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Author Topic: Project "walrus" Yam XS 750  (Read 33637 times)

Offline Mi3ninos

  • Posts: 4
Re: Project "walrus" Yam XS 750
« Reply #60 on: Aug 12, 2016, 14:12:28 »
Those are the boots I have on the 79 w Mik II bs34 carbs.  Looks like you are going with the Mik II BS34 carb per the tuning file xs750au sent you, although the principle is likely the same if you went with Mik 1.

xs750AU is giving you excellent info.

Offline XS750AU

  • Posts: 309
Re: Project "walrus" Yam XS 750
« Reply #61 on: Aug 12, 2016, 19:30:16 »
Ryan
They look very similar to the ones I am using. Should be fine as long as they seal. The little extra length will not matter if you are using pod filters.
“Engineering is the art of being approximately right rather than exactly wrong.”

Yamaha XS750-2D
Yamaha XS896
Husaberg FE550
Yamaha TT250
Yamaha IT200N

Offline Ryan Stecken

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Re: Project "walrus" Yam XS 750
« Reply #62 on: Aug 13, 2016, 08:30:41 »
Thanks tim!

Did you guys rebuild youre brakes...how the hell did you get that d**** clip on the rubber dust cap...there just a tiny ridge for it...is there a trick to it?

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Offline XS750AU

  • Posts: 309
Re: Project "walrus" Yam XS 750
« Reply #63 on: Aug 13, 2016, 22:35:46 »
Ryan
Confession time. I had never serviced the front calipers as they were working fine. I did put on braided hoses, but all I did was bleed the caliper. I had some kits, so with your question I thought it was time!!!!!
Pulled the caliper off and there was no dust cover or seals - bugger!!
So the photos below are the fitting of the rubber seal and dust boots. Note one kit had a rubber washer and one kit did not- no idea why? The schematic in the repair manual does show the washer, but it was oversize compared to the piston and appears to just sit on top of the caliper boss. So one side has the washer and one side does not.
The photos are the sequence of assembly - the wire clip goes on the outside of the boot to clamp the boot to the caliper boss.
Cheers
Tim
“Engineering is the art of being approximately right rather than exactly wrong.”

Yamaha XS750-2D
Yamaha XS896
Husaberg FE550
Yamaha TT250
Yamaha IT200N

Offline XS750AU

  • Posts: 309
Re: Project "walrus" Yam XS 750
« Reply #64 on: Aug 14, 2016, 00:12:49 »
Found the second rubber washer, so now they both have them fitted.
To get the metal clip on.
Have the boot fully seated down on the caliper boss.
With the clip on the boot, push one free end of the clip down into position and then work you way around to the other end. I used a blade screw driver to push it down.
Cheers
Tim
“Engineering is the art of being approximately right rather than exactly wrong.”

Yamaha XS750-2D
Yamaha XS896
Husaberg FE550
Yamaha TT250
Yamaha IT200N

Offline Ryan Stecken

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Re: Project "walrus" Yam XS 750
« Reply #65 on: Aug 14, 2016, 14:06:09 »
Thanks tim!

Interesting there are just 4 parts on my brakes:

1.)the brake piston (chromed)
2.)the rubber boot
3.)a circlip the pin the boot dowm
4.)the seal that sits in the notch where the piston slides up and down.

The rubber seal (4.) that you show in your first pic above belongs into the notch IN the brake assembly...or am I missing something :-)?

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Offline XS750AU

  • Posts: 309
Re: Project "walrus" Yam XS 750
« Reply #66 on: Aug 14, 2016, 19:16:15 »
Hi Ryan
Yes that makes sense. The trouble with the kits I had was that the rubber washer/seal was oversize. As you coul see in the photo it was the same OD as caliper boss. Do you you have a photo? Does it go on the piston? Or does it fit into the caliper  body?
Thanks
Tim

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“Engineering is the art of being approximately right rather than exactly wrong.”

Yamaha XS750-2D
Yamaha XS896
Husaberg FE550
Yamaha TT250
Yamaha IT200N

Offline Ryan Stecken

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Re: Project "walrus" Yam XS 750
« Reply #67 on: Aug 14, 2016, 19:17:28 »
I will send you a pic tomorrow my friend!
Cheers

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Offline datadavid

  • Posts: 1120
Re: Project "walrus" Yam XS 750
« Reply #68 on: Aug 15, 2016, 01:50:05 »
I did not get these rubber washers in my kit? Running without them and all is well so far.

Offline datadavid

  • Posts: 1120
Re: Project "walrus" Yam XS 750
« Reply #69 on: Aug 15, 2016, 01:52:21 »
The square rubbers you put outside of the piston, are they not simply the piston seals? Which are supposed to fit in a groove inside the caliper?
The notch on the piston is just for holding the rubber cover in place!