ACDelco 26 SI User Manual

26-SI ALTERNATOR 1G/287 4/96 PAGE1G-287HEAVY DUTYBRUSHLESS ALTERNATORSERVICE MANUAL©1998 Delco Remy Internation

PAGE 1G-287 4/96 26-SI ALTERNATORALTERNATOR UNIT REPAIRCAUTION: Disconnect grounded cable at batterybefore removing or a

26-SI ALTERNATOR 1G/287 4/96 PAGEFIELD COIL3. Disconnect 2 field leads from regulator (9) by removing2 insula

PAGE 1G-287 4/96 26-SI ALTERNATOR6. Use ohmmeter or diode check function on multimeterto check diode trio (15). (See Fig.

26-SI ALTERNATOR 1G/287 4/96 PAGERECTIFIER DIODES8. Disconnect the 6 diode leads from the 3 diode junctionstuds

PAGE 1G-287 4/96 26-SI ALTERNATOR11. NOTICE: Do not hit diodes or diode mountings witha hammer or other tool. The shock

26-SI ALTERNATOR 1G/287 4/96 PAGEhousing (1) apart carefully. Guide stator leads andgrommet (48) through hole

PAGE 1G-287 4/96 26-SI ALTERNATOR17. To replace rotor (4) or drive end bearing (7), (See Fig.27) remove 4 bearing retaine

26-SI ALTERNATOR 1G/287 4/96 PAGE ALTERNATOR ASSEMBLYASSEMBLY OF DE FRAME AND ROTOR INSTALL OR CONNECT1. Pre

PAGE 1G-287 4/96 26-SI ALTERNATORLightly lubricate outside surface of hinge bushing (44).Press hinge bushing into hole in

26-SI ALTERNATOR 1G/287 4/96 PAGE9. Push square plastic retainers for diode junction studs(13) into square hol

PAGE 1G-287 4/96 26-SI ALTERNATORFEATURES302.5 mm198.0 mmSPECIFICATIONS:MAXIMUM SPEED:Continuous: 10,000 rpmIntermittent

PAGE 1G-287 4/96 26-SI ALTERNATOR11. Place insulator (17b) on output terminal (17a) andinstall through hole in housing (1

26-SI ALTERNATOR 1G/287 4/96 PAGEFINAL ALTERNATOR ASSEMBLY15. CLEANInner race of rectifier end bearing (on rot

PAGE 1G-287 4/96 26-SI ALTERNATOR20. Place clip of red diode trio lead over hole in heat sink,then install insulator (51)

26-SI ALTERNATOR 1G/287 4/96 PAGE25. TIGHTENRegulator and mounting plate screws (holes A, B, C,and D) to 3 N.m

PAGE 1G-287 4/96 26-SI ALTERNATORcenter hole. Replace gasket with a new one if at allquestionable. Wipe edges of rectif

26-SI ALTERNATOR 1G/287 4/96 PAGEALTERNATOR BENCH TEST TEST EQUIPMENT NEEDED:• Alternator Test Stand (500

PAGE 1G-287 4/96 26-SI ALTERNATOR- If voltage increases above 15 volts on 12-volt system(or above 31 volts on 24-volt sys

26-SI ALTERNATOR 1G/287 4/96 PAGEALTERNATOR MOUNTINGCAUTION: Failure to disconnect grounded batterycable at ba

PAGE 1G-287 4/96 26-SI ALTERNATOR5. Alternator belt to pulley.6. If engine uses automatic belt tensioner (idler), skip to

26-SI ALTERNATOR 1G/287 4/96 PAGE INSTALL OR CONNECT11. Ground lead, if used, to ground hole in rectifie

26-SI ALTERNATOR 1G/287 4/96 PAGEPRODUCT INFORMATION AND SERVICE MANUAL26-SI HEAVY DUTY BRUSHLESS ALTERNATORCON

PAGE 1G-287 4/96 26-SI ALTERNATOR28SERVICE PARTSIllus.No. Name Qty.1. Housing, Rectifier End 12. Bearing, Rectifier E

26-SI ALTERNATOR 1G/287 4/96 PAGE 29274648549298421227643282342522634203332194735363840419251516302418455623441

PAGE 1G-287 4/96 26-SI ALTERNATORDelco Remy International, Inc.2902 Enterprise DriveAnderson, IN 46013For further informa

PAGE 1G-287 4/96 26-SI ALTERNATORFEATURESThe 26-SI alternator is designed for a “one-wire” chargingsystem configuration.

26-SI ALTERNATOR 1G/287 4/96 PAGEbe passed through this circuit to aid in alternator turn-on.An “I” terminal is

PAGE 1G-287 4/96 26-SI ALTERNATORTROUBLESHOOTINGTrouble in the charging system will normally be indicatedby one of the fo

26-SI ALTERNATOR 1G/287 4/96 PAGE- If indicator light does not come on with jumper lead inplace, verify that al

PAGE 1G-287 4/96 26-SI ALTERNATORE. NO OUTPUTTEST EQUIPMENT NEEDED:• Voltmeter• Jumper Lead (18 ga. min; no fuse)Note t

26-SI ALTERNATOR 1G/287 4/96 PAGE8. Recheck voltage at insulated battery terminal. Voltageshould be higher tha