Brakes Lock Up


Information and questions on GL1500 Goldwings (1988-2000)
  • Sponsored Links
jqtandberg
Posts: 11
Joined: Mon Dec 20, 2010 9:58 am
Location: Orange, TX
Motorcycle: 1995 GL1500 Aspencade

Brakes Lock Up

Postby jqtandberg » Fri Feb 25, 2011 8:25 am



I am having trouble with the rear braking system on my 1995 Aspencade. I have replaced the rear master cylinder and the rear caliper - the front caliper looks to be OK. The brakes work fine, then after about 30 minutes of riding, both brakes in the rear brake system lock up. If I crack the bleed valve on the front caliper, both brakes release immediately and I can ride the bike. Those brakes are very mushy at this point. The other front brake works just fine so I am able to get home without incident. I don't think the front caliper is sticking because it releases immediately when I crack the valve. Any help would be appreciated.



User avatar
virgilmobile
Posts: 7645
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: Brakes Lock Up

Postby virgilmobile » Fri Feb 25, 2011 8:58 am

When you let off the brake pedal the master cyl piston returns to it's resting spot.this allows the brake pressure to be bled off back to the reserve thru a bleeder hole th the casting.i'd check to see if the brake pedal isn't holding the piston in a little.There should be a little free play at the pedal before it starts pushing the piston in.If it can't bleed off the pressure the fluid will expand with the heat of riding and bind the brakes.

User avatar
thrasherg
Posts: 1837
Joined: Tue Oct 20, 2009 11:21 am
Location: Plano, TX
Motorcycle: 2004 GL1800, 2005 Honda Shadow 750, 2008 Yamaha R6 with RG500 engine, CRF450X, CRF230, CRF250X, XR200, CR500

Re: Brakes Lock Up

Postby thrasherg » Fri Feb 25, 2011 10:17 am

As mentioned, you either have the brake pedal incorrectly adjusted or the very small return hole in the master cylinder is blocked (Probably more likely).
You will need to remove the filler cap, get a fine pin and try to poke the hole clear..

Gary

jqtandberg
Posts: 11
Joined: Mon Dec 20, 2010 9:58 am
Location: Orange, TX
Motorcycle: 1995 GL1500 Aspencade

Re: Brakes Lock Up

Postby jqtandberg » Fri Feb 25, 2011 10:24 am

Thanks for the quick response. I will follow your suggestion!

User avatar
thrasherg
Posts: 1837
Joined: Tue Oct 20, 2009 11:21 am
Location: Plano, TX
Motorcycle: 2004 GL1800, 2005 Honda Shadow 750, 2008 Yamaha R6 with RG500 engine, CRF450X, CRF230, CRF250X, XR200, CR500

Re: Brakes Lock Up

Postby thrasherg » Fri Feb 25, 2011 12:24 pm

It's a long ride, but if you fancy driving to Austin, I would be more than happy to feed you and help fix the problem..

Gary




Return to “GL1500 Information & Questions”




Who is online

Users browsing this forum: Bing [Bot], ih8boats, MSNbot Media [Bot], shomann, Tamej and 2 guests