E39 - Alternator

A free template by Lucknowwebs.com for WYSIWYG WebBuilder 8

Diary of a Second Hand 15 year old Beamer (Maintenance - Battery Drain included...,
BMW E39 520i year 2000 Engine 1995cc)
M Series.

fig. Boot - Rear Fuse Cluster

Workshop/Diary- Alternator

fig. Source - Air intake

Some Differences - Some Air Intake Moulding Can Be Interchangable, however if not, the Alternator can still be used, as long as there is good air supply or ventilation around the unit.

fig. Source - Five Ribbed Pully

fig: Positive Supply - Note: No Air intake
Moulding on this replacement model.

fig. Note: If you have an AC on your vehicle you will require the 3 pin connection, some alternators have 2 or 1 pin connections.

1. Ideally, brace Alternator Unit in Bench Vice.

2. Small holes, (on this model) for 2 small screw drivers situated 1 to 2
    O'Clock and 7 to 8 O' Clock (To prevent pully movement).

Note:a) Be careful not to damage the fan, ( make sure the fins are bent
             back to the correct angle when the pully has been replaced).
         b) Be careful not to damage internal wiring.

To Dismantle Pully, without using Air Tools

Air tools does make life a little easier, if you have them, good for you! However like me, and you haven't:

(See Tools for Fan Belt Tensioner Page 26)

01st March 2015 - Do you ever get the feeling, something or someone is trying to tell you something...I do. and it is becoming more often than not! At around 3 o'clock in the afternoon, rain had stayed off, I thought I would have a go with this alternator as the job needed to be completed. I Started the job, managed to get the belt and alternator off again, the nut came off with my new extension bar, everything was going well, unitl I placed the pully onto the replacement alternator - the shaft was too short for the pully. The clouds decided to also tip their load and the winds increased to: 'blow the bonnet down speed', "what the H@~L?"

It just left one option - clean up and strip the old 90 amp alternator down and see what was going on under it's covers.
- The bushes were good
- Bearing seemed ok