MK 5 turret retainer

[HenrikBP]

I'm not going to apply any more force than I already did, I'll try the soaking hot/cold/rinse/repeat and see how it goes.

Bigger hammer ...???

Henrik

 

[halocline]

I started playing with the two MK5's I have, and noticed they have slight differences. Apparently one is an MK5 S.P.E.C. (Based on the pictures at the Reg Museum) Can someone tell me exactly what the SPEC part is and if it affects servicing?

If your MK5 looks like the one in the photo you post on this thread, you don't have the one that awap was referring to, I believe. There's a MK 5 with an extra cap around the ambient chamber for environmental sealing. Yours is just the later MK5; they might have called it a "SPEC" version because the holes in the ambient chamber are smaller to prevent the thick grease from leaking out too much.

There's no difference in terms of service or disassembly. You just need to make sure you have a spanner that grabs the holes well, and do the soaking/heat/cold as awap suggests.

 

[parzdiver]

If your MK5 looks like the one in the photo you post on this thread, you don't have the one that awap was referring to, I believe. There's a MK 5 with an extra cap around the ambient chamber for environmental sealing. Yours is just the later MK5; they might have called it a "SPEC" version because the holes in the ambient chamber are smaller to prevent the thick grease from leaking out too much.

There's no difference in terms of service or disassembly. You just need to make sure you have a spanner that grabs the holes well, and do the soaking/heat/cold as awap suggests.

Thanks again. I was able to get the cap off, it is the yoke retainer than won't budge. The parts of this reg are pretty gunked up. When I pulled the piston out, it doesn't look like the o-ring is up in the shaft, I just see the groove. My other MK5 is in great condition.

 

[Zung]

Let me qualify: "hot" = boiling water; "cold" = freezer. Repeat.

I haven't come across anything that resists this treatment except for one lone port plug where the hex cavity walls broke. I hammered in (with a small hammer) the next size up Allen wrench and it finally gave in.

I replace all the o-rings after the hot treatment just to be on the safe side.

Or maybe you have a leverage problem: have you tried a longer handle? Or clamp the yoke retainer in a vise and turn the body?

 

[Hallmac]

I'm not going to apply any more force than I already did, I'll try the soaking hot/cold/rinse/repeat and see how it goes.

Here is a method that works extremely well and will not harm the finish. read this:

Opening lights with glued threads - HOWTO - without tools - no damage!!!

If you can't read it, drop me a pm and I will send it to you in another format.

 

[halocline]

Thanks again. I was able to get the cap off, it is the yoke retainer than won't budge.

Oh yeah, sorry. For this, if you have a good vise, you can clamp the yoke nut in the vise, slip a length of pipe over the reg body (you'll want to protect it with some thick tape or inner tube or something) and twist the body off the nut. It should give you the leverage you need. Have you tried that yet?

 

[parzdiver]

Oh yeah, sorry. For this, if you have a good vise, you can clamp the yoke nut in the vise, slip a length of pipe over the reg body (you'll want to protect it with some thick tape or inner tube or something) and twist the body off the nut. It should give you the leverage you need. Have you tried that yet?

I haven't tried that yet. I am currently doing the boil and freeze on the reg. I was actually mistaken in a couple earlier posts, the SPEC regulator is the one in great condition, the one that is stuck is an older one with just a few larger holes.

 

[redacted]

I suggest you pull all the port plugs and let the body minus cap, spring, piston, and seat retainer (if that can be removed. and let it soak. The threads on a Mk5 yoke retainer are protected by an o-ring so this problem suggest extreme over torquing or some possibly severe salt water corrosion on the interior of the body.

I just don't like the idea of a bigger hammer when dealing with regulators.

 

[Scubaru_Steve]

So...People still looking to have these made? I found the print for it which doesn't look to entirely complicated to reproduce. I am in school for Manufacturing engineering and am currently learning CNC. Much of which I thinkg will aid in production of these parts.

If anyone is still looking to have these made let me know. I will advise that since I do not have the part for it to fit in the first few will be prototypes that will require you to asses the fit and function of it. Please post in here or PM me with inquires. I will "TRY" to make these if possible.

 

[Six2Life]

This is a good time to remind all those who have not signed up that

there're 3 screws available.

Don't miss out this unique opportunity!!! There'll be no third chance!!! Get in touch with Texfrazer NOW!!!

I did not see any of these 3 screws claimed publicly since the above quoted post.(#209) Are they still available?

If so I might need 1 or 2. Will know for sure tomorrow.