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ABS II

 
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Jim
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Joined: 17 May 2003
Posts: 3840
Location: WHERETHEFUNNEVERENDS

PostPosted: Sat Nov 18, 2017 12:31 am    Post subject: ABS II Reply with quote

It appears there's a stuck piston in the ABS modulator. Anyone here heard of someone who fixes these things? Other than the stealer?

I think Ernie had one apart, and got it back together, but it didn't last.
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Jim
1997 K1100LTSE 94,000 - has gremlins!
1995 R100RT Classic 16,650 crashed - repairing
1992 K75RTP 46,000
1992 R100R 24,000 - FOR SALE

"We shall not all die, but we shall all be changed."
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SugarHillCTD
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Joined: 10 Oct 2007
Posts: 4240
Location: Now in Eastern Pennsylvania

PostPosted: Sat Nov 18, 2017 6:21 am    Post subject: Reply with quote

Nuts Jim, I remember someone, somewhere had a step by step guide on how to rehab an ABSII unit.

Now if I could just remember where..........
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Scott_Anderson
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Joined: 05 Sep 2006
Posts: 3117
Location: Central Iowa, USA

PostPosted: Sat Nov 18, 2017 10:23 am    Post subject: Reply with quote

I'm not sure that even a stealer would "repair" one. From a liability standpoint they would more than likely only offer a new replacement.

Anyway, Jim check here:
https://modulemaster.com/rebuilds/shop/brakes/abs-modules/abs-fte-abs2/

I read some posts from MOA that did say he does do mechanical rehab of the pump assy, as well as electronic repair of the controller if needed.(that was 5 yrs ago)

Its at least worth a phone call.
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1995 K1100LT 0302044
1997 R1100RT ZC62149
2017 FLHTK Ultra Limited
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"One who does not ask questions is ashamed to learn" Danish proverb
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Jim
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Joined: 17 May 2003
Posts: 3840
Location: WHERETHEFUNNEVERENDS

PostPosted: Sat Nov 18, 2017 2:01 pm    Post subject: Reply with quote

Thanks, Scott!

I knew about ModuleMaster, but didn't realize they might also work on the modulator/pump.

Certainly worth a try...
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Jim
1997 K1100LTSE 94,000 - has gremlins!
1995 R100RT Classic 16,650 crashed - repairing
1992 K75RTP 46,000
1992 R100R 24,000 - FOR SALE

"We shall not all die, but we shall all be changed."
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Ernie-NH
Flying Brick Rider


Joined: 14 Oct 2009
Posts: 982
Location: Bristol, New Hampshire

PostPosted: Sun Nov 19, 2017 7:50 pm    Post subject: Reply with quote

Hi Guys....

"YES'... Jim is correct. I did get into the "plunger side" of the ABS-II with some guidance form Inge. In my case : I first removed the heavy unit from the bike...( major PIA ).... and then went into the top end the way the Report on IBMWR explained and pictured. That end is little more than the top end of the plungers that actually apply/release braking pressure in accordance I assume from mechanical or electrical sensing within the "brain".... There is a ball, a small spring, a rubber cup and a very small hole in the side-wall perhaps no greater than 0.010 to 0.015 in diameter which allows the fluid above the rubber cup to be either "forced out" by normal braking pressure, or released slightly to relieve braking pressure when signaled by the "brain" to do so. The force driving these plungers "upward" is enourmous and comes from the wicked huge springs beneath them. NO WAY would I attempt to dismantle the lower unit... my problem was blockage of that small control orifice from degraded rubber particles. So I took a piece of pipe, fit a football airfill-needle to the hole in the end, then ground off the end of the needle to concentrate and direct the high pressure air. On the opposite end I put a compressed air fitting. I attached this to my shop compressor line at 120 psi... and blew out through the tiny holes as best I could. I put it all back together and "It worked" all season of 2015. After the winter rest of 2015/2016 it was back to the 'non functional" once again and I have not played with it again. The little rubber cup-seals are there to prevent the brake fluid from entering the lower portion where the heavy springs and the torque motor are located. I obviously cant say this for sure, but I believe the majority of ABS-II problems have to do with the degradation these little rubber-cups. IF I knew where to get some I would, and you would all get a lifetime supply...
So thats been my one and only experience in dealing with ABS-II

Have fun... Ride Safe.....// Ernie in NH
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