2003 DODGE RAM Service Repair Manual

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Page 1841 of 2895

DODGE RAM 2003 Service Repair Manual Fig. 1 NV3500 TRANSMISSION
21 - 2 MANUAL TRANSMISSION - NV3500DR
MANUAL TRANSMISSION - NV3500 (Continued)

Page 1842 of 2895

DODGE RAM 2003 Service Repair Manual DIAGNOSIS AND TESTING
LOW LUBRICANT LEVEL
A low transmission lubricant level is generally the
result of a leak, inadequate lubricant fill or an incor-
rect lubricant level check. Leaks can occur at th

DIAGNOSIS AND TESTING
LOW LUBRICANT LEVEL
A low transmission lubricant level is generally the
result of a leak, inadequate lubricant fill or an incor-
rect lubricant level check. Leaks can occur at the
mating surfaces of the gear case, adaptor or exten-
sion housing, or from the front/rear seals. A sus-
pected leak could also be the result of an overfill
condition.
Leaks at the rear of the extension or adapter hous-
ing will be from the housing oil seals. Leaks at com-
ponent mating surfaces will probably be the result of
inadequate sealer, gaps in the sealer, incorrect bolt
tightening or use of a non-recommended sealer.
A leak at the front of the transmission will be from
either the front bearing retainer or retainer seal.
Lubricant may be seen dripping from the clutch
housing after extended operation. If the leak is
severe, it may also contaminate the clutch disc caus-
ing the disc to slip, grab and or chatter.
A correct lubricant level check can only be made
when the vehicle is level. Also allow the lubricant to
settle for a minute or so before checking. These rec-
ommendations will ensure an accurate check and
avoid an underfill or overfill condition. Always check
the lubricant level after any addition of fluid to avoid
an incorrect lubricant level condition.
HARD SHIFTING
Hard shifting is usually caused by a low lubricant
level, improper or contaminated lubricants. The con-
sequence of using non-recommended lubricants is
noise, excessive wear, internal bind and hard shift-
ing. Substantial lubricant leaks can result in gear,
shift rail, synchro, and bearing damage. If a leak
goes undetected for an extended period, the first indi-
cations of component damage are usually hard shift-
ing and noise.
Shift component damage or damaged clutch pres-
sure plate or disc are additional probable causes of
increased shift effort. Worn/damaged pressure plate
or disc can cause incorrect release. If clutch problem
is advanced, gear clash during shifts can result.
Worn or damaged synchro rings can cause gear clash
when shifting into any forward gear. In some new or
rebuilt transmissions, new synchro rings may tend to
stick slightly causing hard or noisy shifts. In most
cases this condition will decline as the rings wear-in.
TRANSMISSION NOISE
Most manual transmissions make some noise dur-
ing normal operation. Rotating gears generate a mild
whine that is audible, but generally only at extreme
speeds.Severe highly audible transmission noise is gener-
ally the initial indicator of a lubricant problem.
Insufficient, improper or contaminated lubricant will
promote rapid wear of gears, synchros, shift rails,
forks and bearings. The overheating caused by a
lubricant problem, can also lead to gear and bearing
damage.
REMOVAL
(1) Disconnect battery negative cable.
(2) Shift transmission into Neutral.
(3) Remove shift boot bezel screws and slide boot
upward on shift lever extension.
(4) Remove shift lever extension from the shift
tower and lever assembly.
(5) Raise vehicle on hoist.
(6) Remove skid plate, if equipped.
(7) Drain lubricant if transmission will be disas-
sembled for service.
(8) Mark propeller shaft/shafts and companion
flange yoke/yokes for installation reference and
remove propeller shaft/shafts.
(9) Disconnect harness from clips on transmission
housing.
(10) Remove transfer case linkage if equipped.
(11) Remove transfer case mounting nuts and
remove transfer case if equipped.
(12) Remove slave cylinder mounting nut and
remove cylinder (Fig. 2).
Fig. 2 SLAVE CYLINDER
1 - MOUNTING NUTS
2 - SLAVE CYLINDER
DRMANUAL TRANSMISSION - NV3500 21 - 3
MANUAL TRANSMISSION - NV3500 (Continued)

Page 1843 of 2895

DODGE RAM 2003 Service Repair Manual (13) Remove starter motor, structural dust cover,
dust shield and suspension crossmember (Fig. 3).
(14) Remove exhaust pipe from the exhaust mani-
folds.
(15) Support engine with adjustable jack stand

Page 1844 of 2895

DODGE RAM 2003 Service Repair Manual (6) Remove shift shaft lock bolt (Fig. 7) from the
top of front housing. The bolt secures the shift shaft
bushing and lever.
NOTE: This is a special bolt and can not be substi-
tuted with any other bo

Page 1845 of 2895

DODGE RAM 2003 Service Repair Manual (10) Remove shift shaft detent plug from the side
of the transmission with Remover 8117A. Attach fin-
gers of the remover to the detent plug and push the
cup down till it contacts the trans. Then tigh

Page 1846 of 2895

DODGE RAM 2003 Service Repair Manual (15) Note position of input shaft, shift shaft, forks
and geartrain components in housing (Fig. 14).
SHIFT/FORK SHAFTS AND REVERSE IDLER
SEGMENT
(1) Place a shop towel over the shaft lever to con-
tai

Page 1847 of 2895

DODGE RAM 2003 Service Repair Manual (7) Pull shift shaft straight out of rear housing,
shift socket, fifth-reverse fork and 1-2 fork (Fig. 18).
(8)
Remove shift socket from rear housing (Fig. 19).
(9) Remove shaft lever and bushing (Fig

Page 1848 of 2895

DODGE RAM 2003 Service Repair Manual (12) Remove reverse idler shaft support segment
by sliding it straight out of housing.
(13) Support geartrain and rear housing on Fix-
ture 6747 as follows:
(a) Adjust height of reverse idler pedestal

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