font caliper rebuild kit

[whiterabbitt]

so I couldnt find a kit a couple of months ago when I did the brake pads, now the front caliper is leaking, after looking at a couple of sites I still cant find a kit so I was wondering where do I get the orings and other rubber bits I need?

77 750B stock front caliper

thanks in advance

[Adler]

so I couldnt find a kit a couple of months ago when I did the brake pads, now the front caliper is leaking, after looking at a couple of sites I still cant find a kit so I was wondering where do I get the orings and other rubber bits I need?

77 750B stock front caliper

thanks in advance

I had a similar problem with a '79 550 caliper. My solution was to find a later model caliper and use that instead. I haven't received it yet, but I hear they bolt up fine and improve braking.

[Johno]

Replace the seals

If the pistons are not pitted just replace the seals with OEM parts from Suzuki.

[hampshirehog]

If the pistons are pitted replace them with stainless steel ones. OEM rubber parts only though.

[Johno]

If the pistons are pitted replace them with stainless steel ones. OEM rubber parts only though.

Agree 100%. Don't take short cuts with brakes and tyres. The consequences are not worth contemplating. The manufacturers parts were designed for the bike and will always fit properly and do the job. Other after market parts such as indicators etc are not as critical.

[hikermikem]

I believe you want a piston cup set, which I think is this p/n for your B model 750:

59100-45813

Check it here at PartShark:

http://www.partshark.com/fiche_section_detail.asp?section=94692&category=Motorcycles&make=SUZUKI&year=1977&fveh=2133

Best to call them & verify the part - my experience is they can see more parts on their look-up fische than we can see at their site.

I've bought several OEM piston cup sets (new pistons, seals, dust boot & bleeder cap) from them & often they are not listed on-line but are available when you call...

good luck,

mike

[cowboyup3371]

Agreed. Get the piston set you see on the fiche. That includes what you need and depending on the bike will have a new piston in it.

[whiterabbitt]

does the piston cup set come with the o rings and dust boots for the caliper holder?

as far as I can tell I just need the rubber parts #'s 3,4,5,6 on the fiche. The dust covers (#4) are really gummy if not totally deteriorated and the orings (#3) are totally worn, misshapen, or just missing. I havnt popped out the piston yet so it remains to be seen if that needs to be replaced too but its not all rusted so I have hope there, and it only just started leaking so its not like it was full of moisture.

what is with the 3-5 dollar each orings? are they made with gold or something?

[hampshirehog]

Buy stainless pistons and lob the old things plus the dust covers in to the bushes. Then you just need to buy the OEM seals. You're right - they do seem expensive (but the cheap ones will end up more expensive in other ways).

[whiterabbitt]

ok so my piston has 2 small pits right below where it would rest on the seal, an experienced friend seems to think I should try it anyway, and the caliper holder ( the part that bolts to the forks) has marks/gouges where it has come in contact with the caliper body where the dust covers go.

@ hampshirehog; do you mean just not use the dust covers? at $9.97 list price ea. I would like to forget them.

I am continually amazed by my gs, its ability to never give up, no matter what, is impressive. It seems like every time I go to fix something minor I discover something fairly major, after taking it apart I wouldnt have thought that brake would even work had I not been riding it for more than a year, and with a warped rotor too until I got replacements from chuck hahn a couple months ago.

based on this experience I am loath to look into other options but this brake deal is getting real expensive real fast, and the availability of parts kinda sucks. tell me, is it worth it to proceed or would I be money ahead if I did a caliper swap? to say a 1000 unit that has readily available parts, or something.

[Nessism]

ok so my piston has 2 small pits right below where it would rest on the seal, an experienced friend seems to think I should try it anyway,

Why would an "experienced friend" suggest such a thing? As soon as the pads wear a little those pits will be right under the seal causing a leak.

[hampshirehog]

As Ed says, if you've got pits in those pistons, chuck 'em in the bushes. When they leak they don't just dribble out fluid - it squirts out (and usually when you're trying to slow down for a tight right-hander). DON'T TAKE THE RISK.

Don't bother with the dust seals if you're fitting stainless pistons. Some folk also suggest that fitting those boots causes the standard pistons to rust quicker - water gets in and can't get out scenario.

The only problem you have if you don't fit the dust seals is when you fit new pads - you have to remove the pistons to clean the (now hardened) brake dust from the outside.

[Nessism]

Stainless pistons may be commonly available in the UK, but not in the US (at least, I've never found a source). At any rate, a new piston is definitely needed. Just for giggles, how about measuring the piston with some calipers, both diameter and height, and post it here. I have a couple of spare pistons but can't remember where they came from.

[whiterabbitt]

the dust covers(#4 I need 4) I refer to are on the caliper holder(#7) not the piston(#1). and the expensive orings are #3 I need 4 of those too. http://images.powersportsnetwork.com...es/2133_64.gif


the experienced friend is a harley guy and he just said to try it before spending the money, since it didnt leak before the new pads were installed, if it leaks I still have to replace it and if it dont im not out $50.

I see what you guys are saying though, fixing the whole bike and/or myself would cost a lot more.

[Nessism]

Extremely dumb idea to run the bike with that pitted piston. I'm not surprised that guy rides a Harley.

When, not if, it starts to leak, the brake pads will get soaked in fluid thus damaging them...and then your body may get damaged as well.