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  #1  
Old 06-24-2007, 09:56 PM
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Has Anyone Rebuilt an IP themselves-Can it be done?

Just wondering if the Injection Pump can be rebuilt at home? Not that I have one to do. I had one go bad a few years ago and really wondered if it were possible.

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Tom's Imports of Columbia Missouri Ruined the IP in changing leaky delivery valve O-Rings - Refused to stand behind his work. Mid-MO MB drivers-AVOID Tom's!
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  #2  
Old 06-24-2007, 10:09 PM
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Boneheaddoctor claimed he did it.
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  #3  
Old 06-24-2007, 10:16 PM
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When you see the bench Gus Pfister of Pacific FI has to tune IPs you get the sense it's not something you do at home. His bench simultaneously measures the flow through each injector line throughout the rpm range. Also has a mode to set the ALDA.

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93 300SD 3.0 - comatose
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  #4  
Old 06-24-2007, 10:57 PM
ForcedInduction
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No, it's not something that can be done at home. It requires very clean conditions and a test bench to get the all the settings correct.



That's not exactly something most mechanics have in their garage.
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  #5  
Old 06-24-2007, 11:49 PM
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Ip

The main problem is that the special Bosch tools are needed for safe (non-damaging to internals) disassembly and reassy....I watched the Bosch guy here take one apart and the tools are special items....The pressure and flow bench is another item as pictured above...those things are major bucks...
I think they charge over 100 dollars just to hook up an IP for testing.....
The good news is that most of our Bosch inline pumps are ok even with all the miles on them.....A lot of IP's get rebuilt that don't need rebuilding......
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  #6  
Old 06-24-2007, 11:56 PM
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It just shows that with the right tools any job is possible...
but not necessarily at home.
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  #7  
Old 06-25-2007, 12:16 AM
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Unless you have or plan on going through a ton of these cars its not really worth setting yourself up to do this. Serious IP problems are pretty rare so $100 once in a blue moon to get them tested is fine IMHO.

I have been driving MB diesels for a while now and other then messing with the delivery valve seals once I have never had to touch an IP. Well except for timing of course.
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  #8  
Old 06-25-2007, 12:36 AM
ForcedInduction
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Timing, delivery valves, shutoff diaphragm and rack damper are all I've ever had to mess with.
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  #9  
Old 06-25-2007, 12:37 AM
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Not at home.....

A test/calibration bench is required......there aren't really many "special" Bosch tools required, most of the stuff needed can be had on a Snap-On truck....some special torx bits, and such.....

But, even if you had rebuilt many FIP's over the years.....you still would not want to do it at home.....and you would still need the Test/Calibration bench, I think that a good used one goes for somewhere between $70 and $100 thousand US Dollars.....

SB
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  #10  
Old 06-25-2007, 12:10 PM
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The reason someone doesnt chim in here and explain how he has successfully completed a rebuild on one of these is the experience was so troublesome that he is now wearing a straight jacket in a mental institution.My mechanic has a sign on his office door, $80 an hour , $95 an hr if you watch, $115 if you help .Not being a wise a$$ ,he just sets the record straight.How much is a IP rebuild?
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  #11  
Old 06-25-2007, 01:01 PM
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My SDL IP didn't need a lot of work but one of the attachments between the positioning rack and a delivery valve plunger (or whatever the proper terms are) was loose. No way I could have solved that at home.

Sixto
93 300SD 3.0 - comatose
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  #12  
Old 06-25-2007, 01:05 PM
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Quote:
Originally Posted by chasinthesun View Post
The reason someone doesnt chim in here and explain how he has successfully completed a rebuild on one of these is the experience was so troublesome that he is now wearing a straight jacket in a mental institution.
Bonehead is just not on this forum anymore. He is not in an institution.
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  #13  
Old 06-25-2007, 01:20 PM
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That looks like a modified dairy machine .Man 80 k for that ,no wonder the techs charge so much for an IP rebuild ,their trying to just break even with their investment.
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  #14  
Old 06-25-2007, 02:00 PM
Gene
 
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Location: Buffalo NY
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So where do you go? The local Bosch guys say they dont have all the MBz tools. Dont say FInland, I'm not looking to run 10 sec 1/4 miles here!

Is there a rebuilding service folks here have used in the past?
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  #15  
Old 06-25-2007, 07:10 PM
Craig
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I just bought a rebuilt unit when mine started acting up, probably not the cheapest solution but minimum time and hassle required.

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