Jeep Wrangler 1997 Manual - page 910
adjustment or a worn/damaged pressure plate or disc
can cause incorrect release. If the 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 during nor-
mal 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 breakage.
REMOVAL AND INSTALLATION
TRANSMISSION
REMOVAL
(1) Shift transmission into first or third gear.
(2) Raise and support vehicle on suitable safety stands.
(3) Disconnect necessary exhaust system components.
(4) Remove skid plate, if equipped.
(5) Remove slave cylinder from clutch housing.
(6) Mark rear propeller shaft and rear axle yokes
for installation alignment (Fig. 5).
(7) Mark front propeller shaft, axle, and transfer
case yokes for installation alignment, if equipped.
(8) Remove propeller shaft(s).
(9) Unclip wire harnesses from transmission and
transfer case, if equipped.
(10) Disconnect
transfer
case
vent
hose,
if
equipped.
(11) Disengage any wire connectors attached to trans-
mission or transfer case, if equipped, components.
(12) Support transfer case, if equipped, with trans-
mission jack.
(13) Secure transfer case, if equipped, to jack with
safety chains.
(14) Disconnect transfer case shift linkage at
transfer case, if equipped.
(15) Remove nuts attaching transfer case to trans-
mission, if equipped.
(16) Remove transfer case, if equipped.
(17) Remove crankshaft position sensor (Fig. 6),
(Fig. 7).
CAUTION: It is important that the crankshaft posi-
tion sensor be removed prior to transmission
removal. The sensor can easily be damaged if left
in place during removal operations.
(18) Support engine with adjustable jack stand.
Position wood block between jack and oil pan to
avoid damaging pan.
(19) Support transmission with transmission jack.
(20) Secure
transmission
to
jack
with
safety
chains.
(21) Disconnect rear cushion and bracket from
transmission.
(22) Remove rear crossmember.
(23) Disconnect transmission shift lever as follows:
(a) Lower
transmission–transfer
case
assembly
approximately 7–8 cm (3 in.) for access to shift lever.
(b) Reach up and around transmission case and
unseat shift lever dust boot from transmission shift
tower (Fig. 8). Move boot upward on shift lever for
access to retainer that secures lever in shift tower.
Fig. 5 Marking Propeller Shaft And Axle Yokes
Fig. 6 Crankshaft Position Sensor—2.5L Engine
21 - 4
TRANSMISSION AND TRANSFER CASE
TJ
DIAGNOSIS AND TESTING (Continued)