Go Back   Sprinter-Forum > T1N Sprinters > T1N Write-Ups

T1N Write-Ups Help other T1N owners by posting your experience working on your Sprinter.

Thread Tools Display Modes
Old 01-27-2020, 01:35 PM   #1
Aqua Puttana
Poly - Thread Finder
Aqua Puttana's Avatar
Join Date: Apr 2008
Location: The Falls of Niagara, USA
Posts: 25,933
Thanks: 13,638
Thanked 14,822 Times in 9,399 Posts
Default Fuel Pump Seal Rebuild

OM612 high Pressure Fuel Pump seal replace install repair

Not a complete Write-up as such, but some good information.

Thanks goes to Toobiloo.

Originally Posted by toobiloo View Post
This is a pretty old thread but was useful so I figured I’d post my experience.
I have a OM 612, it started to leak fuel at low temperatures, so I determined it was the high pressure fuel pump. The leak was pretty constant, so needed to be fixed.
I contacted Dr. A but he no longer rebuilds the pumps, so that left me trying to find a decent price for a rebuilt pump or attempting to replace the seals myself.
I decided to attempt the seal replacement myself.
I bought this seal kit:

The kit includes the big o-ring that fits between the pump body and the crankcase. The seal did not exactly match the seals that came out of the pump, but they seamed to be the same sizes.
I followed procedure outlined by surly old bill to get the pump out, and this Utube vid to replace the seals:

Somewhere I picked up a useful tip, which was after the pump was re- installed, I left the high pressure fuel line off (the steel fuel line) and fit a piece of tubing over the pump side of the connector and turned the motor over to run some fuel through the system to flush out any possible contaminants. After I flushed through a fair amount of fuel, I hooked the high pressure fuel line.
So far the repair is working, but it is still early days.
Feel free to expand upon the information.

DAD NAS (N. Amer. Spec) 2004 140 2500 >330,000+ mi. Arctic Whitewash Brush-tone Grey
2006 Freightliner 140 2500HC >183,000+ mi. Arctic Whitewash (Spotted Snow Leopard accents)
"My opinion and worth everything you'll never pay for it." assumed.
Anyone can hold the helm when the sea is calm. Publilius Syrus
"There are only 10 types of people in the world: Those who understand binary, and those who don't." HaWiiLuVeR
16 ounces of unnecessary prevention can be worth a pound of manure.
Aqua Puttana is offline   Reply With Quote
Old 03-04-2020, 01:14 PM   #2
T1N Collector
Join Date: Feb 2017
Location: Florida between the beach and the mouse
Posts: 41
Thanks: 9
Thanked 11 Times in 8 Posts
Default Re: Fuel Pump Seal Rebuild

I made my own video of rebuilding the HPFP on a 2002 Sprinter. I had not found the video Aqua Puttana shared but I recommend watching them both before you start.
I wish I had seen this post and thought to flush the pump before connecting the hard line.
BGerker is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT. The time now is 01:39 AM.

Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2020, vBulletin Solutions, Inc.