armature worm to mesh properly with gear teeth 8 Install tie bolts 8 Operate wiper motor and tap the case assembly lightly with a mallet to realign the bearings 10 Reassemble gear box as required Adjustments Armature End Play Loosen end play adjusting screw lock nut Figure 8 153 and tighten the adjusting screw until finger tight Then back off 2 4 turn and tighten lock nut Gear Shaft End Play Remove crank arm seal cap and retaining ring Figure 8 148 Add or remove end play washers as required to obtain 005 maximum end play f TROUBLE SHOOTING L Wiper Installed in Gar Types of Troubles A Wiper Inoperative B Wiper Will Not Shut Off C Wiper Has One Speed Fast D Wiper Has One Speed Slow E Wiper Will Not Park Blades Correctly F Wiper Speed Normal in Lo Too Fast in Hi G Intermittent Operation A Wiper Inoperative 1 With ignition switch On check power source 12 V to center or 2 terminal of wiper terminal board fig 8 153 2 To determine if dash switch or car wiring is the source of trouble try to operate the wiper as I shown in Figure 8 153 If wiper still fails to operate remove body parts as required to gain access to wiper transmissions j Disconnect transmissions from wiper crank arm and recheck to see if wiper will operate If wiper still fails to operate remove it from car i and check it according to the procedures outlined in Trouble Shooting Wiper Detached i Wiper Will Not Shut ON l Check if wiper has both Lo and Hi speeds If wiper has only Lo speed see Item D If wiper has only Hi speed see Item C If wiper has both speeds proceed to Step 2 2 By pass car wiring and dash switch and operate as shown in Figure 8 153 3 Disconnect jumper wire 2 Wiper should shut off when blades reach park position Wiper still fails to shut off Park switch contacts probably not opening Remove wiper from car and repair or replace parking switch contacts Wiper shuts off correctly Check for a grounded condition in car wiring lead that connects to wiper terminal No 1 C Wiper Has One Speed Fast 1 By pass car wiring and dash switch and connect up wiper as shown in Figure 8 153 This should operate in Lo speed approximately 35 45 wipes per minute Wiper operates correctly Check that leads from terminal 3 to dash switch is not open If lead is not open switch is at fault Wiper still has one speed Fast Remove wiper from car and follow procedures outlined under Trouble Shooting Wiper Detached D Wiper Has One Speed Slow 1 By pass car wiring and dash switch and connect up wiper as shown in Figure 8 153 This should operate wiper in Lo speed Next disconnect jumper wire 1 This should operate wiper in Hi Wiper operated correctly Has both speeds Look for a grounded condition in the wire between wiper terminal 3 and dash switch Wiper still has one speed Slow Remove wiper from car and check for a ground in the wiper motor black wire that connects to 3 terminal E Wiper Will Not Park Blades Correctly i e when dash switch is turned to Off position blade movement stops immediately regardless of blade position on windshield 1 Remove wiper from car and check that parking switch contacts are not bent dirty or broken F Wiper Speed Normal in Lo But Too Fast in Hi 1 Remove wiper from car and check for an open terminal board resistor G Intermittent Operation Wiper cycles on and off automatically 1 Remove wiper from car and follow intermittent Operation checking procedures outlined under Trouble Shooting Wiper Detached Wiper Detached from Car Check wiper operation as follows Lo Speed Using an ammeter in the feed wire circuit from battery connect up wiper as shown in Figure 8 153 Hi Speed Disconnect jumper lead No 1 from No 3 terminal To Park Wiper Leave jumper lead No 1 connected and disconnect jumper lead No 2 from ground