Marvin replacement crank handles

Quick Learner from Lake Bluff, IL

Jul 31, 2021 6:31 pm

I've had a few of these fail. The pin on the crank comes loose and the blue steel spring drops out. No part number stamped on these.

2 user uploaded images

4 Replies

Tom from SWISCO

Aug 5, 2021 10:27 am

It sounds like the gears on your operator have stripped out. You will need an all new operator assembly.

We can help, but in order to make a recommendation I will need you to remove the operator in question from the window in its entirety and show me a photo of it. Please make sure that I can see the whole thing in one shot; if any details are missing or obstructed, we may not be able to help.

Quick Learner from Lake Bluff, IL

Aug 5, 2021 12:05 pm

No, there is a pin that connects the swing out handle to the base of the handle. The pin works loose and the handle comes apart. I reassemble the handle and put the pin back in, but it starts, it will happen again. There is a blue steal tensioning spring which eventually gets lost. Once this is lost, there is no keeping the pin in.

What I'm looking for is a replacement crank handle.

1 user uploaded image

Tom from SWISCO

Aug 5, 2021 1:03 pm

Gotcha, I understand now. Thank you for clarifying.

In that case my recommendation would be the 39-107FK. This appears to match your old cover and handle assembly pretty closely. Check it out and see if you agree.