Triumphrat

Klicker · 04-20-2004

I am trying to rebuild a 1976 750 Bonnie that someone started. There is a leak in the front forks . My question is can the Damper tube be removed using a socket if so what size. Rod

04-20-2004

Do you mean remove from the fork leg or the stanchion?

Klicker · 04-20-2004

I wanted to know if the damper valve could be removed with out taking it off the bike. I took out the spring and could see a nut in the bottom and wanded to know if it is possible to fit a socket down and re move it or do you need the tool the book says. Rod

04-20-2004

I assume you are referring to tool 61-6113. This is just a long screwdriver and engages in a slot in the top of the damper valve tube. It's purpose is to stop the damper valve assy turning when you unscrew the capscrew at the base of the fork leg. You can sometimes unscrew the capscrew without the tool. After removing the capscrew you can remove the fork leg by sliding it down off the stanchion, leaving the damper valve assy attached to the stanchion.

If you haven't got the tool you can easily make one from a piece of 1/2" dia x 2ft long bar. File the end to form a screwdriver 1/8" wide x 1/8" deep.

[ This message was edited by: terry on 2004-04-20 12:31 ]

Klicker · 04-20-2004

Yes that is the tool I was talking about. When I showin a light down the tube I could see a large nut but not a slot for the tool. I will try looking again tonight.The person i bought the bike from said the old ones took a9/16th socket an a Allen screw in the bottom. The bike is at the other persons shop as he has rebuilt a number of bikes but due to poor health he can only help a little. rod

04-20-2004

I think you are referring to the damper valve nut. That nut holds the bleed valve onto the damper tube and you don't need to undo that one. When you remove the fork leg you will see the nut that holds the damper assy to the stanchion.
If you are just replacing the fork seals, and using the existing stanchions, then you do not need to remove the damper valve assy from the stanchion.

Klicker · 04-20-2004

I need to replace the damper valve O ring. Rod

04-21-2004

Ok Rod, I thought you meant the top fork seals. You need to use the tool in the slot and remove the allen capscrew from the bottom of the leg. Pull off the fork leg and then unscrew the damper valve assembly from the bottom of the stanchion. I have made a note in my manual that the nut is 1&1/4" AF.
The 'o' ring part no. is 97-4003

While the fork legs are off you should fit new seals as well. If you can get them, the 'Ariete' seals are better than the standard ones and don't cost much more.

Out of interest, how do you know the 'o' ring needs replacing? Are you not getting enough damping?

Klicker · 04-21-2004

The forkes are leaking on one side.I was told the dowty washer needed to be replaced I have them they are some of the new parts that Robert had bought to rebuild it with that go with the bike. Rod

04-21-2004

To replace the Dowty washer the fork leg has to come off anyway. You should start making that tool then. The tool is useful when guiding the damper valve down onto it's location on top of the Dowty washer.
I always put a bit of silicone under the Allen capscrew when I fit it just to make sure.