 CFR MPS rebuild, Copy of instructions |
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| Ron914 |
 Apr 28 2025, 10:52 PM
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#1
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Member  Group: Members Posts: 468 Joined: 19-April 22 From: Huntington Beach,Ca Member No.: 26,487 Region Association: Southern California 
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I needed to rebuild my MPS but Chris Foley is out of the kits due to no longer having a supplier of the BE-CU diaphragms . I was lucky enough to have a member here offer to sell me his spare parts kit from Chris (Thanks Tom). His kit did not have the instructions with it so I am wondering if anyone has a copy of those instructions?
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| emerygt350 |
Apr 30 2025, 06:49 PM
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#2
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Advanced Member Group: Members Posts: 3,423 Joined: 20-July 21 From: Upstate, NY Member No.: 25,740 Region Association: North East States |
Don't worry, the mps is all self contained. The delicate stuff is all hidden away and you don't go near it. The diaphragm comes right out and you just replaced it following Chris's instructions. Pbanders describe which pins you use for measuring the inductance. When it comes time I can help with that. My epoxy was wimpy and I just used a big honking flat head that fit the stop screw perfectly. Some gentle twisting and it came right out.
Drilling out the screws and popping it open is nothing. Mine had spider eggs in it. That's about it. Make good measurements on the position of the inner, outer, and stop screws and you will be fine. |
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| Ron914 |
Apr 30 2025, 07:20 PM
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#3
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Member Group: Members Posts: 468 Joined: 19-April 22 From: Huntington Beach,Ca Member No.: 26,487 Region Association: Southern California
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QUOTE(emerygt350 @ Apr 30 2025, 07:49 PM)  Don't worry, the mps is all self contained. The delicate stuff is all hidden away and you don't go near it. The diaphragm comes right out and you just replaced it following Chris's instructions. Pbanders describe which pins you use for measuring the inductance. When it comes time I can help with that. My epoxy was wimpy and I just used a big honking flat head that fit the stop screw perfectly. Some gentle twisting and it came right out. Drilling out the screws and popping it open is nothing. Mine had spider eggs in it. That's about it. Make good measurements on the position of the inner, outer, and stop screws and you will be fine. Yes I will make good precise measurements ,I firgured my old analog caliber was not going to cut it for precise measurements so I also ordered a new digital caliper so I can measure to the hundreds . Your words are encouraging so after I test drive with the new TB I will remove my MPS and start rebuilding , I did decide it needed a little TLC so I broke out the Mothers aluminum polish and I will soon have it shiny as a piece of chrome. |
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Posts in this topic
Ron914 CFR MPS rebuild Apr 28 2025, 10:52 PM
MDTerp RE: CFR MPS rebuild Apr 29 2025, 04:26 AM
Ron914
Thank you Michael. @[url=http://www.914world.c... Apr 29 2025, 08:27 AM rjames The hex tool is used in conjunction with the screw... Apr 29 2025, 08:50 AM Ron914
The hex tool is used in conjunction with the scre... Apr 29 2025, 09:31 AM ChrisFoley The reason I recommend using those smaller taps as... Apr 29 2025, 08:54 AM ChrisFoley That's an old tool set pictured. Currently, I ... Apr 29 2025, 08:57 AM ChrisFoley Hi Ron,
I was just on the phone with Tom yesterday... Apr 29 2025, 09:05 AM Ron914
Hi Ron,
I was just on the phone with Tom yesterda... Apr 29 2025, 09:34 AM emerygt350 Those look like good improvements on an already gr... Apr 29 2025, 09:49 AM rjames
Don't overthink it. If both sizes are in the... Apr 29 2025, 10:10 AM ChrisFoley I've been including M4 screws & nuts for a... Apr 29 2025, 10:37 AM MDTerp For me it was also very helpful to install a vacuu... Apr 29 2025, 01:05 PM emerygt350
For me it was also very helpful to install a vacu... Apr 29 2025, 03:20 PM Ron914
For me it was also very helpful to install a vac... May 1 2025, 07:35 AM emerygt350
[quote name='emerygt350' post='3203360' date='Apr... May 1 2025, 09:34 AM Ron914
[quote name='emerygt350' post='3203360' date='Ap... May 1 2025, 11:37 AM TargaToy Well crap. I didn’t realize there was no longer... Apr 29 2025, 07:09 PM Ron914
Well crap. I didn’t realize there was no longe... Apr 29 2025, 07:47 PM emerygt350 I believe Chris is looking for a replacement. Apr 29 2025, 07:29 PM Ron914 After reading a bit of Paul Anders MPS Diagnosis I... Apr 29 2025, 08:48 PM JeffBowlsby
After reading a bit of Paul Anders MPS Diagnosis ... Apr 29 2025, 10:08 PM emerygt350 I agree. I think anders is really doing the deep... Apr 30 2025, 04:33 AM Ron914
I agree. I think anders is really doing the dee... Apr 30 2025, 06:18 PM worn
I needed to rebuild my MPS but Chris Foley is out... Apr 30 2025, 05:30 PM Ron914
I needed to rebuild my MPS but Chris Foley is ou... Apr 30 2025, 05:41 PM emerygt350 Your favorite FLAPS. Cheap plastic t works fine. ... May 1 2025, 01:46 PM MDTerp Agree, I use a cheap plastic T connection. Here... May 1 2025, 07:47 PM ChrisFoley Its a good idea to test the mityvac on a dead ende... May 2 2025, 05:57 AM Ron914
Its a good idea to test the mityvac on a dead end... May 2 2025, 07:46 AM |
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