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Nissan diesel engines, and the people who love them
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Post Number:#1  PostPosted: Thu Dec 01, 2016 1:20 pm 
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Joined: Sat Dec 02, 2006 7:10 pm
Posts: 116
Location: Houston TX
I've got the back off my pump (in the truck) and I can't tell what's holding the diaphragm in. I don't have a spare so I want to be super careful getting this one out for cleaning. Is there a circlip or something that needs to come out? Also, has anybody got a source for these yet? I read the many threads and followed links but didn't see one. Thanks

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Christian
1981 720 SD22


Last edited by cseger1 on Mon Dec 12, 2016 1:48 pm, edited 1 time in total.

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 Post subject: Re: IP diaphragm removal
Post Number:#2  PostPosted: Thu Dec 01, 2016 11:27 pm 
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Joined: Thu Feb 28, 2013 8:41 pm
Posts: 405
Location: Vancouver Washington USA
cseger1 wrote:
I've got the back off my pump (in the truck) and I can't tell what's holding the diaphragm in. I don't have a spare so I want to be super careful getting this one out for cleaning. Is there a circlip or something that needs to come out? Also, has anybody got a source for these yet? I read the many threads and followed links but didn't see one. Thanks


Do you see where the clip would be in the attached photo.


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 Post subject: Re: IP diaphragm removal
Post Number:#3  PostPosted: Fri Dec 02, 2016 10:09 am 
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Joined: Sat Dec 02, 2006 7:10 pm
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Location: Houston TX
Aha, so I have to get behind it for removal. Can it be pushed open with the fuel lever or do you pry it with off a tool?

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Christian
1981 720 SD22


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 Post subject: Re: IP diaphragm removal
Post Number:#4  PostPosted: Fri Dec 02, 2016 10:51 am 
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Joined: Sat Dec 02, 2006 7:10 pm
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Location: Houston TX
Also, my pump had no gasket whatsoever on the diaphragm cover. I'm guessing there is supposed to be one because vacuum right?

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1981 720 SD22


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 Post subject: Re: IP diaphragm removal
Post Number:#5  PostPosted: Sun Dec 04, 2016 12:30 pm 
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Joined: Tue Jan 26, 2016 11:52 pm
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cseger1 wrote:
Also, has anybody got a source for these yet? I read the many threads and followed links but didn't see one. Thanks


Over a year ago I picked up a complete motor with transmission, radiator, air filter, etc. However, it did not come with the electrics needed to operate the mechanical injection pump controls (can't remember the name, but Toyota has a very similar system and calls it an EDIC).I have since then had it running briefly while setting on my shop floor and hooked up to my motor hoist for stability.

With this added confidence, I started looking here for a place to get a replacement diaphragm. Everything I found here was old, so I turned to IP rebuilders, and here is what I found. Oregon Fuel Injection out of Eugene, Oregon was able to find a diaphragm for me. I haven't taken my old diaphragm out for comparison, but from the pictures I found on this forum it appears to be correct.

Here's complete contact information:
Oregon Fuel Injection, Inc.
4036 W. 1st Ave.
Eugene, OR 97402
1-800-452-5055 or 541-485-1434
The guy in the parts department I talked to was Paul. He was kind enough to e-mail me a complete exploded parts diagram of the governor found on these inline injection pumps.

They apparently did not have it in stock, but knew where to get one from the East Coast as I was charged incoming freight as well as UPS to me. The part number is: 155020-7920 (Zexel number), and cost was $36.10, with all shipping added on for a total of $55.06.

Don


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