Pagoda SL Group

W113 Pagoda SL Group => Drive train, fuel, suspension, steering & brakes => Topic started by: Lew on January 17, 2023, 00:23:05

Title: Fuel pump motor
Post by: Lew on January 17, 2023, 00:23:05

I am in the process of rebuilding the fuel pump and decided to take the fuel motor apart.  The motor o rings were leaking. In the process of dismantling the motor the front shaft bushing popped out along with 3 other pieces (see photo).  My question is, is the order of reassembly from left to right in the photo?

Also, the commutator has a lot of wear.  Is it still functional, or do I need to replace?   Thanks for any help......

 
 

Title: Re: Fuel pump motor
Post by: WRe on January 17, 2023, 06:43:11

Hi,
maybe you can change the old ball bearings against self-lubricating bearings as I did it with the blower motor, see https://www.sl113.org/forums/index.php?topic=30569.msg221711#msg221711. Check the measures, maybe the same!
...WRe

Title: Re: Fuel pump motor
Post by: BobH on January 17, 2023, 10:29:14

Hello, there are good write ups and diagrams in the technical manual for both types of pump, just search "fuel pumps" in the tech manual section

With regard to your commutator, i would get this refurbished by a suitable motor rewind company, you don't want to rebuild your pump and then have to take it all apart again in the near future if it fails

There's a member on here called Baron Youngman in the US who either provides this service or can point you in the right direction, see post below, his details are on there

https://www.sl113.org/forums/index.php?topic=30878.msg225565

Title: Re: Fuel pump motor
Post by: merrill on January 17, 2023, 13:36:56

hi
there are several rebuild videos that are helpful,  authentic classics has one on you tube

these videos and the one above are helpful
How to rebuild a Bosch Short Fuel Pump MERCEDES W108 W111 W113 0442201002 A 0010915201
https://m.youtube.com/watch?v=PkC8WQd3_H4&feature=youtu.be
Rebuilding An Old Mercedes “Short” Fuel Pump
https://m.youtube.com/watch?v=TFcO3I3GQBg
1963 to 1972 Mercedes FID Short Electric Fuel Pump Repair Options
https://m.youtube.com/watch?v=yI7T3WVpfk8&feature=youtu.be

Title: Re: Fuel pump motor
Post by: Lew on January 17, 2023, 16:51:14

Thank you all!!  I so appreciate your comments and suggestions.  Lew

Title: Re: Fuel pump motor
Post by: boterinse9 on January 17, 2023, 21:31:03

Baron Youngman is your go to guy end of story ...

Title: Re: Fuel pump motor
Post by: Kevkeller on January 21, 2023, 15:57:32

That commutator can be cleaned up I think. I turned mine down on a lathe and posted about rebuilding my pumps on this forum if you’re interested.

You can buy a new one if needed though.