740 alternator

Thread Tools
 
Search this Thread
 
  #1  
Old 10-15-2008, 05:57 AM
sventhevolvo's Avatar
Thread Starter
Join Date: Oct 2008
Posts: 7
Likes: 0
Received 0 Likes on 0 Posts
Default 740 alternator

Howdy All,

New to this Forum, hope someone will be able to give me some guidance on this:

The replacement alternator on my '87 740GL automatic stopped charging, so I went off to a local scrapyard having the nearest thing to a Volvo 740 in it, which happened to be a 940 Turbo Estate. The alternator and engine looked lovely and clean but the instruments had been removed from the dash, so I couldn't tell the mileage.

As you'll know the 940 alternator is mounted high up on the left side of the engine (left, looking from the inside of the car, that is), while the 740 alternator is mounted low down on the right side. The distance between the mounting lugs looked the same, so I bought the 940 alternator and brought it home. After fitting the 940 unit and wiring it up as per the old one, I started up the car and after a very short time noticed an interesting hot rubber smell and some wispy smoke appearing, but I couldn't see where from. The alternator itself wasn't moving at all, indeed it seemed to be wanting to go in the opposite direction to that of the engine! Of course I stopped the engine immediately and disconnected the battery.

I have to admit to being able to effortlessly blow up, burn up or otherwise ruin almost any electrical appliance of any kind. Some people shouldn't go near electrical things and I'm one of them, but being pretty well broke most of the time, needs must, I'm afraid.

Now I'm left with a non-running car and, it would seem, an incompatible alternator.

Any ideas about what I need to do next? Be as blunt as you like, I can take it!

Sven
 
  #2  
Old 10-15-2008, 07:32 AM
tech's Avatar
Administrator
Join Date: Sep 2004
Location: Orlando, Florida
Posts: 36,351
Likes: 0
Received 40 Likes on 38 Posts
Default RE: 740 alternator

If it looked exactly the same then it should have worked.
They both spin the same direction. Was the new one spinning freely before you installed it?
Maybe the pulley offset is different and something is hitting somewhere?


 
  #3  
Old 10-30-2008, 05:48 AM
sventhevolvo's Avatar
Thread Starter
Join Date: Oct 2008
Posts: 7
Likes: 0
Received 0 Likes on 0 Posts
Default RE: 740 alternator

Many thanks for this, Tech. Sorry to have taken so long to respond, but my PC went the way of the alternator a few minutes after my posting! Got it back yesterday evening, so I'm able to thank you at last. The problem has been resolved by having the old alternator repaired and I have reinstalled it as before. All well now.

Thanks again.

Sventhevolvo.
 
  #4  
Old 10-30-2008, 08:48 AM
tech's Avatar
Administrator
Join Date: Sep 2004
Location: Orlando, Florida
Posts: 36,351
Likes: 0
Received 40 Likes on 38 Posts
Default RE: 740 alternator

Glad all is good now.
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
dnarby
Volvo 240, 740 & 940
4
07-08-2013 12:16 PM
Mike740Turbo
Volvo 240, 740 & 940
10
07-04-2012 02:53 PM
pooky85
Volvo 240, 740 & 940
2
04-30-2011 08:33 PM
aimeesvolvo
Volvo 240, 740 & 940
4
04-25-2009 01:10 PM
TedH
Volvo 240, 740 & 940
4
03-20-2006 08:32 PM



Quick Reply: 740 alternator



All times are GMT -5. The time now is 08:32 PM.