTH GEAR NUT
1 - FIFTH GEAR
2 - FIFTH GEAR NUT
Fig. 127 FIFTH GEAR NUT
1 - WRENCH
2 - FIFTH GEAR NUT
3 - SOCKET
21 - 78 MANUAL TRANSMISSION - NV4500DR
MANUAL TRANSMISSION - NV4500 (Continued)