Repair of Alternator

by Scott Fabre

Last Update: 08/04/2005

 

Replacement in the field and bench rebuild of alternator

The alternator decided to start making a raspy sound about the time I entered Montana. It later seized up just as I was pulling into the motel parking lot stall. I rented a car to finish my journey then a few days later returned to replace the alternator using a few cheap tools I picked up. Greg VanDeventer was kind enough to FedEx me a spare he had. A real classy guy.

 

Parking Lot part of the repair then there is another one on the on the rebuild once I got the unit back home.

 

The pictures tell the story. If you want to see the thumbnail larger then click on it, but of course you knew that already.

 

 

Parking Lot

plenum popping fun

Not too many tools really needed.

 

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Rebuilding the Alternator

This unit is a 120amp capacity.

August 16, 2002

 

This page also contains the replacement of the ignition coils. Might as well while I am in there.
 
Pulley off first then to
 

the real fun !!

socket for nut

Toasted Bearing

See debris?

more debri

falls out

rear bearing hold

diode assembly

crap in holder

destroyed race

clearing the old

New Kit

cut race off

six diodes

clean diode pack

new one not used

time to clean

anode hole

clean heat sink

two halfs

Now the front

this was an SOB

The screws

on the INSIDE!

tricky plate inside

now pulling

the bearing

spacer too

the inside plate

Inserting the new

bearing

shaft before

rust

oxidized

clean after

shiny after clean

reinsert w/spacer

remember spacer

outside spacer

now fan blade

yet another spacer

add pulley

spacer

nut

put diode pack

back in other

new plastic

new bearing on

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inside view

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tapping in set screw

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assemble halves

tighten set screw

use loctite

nee coils

have to remove

these tabs

another view

tabs removed

one in

all in

labeled

Three

Red Vettes

 

 

  Disclaimer:  Repairs and techniques are reported here by amateurs and professionals as an informational opinion service only and should not be attempted by other than factory trained and certified technicians. The ZR1 Net does not recommend anyone doing these procedures and is not responsible for any adverse outcome. Factory repair manuals should always be used and followed to the letter in conjunction with any repair or maintenance performed. All cautions and warnings that appear in the factory manuals apply here as well. As recommended in all service manuals, proper eye and body protection as well as proper tools must be used for any maintenance performed by individuals. Working on automobiles is dangerous and could result in personal and/or property injury. If you do not have the proper tools or know-how, you should not do any of these procedures, but have a qualified technician perform the work.  
   

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