CFR MPS rebuild, Copy of instructions Options

[Ron914]

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?

[rjames]

The hex tool is used in conjunction with the screwdriver.
I recommend you go to Anders web site to learn how the MPS works.
MPS Info

In brief, there are 3 main adjustment mechanisms: the inner screw (adjust with screw driver), the outer screw (adjust with hex tool) and full load stop screw (adjust with Allen wrench if using the new one that came with the kit, or screw driver if using the original).

The inner screw will also turn the outer screw unless you keep the outer screw from turning by using the hex tool while adjusting the inner screw (the screw driver fits inside the hex tool).

Either tap size will work. Just depends on how bad your threads are after removing the original full load drop screw. Go slow when trying to remove the screw. Trying to force it to turn before moving all the resin/glue will result in having to drill it out.

The other tool you’ll likely need is a wide band O2 sensor to tune the MPS after you rebuild it.

Good luck!

[Ron914]

The hex tool is used in conjunction with the screwdriver.
I recommend you go to Anders web site to learn how the MPS works.
MPS Info

In brief, there are 3 main adjustment mechanisms: the inner screw (adjust with screw driver), the outer screw (adjust with hex tool) and full load stop screw (adjust with Allen wrench if using the new one that came with the kit, or screw driver if using the original).

The inner screw will also turn the outer screw unless you keep the outer screw from turning by using the hex tool while adjusting the inner screw (the screw driver fits inside the hex tool).

Either tap size will work. Just depends on how bad your threads are after removing the original full load drop screw. Go slow when trying to remove the screw. Trying to force it to turn before moving all the resin/glue will result in having to drill it out.

The other tool you’ll likely need is a wide band O2 sensor to tune the MPS after you rebuild it.



Good luck!

@rjames
Thanks for the information.I am a newbie when it comes to learning the workings of my 914 ,it has been quite a learning experience for me and a lot of fun .After 3+ years now I am almost there.I did purchase a AEM gauge pictured below for tuning my MPS for a 2056 motor . So it sounds like I don't need to order 2 taps , I think I will just order the M12X1.0 . How about the replacement screws for the drilled out rivets ?What size would be best 6/32 or 8/32 ?