Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help




Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Diesel Discussion

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 02-03-2018, 08:18 PM
E300d 1995
 
Join Date: Jun 2017
Location: Near Lake Texoma
Posts: 194
95 E300D W124 om606 injection pump overflow bolt for banjo fitting

I spent a few hours looking for a 3/8 check valve I could put inline between lift pump and filter. Most were aluminum which can corrode. Others were bulky.

One link mentioned that the overflow bolt on the Mercedes diesel was actually a check valve that was intended to help prevent long cranks by preventing fuel to return to tank.

If so, maybe I just need a new overflow bolt. Some threads say some bolts are rebuildable but spring can't be ordered just stretched.

Is this pretty much the way it is?
Reply With Quote
  #2  
Old 02-03-2018, 08:35 PM
sixto's Avatar
smoke gets in your eyes
 
Join Date: Jun 2000
Location: SF Bay Area
Posts: 20,706
I think for ‘95 the bolt is sealed so you can stretch or replace the spring. You should be able to retrofit an older (616/7) bolt which IIRC is no longer available new. Someone on the forum made a custom bolt with adjustable pressure.

Sixto
98 E320s sedan and wagon
Reply With Quote
  #3  
Old 02-03-2018, 10:08 PM
Diseasel300's Avatar
Registered User
 
Join Date: May 2016
Location: Texas Hill Country
Posts: 4,323
Having used the 617 bolt on a 603, I wouldn't suggest that route. The 60x injection pumps use a self-bleeding fuel system with a different type of banjo bolt. The "check valve" in them is a very basic disc style valve with a very weak spring on it. The pressure restriction is due to a drilled orifice rather than spring tension. The 61x style bolt is a traditional check valve where pressure is regulated by spring tension. Since there is no primer handle on the 60x engines, any air that gets caught in the IP will not be bled out and can cause long cranks or rough starts. If you suspect the valve in your banjo bolt has failed (and they do fail), buy a new one, they aren't that expensive.
__________________
'11 Honda Accord EX - "The Daily" 64K
'83 500SL Euro - "The Money Pit" 116K
'91 350SD - "The Diseasel Jr." 168K
'86 300SDL - "The Diseasel" 189K (Totaled 1/31/19)
The Diseasel Thread - Everything You Didn't Know You Wanted To Know
Reply With Quote
Reply

Bookmarks

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 On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 07:41 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page