Grand Cherokee 2WD L6-4.0L VIN S (1997)
a. Insert Special Tool 6312, or equivalent through sun gear, planetary gear and into pilot bushing in output shaft. Be sure tool bottoms against
planetary shoulder.
b. Position Gauge Tool 6311, or equivalent across face of overdrive case. Then position Dial Caliper C-4962, or equivalent over gauge tool.
c. Extend sliding scale of dial caliper downward through gauge tool slot until scale contacts end of Gauge Alignment Tool 6312, or equivalent.
Lock scale in place. Remove dial caliper tool and note distance measured.
d. Select proper thickness end play spacer from spacer chart based on distance measured.
e. Remove Gauge Alignment Tool 6312, or equivalent.
OD THRUST PLATE SELECTION
1. Place overdrive unit in vertical position. Mount it on blocks, or in workbench with appropriate size mounting hole cut into it. Be sure unit is facing
upward for access to direct clutch hub. Also be sure output shaft is not loaded and internal components are moved rearward for accurate
measurement.
2. Determine correct thickness overdrive piston thrust plate as follows:
a. Position Gauge Tool 6311, or equivalent across face of over drive case. Then position Dial Caliper C-4962, or equivalent over gauge tool.
b. Measure distance to clutch hub thrust bearing seat at four points 90° apart. Then average measurements by adding them and dividing by 4.
