Hello,
Last week I got my first regulator set (1st stage Scubapro Mk11 and second stages R395-R295). I bought the set from an e-bay store. All the seller knew about it was that it was hardly used. No info about no of dives, date of purchase or anything else.
From outside it looks sparkling and clean like brand new but I knew I have to service it anyway because nobody knew for how long it has been sitting like this.
After a lot of consideration and thanks to plenty of support from @couv I decided to service it myself. Following @couv 's advice, apart from the usual service kits, I have ordered a set of o-rings to replace even the ones that are not supposed to be changed annually, just in case.
While I am waiting for the service kits, extra o-rings etc to be delivered I decided to disassemble the unit to have a look at it, get the parts cleaned etc.
Well to begin with the DIN knob retainer was stuck - BIG time. I tried dipping it in fresh water overnight to soften any salt residue, heating the body while keeping the DIN inlet cold with ice and leaving it in water, all these repeated several times until the alen hole was destroyed by the force I used. Once the alen hole was destroyed I used a set of plumber's pliers to unscrew the thing (destroying it even more). Still it needed A LOT of force to come loose. It is not a huge deal because anyway I wanted to convert it eventually to 300 bars (the original one had 200bars DIN) but it added another 50 euros to the total cost plus another 10 days or so to waiting time to get the new parts.
After this I finished disassembling the rest of the unit without further issues. I fount the diaphragm spring covered by a white dry residue (salt?) - but nothing else had such residue. The spring is quite sticky though so it might be that this white residue might be something other than salt (dried lubricant?). Whatever it is it goes off easily so the spring will be cleaned. Anyway overall the unit is not in bad condition and everything after the diaphragm is totally clean.
I have though 2 questions concerning parts that I didn't find in my unit:
1) In the text of the service manual in disassembling step 6 it is mentioned "...remove the diaphragm disk and the 2 washers...". I am pretty sure I only fount 1 washer inside my unit. Also in the schematic only one washer is shown (Part #21 called "Diaphragm Ring"). Similarly in the assembling section (step 11) "2 diaphragm washers" are mentioned again. Where on earth is the second washer?
2) Similarly I didn't find in my unit Part #39 (called "Sleeve") in the HP valve assembly. My assembly had only the HP Valve (Part #28) and the strange looking conical Sleeve (Part #29) where the spring sits. The "missing" part is supposed to be part of the service kit - so it is not big deal even if I lost it although I am again pretty sure there was no such thing in my unit.
Are these parts really necessary? Maybe my unit is slightly different version than the one the service manual refers to?
I will keep posting my progress and any further questions that I might get.
Any help welcome.
Thanks a lot in advance.
Special thanks once more to @couv for all the info, support and encouragement he offered me so far.
Last week I got my first regulator set (1st stage Scubapro Mk11 and second stages R395-R295). I bought the set from an e-bay store. All the seller knew about it was that it was hardly used. No info about no of dives, date of purchase or anything else.
From outside it looks sparkling and clean like brand new but I knew I have to service it anyway because nobody knew for how long it has been sitting like this.
After a lot of consideration and thanks to plenty of support from @couv I decided to service it myself. Following @couv 's advice, apart from the usual service kits, I have ordered a set of o-rings to replace even the ones that are not supposed to be changed annually, just in case.
While I am waiting for the service kits, extra o-rings etc to be delivered I decided to disassemble the unit to have a look at it, get the parts cleaned etc.
Well to begin with the DIN knob retainer was stuck - BIG time. I tried dipping it in fresh water overnight to soften any salt residue, heating the body while keeping the DIN inlet cold with ice and leaving it in water, all these repeated several times until the alen hole was destroyed by the force I used. Once the alen hole was destroyed I used a set of plumber's pliers to unscrew the thing (destroying it even more). Still it needed A LOT of force to come loose. It is not a huge deal because anyway I wanted to convert it eventually to 300 bars (the original one had 200bars DIN) but it added another 50 euros to the total cost plus another 10 days or so to waiting time to get the new parts.
After this I finished disassembling the rest of the unit without further issues. I fount the diaphragm spring covered by a white dry residue (salt?) - but nothing else had such residue. The spring is quite sticky though so it might be that this white residue might be something other than salt (dried lubricant?). Whatever it is it goes off easily so the spring will be cleaned. Anyway overall the unit is not in bad condition and everything after the diaphragm is totally clean.
I have though 2 questions concerning parts that I didn't find in my unit:
1) In the text of the service manual in disassembling step 6 it is mentioned "...remove the diaphragm disk and the 2 washers...". I am pretty sure I only fount 1 washer inside my unit. Also in the schematic only one washer is shown (Part #21 called "Diaphragm Ring"). Similarly in the assembling section (step 11) "2 diaphragm washers" are mentioned again. Where on earth is the second washer?
2) Similarly I didn't find in my unit Part #39 (called "Sleeve") in the HP valve assembly. My assembly had only the HP Valve (Part #28) and the strange looking conical Sleeve (Part #29) where the spring sits. The "missing" part is supposed to be part of the service kit - so it is not big deal even if I lost it although I am again pretty sure there was no such thing in my unit.
Are these parts really necessary? Maybe my unit is slightly different version than the one the service manual refers to?
I will keep posting my progress and any further questions that I might get.
Any help welcome.
Thanks a lot in advance.
Special thanks once more to @couv for all the info, support and encouragement he offered me so far.
