Rear Calipot Overhaul - Tdm850

[wicklamulla]

well i split and overhauled me rear clapper during the week, initially i cleaned up the seal grooves and reused the old seals but on pressing the piston back into one half i tore the poor little endangered species......... this made me paranoid as i was then wondering if i had damaged the udder seal on the udder caliper half ???!!!! anyway i took this as an excuse to order some new ones ! i removed the pistons by using the compressed air can you see below in the pics. basically i popped the pistoons into a zipseal bag and into the freezer overnoight, then popped each half of the caliper into a waterproof zip seal bag and immersed them into a basin of boiling water (note; i left the top of the bag open to allow fer steam dispersal as i didn't want damp caliper bodies) ferra bout 15 mins, then rather swiftly removed the caliper and checked twas bone dry, wrapped it up in a tea towel (to retain the heat) rushed up to the shed, removed and inspected the pistons (from freezer) and gave em a quick squirt of brake cleaner and dried em off, fitted me new seals & coated them and the pistons with fresh brake fluid and as gently and as accurately as possible i pressed "them home". some pics below. i basically was concerned about splitting the caliper but i followed GG's example and though "what the hell". ting is i tried reverse bleeding it last night by trying to inject the brake fluid up thru the bleed nipples.....fecking joke that was ! oil prolly give it anudder go this mornin and failing that take it to a dealer to sort!

This post was last modified: 24-06-2012, 07:52 AM by dapleb.

[TDMTAM]

<!--quoteo(post=39299:date=Sat 5th May 2007, 06:17 AM:name=wicklamulla)-->QUOTE(wicklamulla @ Sat 5th May 2007, 06:17 AM) <{POST_SNAPBACK}><!--quotec-->ting is i tried reverse bleeding it last night by trying to inject the brake fluid up thru the bleed nipples.....fecking joke that was ! oil prolly give it anudder go this mornin and failing that take it to a dealer to sort!<!--QuoteEnd--><!--QuoteEEnd-->
Try sucking it through using the syringe instead.
TAM

[steveglover]

<!--quoteo(post=39309:date=Sat 5th May 2007, 09:07 AM:name=TDMTAM)-->QUOTE(TDMTAM @ Sat 5th May 2007, 09:07 AM) <{POST_SNAPBACK}><!--quotec-->Try sucking it through using the syringe instead.
TAM<!--QuoteEnd--><!--QuoteEEnd-->
Or just suck it through a long pipe attached to the bleed nipple - once you get the fluid flowing you can usually bleed them easy enough.
Good pictures Wicky, looks a good job.

[Guest]

Why you freezing the pistons, and heating the bodies - they are not (or shouldn't be) and interference fit at room temp.

A bit of brake fluid on the seals and on the leading edge of the piston and it should slide in nicely

don't use anything other than fresh brake fluid to clean the seals and dust seals - anything else can make them swell and expand causing issue with re-assemble / getting them back into the grooves etc

have you dis-assmbled the master cylinder?
you've probably got something crap in their stopping it from bleeding correctly - take out the plastic elbow, where the pipe from the reservior attaches to and make sure there is no crap in there

[wicklamulla]

will do, cheers GG.

[Guest]

<!--quoteo(post=40379:date=Sat 12th May 2007, 05:17 AM:name=wicklamulla)-->QUOTE(wicklamulla @ Sat 12th May 2007, 05:17 AM) <{POST_SNAPBACK}><!--quotec-->will do, cheers GG.<!--QuoteEnd--><!--QuoteEEnd-->


what ya doin up at 5:17am?

not still trying to get your brakes bled are you?

[LIAW]

ah ha so the man who once told me he couldn't can, good job fellow humany thing

[wicklamulla]

LOL @ LIAW !!! ya i hadda have a go some time i suppose !

GG i was up all noight int garage playing/stroking/pawing/gnawing/caressing No.7 ! wife was happy when i rubbed me cowld blue knob against her left buttock cheek at that time................anyway we awoke "some time later" as the cats were farting in me face and meowing fer breakfast.............FFS tis only 7.15 am !!! so not much sleep afterall.

[tdm850rider]

<!--sizeo:6--><!--/sizeo-->TMI<!--sizec--><!--/sizec-->

[roadrunner]

good bit of ifo i picked up ere mate cheers

[dapleb]

powerhouse-uk on ebay now sell a kit which includes the calipot half 'o'-rings. Got a set to try oot, will report back when fitted...2013 ish maybe. They look and feel exactly the same as the OEM seals.

[wicklamulla]

thas handy infermation indedy doo daah.

[LewisBlackburn]

I could probably do with doing this, especially when i have the advantage of a full spare rear line so have no excuses.



Im LAZYY !! OK !

[wicklamulla]

Hello all,     just revisiting this again as i tink the rear caliper cud do with anudder overhaul.   Anyone ever managed to get the rear pistons in stainless steel ?

[wicklamulla]

ahhhh i just phoned powerhouse-uk on 01246 260665 (cheers Dapleb)  and ordered a seal kit and 2 stainless pissedons.  

[dapleb]

They is bloody helpful that company.


Hmmm wonder if my post above aboot reporting back means I have a rear brake rebuild kit somewhere!!! Anyways the front pistons and seals were from them and went back together fine.

[wicklamulla]

de ting is the rear pistons on No.7 are 16 year old now and may well be a bit 'weathered' so i ordered the stainless versions at £22 each.

[dapleb]

When ewe finished cleanin up yer old calipots they looked a lot loike a cat! Thats a neat trick!

[wicklamulla]

well the overhaul kit is pricey but quite impressive i guess!    will see how it goes.

[fixitsan]

I've got a seal kit coming for mine. I got the calpot from a 1980 something FZ something (3HE iirc)


I'll check in if i get stuck