Fun with Brakes


Information and questions on GL1100 Goldwings (1980-1983)
  • Sponsored Links
User avatar
BigSwede
Posts: 48
Joined: Fri Dec 02, 2011 11:26 pm
Location: Sunnyvale, CA
Motorcycle: 1983 Gl1100

Fun with Brakes

Postby BigSwede » Mon Feb 27, 2012 10:26 pm



Got my Jeep back from the shop Friday so I could finally start going through the brakes on the 83 GL1100 I, I already had all the parts ready to go along with a shiny new mityvac, rebuilt the left front caliper, front & rear master cylinders, no major problems, I was amazed however that the brakes worked at all with so much sludge & dried gunk in them, blech! :o

Unfortunately it all came to a screeching halt when I removed the pistons from the right front caliper, it looks looks PO pulled them out with pliers, they're all scratched up with nice deep gouges :roll: :x Fortunately I found new OEM pistons on eBay for 15.00 each but of course now I have to wait for them to arrive. :cry:

Pulled/disassembled rear caliper tonite & pistons will be fine with a bit of polishing (thanks WingAdmin, for your excellent how-tos!)

Now for my question: before I started tearing into the brakes, I was getting this weird behavior with the rear pedal: I'd push down on the pedal and get some resistance, bike would slow but not getting as much braking power as normal. Push down harder and pedal would then sort of "give", move down some more and I'd get normal braking.

With master cyl off the pedal moves freely, so it's not sticking there, anybody have any idea what would cause this? Hopefully rebuilding everything will solve it...

Wondering if there's a problem with the proportioning valve? I found a place called gearhead.com that has new OEM ones for $61.51, I put in an order as who knows what kind of nasty gunk is in mine...


Thanks everybody, Mark

And when this is done, I get to figure out where the water in my oil is coming from. Was thinking head gasket(s) as no drips from the weep hole under the water pump but I looked the other day and there it is, the telltale drops (water) on the driveway, so maybe it's the water pump


Current:
83 GL1100 Interstate
Past:
76 GL1000
74 Honda CB350
86 Honda Elite 250
85 Yamaha Riva 175
82 Yamaha Seca 650
76 Yamaha RD400

User avatar
WingAdmin
Site Admin
Posts: 17046
Joined: Fri Oct 03, 2008 4:16 pm
Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: Fun with Brakes

Postby WingAdmin » Tue Feb 28, 2012 12:48 pm

I'm not sure how the proportioning valve works inside, someone else with an 83 will have to speak to that.

But if you are seeing coolant on your driveway, you can pretty much count on your water pump being the cause of coolant in your oil. Run the engine for a bit, then shut down and see if you're getting anything coming out of your weep hole.

User avatar
BigSwede
Posts: 48
Joined: Fri Dec 02, 2011 11:26 pm
Location: Sunnyvale, CA
Motorcycle: 1983 Gl1100

Re: Fun with Brakes

Postby BigSwede » Tue Feb 28, 2012 1:19 pm

Thanks WA, so if I remember correctly, I can take the pump cover off and if there is no play in the impeller, It's time for seals, if there is play, new pump too, correct?
Current:
83 GL1100 Interstate
Past:
76 GL1000
74 Honda CB350
86 Honda Elite 250
85 Yamaha Riva 175
82 Yamaha Seca 650
76 Yamaha RD400

User avatar
WingAdmin
Site Admin
Posts: 17046
Joined: Fri Oct 03, 2008 4:16 pm
Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: Fun with Brakes

Postby WingAdmin » Tue Feb 28, 2012 2:11 pm

BigSwede wrote:Thanks WA, so if I remember correctly, I can take the pump cover off and if there is no play in the impeller, It's time for seals, if there is play, new pump too, correct?


More or less...but to replace seals, you have to pull the whole front case/pump out anyway, so if you're going to do that you might as well replace the pump anyway - it will go eventually, and you really don't want to do that whole job again when it does. :)

User avatar
BigSwede
Posts: 48
Joined: Fri Dec 02, 2011 11:26 pm
Location: Sunnyvale, CA
Motorcycle: 1983 Gl1100

Re: Fun with Brakes

Postby BigSwede » Wed Feb 29, 2012 12:24 am

WingAdmin wrote: More or less...but to replace seals, you have to pull the whole front case/pump out anyway, so if you're going to do that you might as well replace the pump anyway - it will go eventually, and you really don't want to do that whole job again when it does. :)


Good point, doesn't look like something I'd want to do twice... (or once for that matter :lol: ) My local dealer can order a pump for around $145.00... my perfect timing rears its ugly head :? just spent 1700 on my 96 Grand Cherokee :roll:

So just to clarify, bad seals in/around the pump can cause water in the oil but not necessarily oil in the water? That's what I've got, nice mayonnaise coating inside the valve cover gaskets when I adjusted the valves after doing the timing belts a few weeks ago, I cleaned them out, should probably pull one and see how it looks now...
Current:
83 GL1100 Interstate
Past:
76 GL1000
74 Honda CB350
86 Honda Elite 250
85 Yamaha Riva 175
82 Yamaha Seca 650
76 Yamaha RD400

User avatar
WingAdmin
Site Admin
Posts: 17046
Joined: Fri Oct 03, 2008 4:16 pm
Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: Fun with Brakes

Postby WingAdmin » Wed Feb 29, 2012 11:10 am

It can really go either way...but it's almost always water being forced into the oil. That said, I've also never heard of an outer O-ring seal going and causing oil/coolant contamination, because when the O-ring fails, the coolant/oil tends to go out the weep hole (unless some creative owner has "fixed" the leak by inserting a screw/bolt into the weep hole, which I've seen more than once). In theory that's what's supposed to happen if one of the internal pump seals goes as well, but in practice it usually also ends up contaminating the oil.

User avatar
virgilmobile
Posts: 7653
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Fun with Brakes

Postby virgilmobile » Wed Feb 29, 2012 11:35 am

I think.....
the proportioning valve purpose in life is to ensure that if one caliper or line to it should fail the valve will be able to operate the other caliper.
With equal pressure on each line the valve stays centered.If one fails,as you apply the brakes,it shoves the valve to close off the failed brake.

It may also determine how much percentage of pressure is diverted to each caliper.Not sure about that tho.
Brake experts can chime in here anytime.
If the brake pedal feels weird,it probably id due to air in the line or valve.Vacuum it out.

User avatar
bobalooby1
Posts: 57
Joined: Thu Mar 10, 2011 8:22 pm
Location: jefferson ohio
Motorcycle: 1983 goldwing interstate

Re: Fun with Brakes

Postby bobalooby1 » Thu Mar 01, 2012 5:11 pm

Bigswede... as you work on the '83 brake system. and while you have things apart.. i would like to suggest you consider installing stainless steel brake lines on your '83 1100.. Others will tell you here.. The 1100 braking action is nothing to write home about that's for sure.! The stock rubber hose's expand under brake pressure taking force away from your calipers. With the design of the stainless brake lines their is minimal,( if any) expansion of the brake lines under fluid pressure... i own the same Model Goldwing as yourself... I never cared a whole lot for it's braking action... They always felt "Spongey" !! no matter what... i installed stainless steel brake lines last season on my own '83 1100... And man, let me tell you.! i feel as if i could stop on a dime now, and hand you back a nickel.! no more spongey brakes.! it's worth my safety, and the money spent to install stainless Brake lines. Ride Safe

User avatar
BigSwede
Posts: 48
Joined: Fri Dec 02, 2011 11:26 pm
Location: Sunnyvale, CA
Motorcycle: 1983 Gl1100

Re: Fun with Brakes

Postby BigSwede » Fri Mar 02, 2012 12:09 am

bobalooby1, yup, the braided lines were the first thing I bought when getting ready for this job :D

Got my new pistons today, (2 days from New Jersey, yay!) Now I've got all the calipers/masters rebuilt and ready to go on as soon as the pads arrive @ the dealer, hopefully tomorrow.

Hopefully it will be all back together Saturday...


Current:
83 GL1100 Interstate
Past:
76 GL1000
74 Honda CB350
86 Honda Elite 250
85 Yamaha Riva 175
82 Yamaha Seca 650
76 Yamaha RD400


Return to “GL1100 Information & Questions”




Who is online

Users browsing this forum: Google [Bot] and 3 guests