2003 JEEP GRAND CHEROKEE Workshop Manual

Page 1673 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual BOOST VALVE
The boost valve (Fig. 277) provides increased fluid
apply pressure to the overdrive clutch during 3-4
upshifts (Fig. 278), and when accelerating in fourth
gear. The boost valve also serves

Page 1674 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual DISASSEMBLY
CAUTION: Do not clamp any valve body component
in a vise. This practice can damage the component
resulting in unsatisfactory operation after assembly
and installation. Do not use pliers to

Page 1675 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual (12) Secure detent ball and spring with Retainer
Tool 6583 (Fig. 287).
(13) Remove park rod E-clip and separate rod from
manual lever (Fig. 288).
(14) Remove E-clip and washer that retains throt-
tle

Page 1676 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual (16) Position pencil magnet next to detent housing
to catch detent ball and spring. Then carefully
remove Retainer Tool 6583 and remove detent ball
and spring (Fig. 291).
(17) Remove screws attaching

Page 1677 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual (18) Remove adjusting screw bracket, line pressure
adjusting screw, pressure regulator valve spring and
switch valve spring (Fig. 293). Do not remove throttle
pressure adjusting screw from bracket and

Page 1678 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual Fig. 294 Upper Housing Control Valve Locations
1 - UPPER HOUSING 8 - MANUAL VALVE
2 - REGULATOR VALVE 9 - 1-2 GOVERNOR PLUG
3 - SWITCH VALVE 10 - GOVERNOR PLUG COVER
4 - REGULATOR VALVE SPRING 11 - TH

Page 1679 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual (25) Remove boost valve connecting tube (Fig.
299). Disengage tube from upper housing port first.
Then rock opposite end of tube back and forth to
work it out of lower housing.
CAUTION: Do not use too

Page 1680 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual Fig. 301 ECE Check Ball
1 - ECE CHECK BALL (3/169)
Fig. 302 Transfer Plate
1 - UPPER HOUSING
2 - TRANSFER PLATE
Fig. 303 Upper Housing Separator Plate
1 - TRANSFER PLATE
2 - UPPER HOUSING SEPARATOR PL