WIPER MOTOR ASSEMBLY REMOVAL AND INSTALLATION Fig 29 1 If possible place motor in park position and disconnect battery ground cable 2 Remove wiper blade and arm assemblies 3 Remove plenum chamber grille 4 Loosen nuts retaining drive arm to crank arm ball stud View B fig 29 5 Disconnect all wiring and washer hose connections at the motor and pump assembly 6 Remove bolts retaining motor to firewall while supporting the motor assembly and remove motor from vehicle 7 To install check sealing gasket and bolts then position motor to the firewall and install retaining bolts 8 Attach drive link socket to crank arm ball joint and tighten nuts 9 Install plenum chamber grille 10 Install wiper blade and arm assemblies 11 Connect all wiring connection and washer hoses 12 Connect battery ground cable and check operation of unit DISASSEMBLY Gear Box Refer to Figure 30 for explode of motor and gear train 1 Clamp crank arm in a vise and remove crank arm retaining nut NOTE Remove washer pump assembly and washer drive cam on wipers so equipped Drive cam can be pried off using suitable tool fig 31 v v v 9 10 8 6 7 3 4 5 1 Fig 30 Wiper Motor and Gi 1 Nut 6 Gear Box Cover 2 Crank Arm 7 Output Gear and 3 Seal Cap Shaft Assembly 4 Retaining Ring 8 Intermediate Gear 5 Washer 9 Wave Washer 10 Gear Box Housing 00 o V o o 0 0 VIEW A o s VIEW B 1 7 w B v Fig 29 Windshield Wiper Assembly 2 Remove crank arm seal cap Tru Arc retaining ring flat washer and shims where applicable 3 Drill out gear box cover retaining rivets remove cover from gear train NOTE Mark ground strap location for proper reinstallation 4 Remove output gear and shaft assembly and slide intermediate gear and pinion assembly off shaft 12 13 v 18 W 0 19 17 16 15 14 11 w Box Exploded View Typical 11 Brush Plate 15 Armature Assembly and 16 Thrust Plug Mounting Brackets 17 Frame and Field 12 Brushes 18 End Plate 13 Wave Washers 19 Tie Bolts 14 Flat Washers Two required