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Technical Service Manual January 1975
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3 14 ELECTRICAL n A Lowes weren suouuz F annum mmcne s nuuncares A serweeu snonren on a Ann zso A cnouunsn onus neto cancun uuctunmo l 1l ERNAT0R 2 jd iQ ser oummsren Y S 0 O gEcgm1P cRrvxlilFAu renmiunss F KN A AT usouraron etuc I i 7 soon r L FIq 3 9 R g l tnrConn m rJump rwIn Cannntlon llqulalnrlypamdl W z 2 2 V sono n F 4 r Fly H Crcunm Fl ld Clrcull Tm Q Q 2 sg I l ohms indicates a shorted condition More than 250 SRL wl E ohms indicates an open condition or dirty brushes or 4 slip rings nc 0 I 5 NOTE Alternator will lmve to be disassembled to wi determine if the problem is brushes or mtor Refer to 5 N the Rotor Continuity Test lumpen wi as conueggggo 4 If alternator brush or rotor circuit are within 5li lli ANn i o specifications proceed to step 5 If a shorted condi T M s 6 2 tion was indicated in step 3 the voltage regulator may have been damaged and the regulator field circuit n 3 1g Mmnmr Jn wm gnnnmlnns must be checked as follows 5 Connect an ohmmeter between regulator ter minals I and F Ohmmeter should indicate no resist ance If approximately 10 ohms are indicated reeulawr should be renlwedn Dvnrcnargu Trnuhlcslmutlnq Pruwlun 6 Connect s Jumper wire between A and F ter minals of regulator connector fig 3 9 and repeat out Perform Output No Load Test to determine if an put test lf output voltage is as specified replace overcharge condition exists before performing this pro l Bg 1l3CUI C d 1l 7 Disconnect jumper wipe installed in step 5 1 Clean and tighten ground connections at alter and leave regulator connector removed Disconnect Haw 8 l Z l3 T R P9 l 0 P T t wire harness from FLD terminal of alternator and 2 D 0 9 l B l8W m f 0l from la connect jumper wnc between BAT and FLD terminals and repeat Output Test If volwse is as f e i re of alternator fig 3 10 Repeat output test PlM Y K l 0 3 If voltage still remains above specifications al If output is as specified replace alternator wire har ternator wire harness is shorted and must be replaced ness If output is still below specification alternator is Voltage regulator must be replaced also since the faulty and must be tested and repaired shorted condition will damage it