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OVERDRIVE UNIT REMOVAL (1) Shift transmission into Park. pinion yoke for alignment reference at installation. (4) Disconnect and remove propeller shaft(s). drain oil and reinstall pan. (6) If overdrive unit had malfunctioned, or if fluid is contaminated, remove entire transmission. If diag- (7) Support transmission with transmission jack. mission (Fig. 58). CAUTION: Support the overdrive unit with a jack (10) Carefully work overdrive unit off intermediate shaft. Do not tilt unit during removal. Keep it as (11) If overdrive unit does not require service, immediately insert Alignment Tool 6227-2 in splines (12) Remove and retain overdrive piston thrust bearing. Bearing may remain on piston or in clutch (13) Position drain pan on workbench. to drain residual fluid from case. (15) Examine fluid for clutch material or metal fragments. If fluid contains these items, overhaul will (16) If overdrive unit does not require any service, leave alignment tool in position. Tool will prevent INSTALLATION (1) Be sure overdrive unit Alignment Tool 6227-2 is fully seated before moving unit. If tool is not Fig. 56 Manual Lever Shaft Seal 1 – 15/16 88 SOCKET 2 – SEAL Fig. 57 Accumulator Piston Components 1 – INNER SPRING Fig. 58 Overdrive Unit Bolts 1 – OVERDRIVE UNIT 21 - 46 TRANSMISSION AND TRANSFER CASE WJ REMOVAL AND INSTALLATION (Continued) 2000 JEEP GRAND CHEROKEE |