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Re: Nylon Coupler crscks when installing
I'll answer last question first. They might be cracking because they are in a bind and when turned on or inserted on the shaft there is too much pressure. Make sure the shafts are free of any debris from the original coupling, also check the bearings for wear or being so tight that they twist the coupling. Everything should move freely. And second I would recommend calling Dremel direct at 1-800-437-3635 for replacement parts. Hope this helps.
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If the leak is around the threads use a nylon thread tape on the threads on the hose. If it's leaking from the center, then there might be something jammed in there holding the shut off valve slightly open
I had the same problem - couldn't get the part (plastic coupler between the spline drive shafts). I purchased a waterproof **** Splice (GB-AMT-5126 12-10 gauge -- used for electrical wire splicing -- got it at Home Depot). Clipped off about 3/8" on each end with diagonal cutters and attached it to the shafts. The steel ring in the middle of the **** Splice connector provides good structural support to the connection. Works like a charm. Plus with a pack of 4 connectors, I have 3 in reserve.
Make sure you put the black cup back on
the end of the motor shaft and that it is pressed all the way on.
Make sure the RPM sensor is plugged in. If neither of these are the
issue, then you probably did not have the motor shaft pushed all the
way back when you tightened the coupler after replacing the worm
gear. Loosen that coupler up and from the front of the motor
(opposite end in which the coupler is on) push the shaft back as far
as it will go. Hold it there while you tighten the coupler back up
and then try it.
I'm guessing, but I think that the Sears tool uses the same flexible coupling. If you go to www.searspartsdirect.com and put in the model 572610031, you can look at the diagram and decide for yourself. I think the part costs $2.57. If it's the right one, I'd order two or three for the future.
Hope this helps.
I would call Dremel direct at 1-800-437-3635 and order them. They also have a tech line, but I would think that they are in a bind when installing and cracking. Look at the bearings to make sure they are not tight or completely locked up. Let me know if I can help further
I have a Dremel 395 Type 3. Motor works fine, shaft doesn't turn. Took it apart to find that the white plastic or nylon flex coupling on the shaft had crumbled and the spline driver, which fits directly over the motor end of the shaft was somewhat worn. I emailed Dremel and got an overnight reply listing the 2 parts I need and the cost: Coupling is $1.00 and the driver is $1.25. Placed order by phone: 1-800-437-3635. I ordered 2 of each in case future replacement is needed. Total bill came to $7.27 including Florida tax and shipping. Can't beat that. They said it would be in the mail by tonight. (Flex coupling number is 2615294309; spline driver is 2615294308.) Rating Locked! (?) lexrehabtech has rated this solution as Helpful
REFERENCE M/N: 395 - Type 3 - Dremel does not have the parts listing on their site for some reason. I actually have the original I saved from 1988! The part number for the Nylon Coupler is: Illustration Code Number: 5 Description: Flex Coupling Part Number: 529430970
This is all from Drawing (Form) Number:5296074 10-88