What now?

[captain]

I don't know about later Scuba Pro regs but I have a MK V/R109 and made every tool ( 4 total) I need to service it. Looking at the Scuba Tools site the only Scuba Pro tool I see that could not be easily made is the balance chamber tool which is more than likely not absolutely needed. The rest could be made or bought. www.mcmaster carr.com is a good source for tools not usually found in the local hardware store such as spanners. I wouldn't even bother with a torque wrench. I think it is only used on the turret retaining nut to prevent over tighting and stressing the nut to failure. The inch pound range torque wrenchs in the low ranges are ungodly expensive. Just learn to not use the force of an 800 pound gorilla when tighting things.

 

[Couv]

These guys have a few tools if you do not want to make your own.

Northeast Scuba Supply - Online Catalog - Tools

 

[halocline]

I I wouldn't even bother with a torque wrench. I think it is only used on the turret retaining nut to prevent over tighting and stressing the nut to failure. The inch pound range torque wrenchs in the low ranges are ungodly expensive. Just learn to not use the force of an 800 pound gorilla when tighting things.

If your MK5 has the brass turret bolt, I'd want the torque wrench. I bought mine (1/4" drive, in/lbs) for about $25 at a local tool outlet store. The spec is 35-45 in/lbs, which as you know is less than 3-4 ft/lbs. I can't imagine not overtorqueing if I tried to do that by hand. If you have the SS turret bolt, I bet it can handle higher torque, even though there's no higher torque value on the parts diagram I have. For the MK10 diagram, it says 35in/lbs if the bolt is brass, 70 if SS.

Since my torque wrench only goes to 200 in/lbs, I do fudge it for the yoke nut, as a result of being too cheap to buy 2 torque wrenches. I torque it to 200 in/lbs, then give it an extra nudge which hopefully brings it to around 275.

But, you've been doing this for a long time, so it's not exactly my place to tell you what to do!

 

[captain]

If your MK5 has the brass turret bolt, I'd want the torque wrench. I bought mine (1/4" drive, in/lbs) for about $25 at a local tool outlet store. The spec is 35-45 in/lbs, which as you know is less than 3-4 ft/lbs. I can't imagine not overtorqueing if I tried to do that by hand. If you have the SS turret bolt, I bet it can handle higher torque, even though there's no higher torque value on the parts diagram I have. For the MK10 diagram, it says 35in/lbs if the bolt is brass, 70 if SS.

Since my torque wrench only goes to 200 in/lbs, I do fudge it for the yoke nut, as a result of being too cheap to buy 2 torque wrenches. I torque it to 200 in/lbs, then give it an extra nudge which hopefully brings it to around 275.

But, you've been doing this for a long time, so it's not exactly my place to tell you what to do!

I've been twisting wrenches on engines, of all types and sizes, scuba gear and just about anything else mechanical all my life. I have three torque wrenches from a few inch pounds to 600 foot pounds but after years you get a sence of how tight something is by the length of the wrench you use and how much force you put on it depending on what the type of material the fastner is made of.

That brass turret bolt is not something you want to stress with too much torque. If it shears underwater there goes your 2nd stage, octo and BC inflator all at once. I don't see the need to tighten the SS nut any tighter then the brass nut. If 35 in/lb's is enough to hold the brass nut in place it is enough to hold the SS nut. By using the higher torque you are stressing the brass female threads in the body and the SS nut more than you need to. I would much rather put a drop of blue loctite on it and just snug it up with a short wrench.

I'm not saying torque wrenches are never needed just not in every situation.
What is the range, type and brand of your torque wrench. $25 is an really low price.