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Complete GL1800 Maintenance video now available at
http://www.angelridevideos.com
Here is the valve body remove from the fork leg, with fork oil all drained out
Here is the valve body remove from the fork leg, with fork oil all drained out
Here is a glimpse inside the valve
Here is a glimpse inside the valve
Here I am removing the top bleeder mount so I can then remove the upper piston
Here I am removing the top bleeder mount so I can then remove the upper piston
Top bleeder assy comes off with a 19mm socket
Top bleeder assy comes off with a 19mm socket
Here is a look at the actuator. This is in the off position
Here is a look at the actuator. This is in the off position
By pushing up on the left brake caliper, you should see the actuator come out as shown here if it is working properly
By pushing up on the left brake caliper, you should see the actuator come out as shown here if it is working properly
The manual advises you to lubricate this actuator. I used silicone grease
The manual advises you to lubricate this actuator. I used silicone grease
Here is the actuator removed from the upper section of the valve body
Here is the actuator removed from the upper section of the valve body
Carfully inspect the O rings. Some have been found to be cut
Carfully inspect the O rings. Some have been found to be cut
Here is a look inside the upper section of the valve body
Here is a look inside the upper section of the valve body
This is looking in from the bottom of the lower section with the piston removed
This is looking in from the bottom of the lower section with the piston removed
I lubricated the O rings with silicone grease before re-installation
I lubricated the O rings with silicone grease before re-installation
Once the valve is back together, if you fill the top with brake fluid before you re-install the bleeder, it will bleed easier
Once the valve is back together, if you fill the top with brake fluid before you re-install the bleeder, it will bleed easier
Home made third hand for helping bleed rear brake system
Home made third hand for helping bleed rear brake system
Here I am seperating the halves of the valve to look at the lower section
Here I am seperating the halves of the valve to look at the lower section
This is the top of the lower section of the valve
This is the top of the lower section of the valve
You have to remove the snap ring to remove the lower piston
You have to remove the snap ring to remove the lower piston
Here is the lower piston removed. There is a spring underneath it.
Here is the lower piston removed. There is a spring underneath it.
Here is a look at the lower piston.  Brake bleeder for the top section shown in background.
Here is a look at the lower piston. Brake bleeder for the top section shown in background.
Valve fully retracted, protudes 6mm
Valve fully retracted, protudes 6mm
Valve fully extended protrudes 9 mm
Valve fully extended protrudes 9 mm
When released, valve only retracts 1mm due to tight O rings
When released, valve only retracts 1mm due to tight O rings
Measuring the resting point of lower valve
Measuring the resting point of lower valve
Lower valve resting point is about 9mm
Lower valve resting point is about 9mm
Add 2 mm for the lip on the edge of the valve body
Add 2 mm for the lip on the edge of the valve body
Front wheel bearings.  Note they are two bearings stuck together by a plastic ring
Front wheel bearings. Note they are two bearings stuck together by a plastic ring
The number printed on the bearing is 6004LU
The number printed on the bearing is 6004LU
anti-dive valve diagram
anti-dive valve diagram
.035 inch shim for anti dive
.035 inch shim for anti dive
Shim is installed under bleeder valve assy
Shim is installed under bleeder valve assy
Shim in place
Shim in place
Normally there is a 1mm gap between the halves when the upper valve is retracted
Normally there is a 1mm gap between the halves when the upper valve is retracted
Upper valve normal resting point shows about 6mm protruding
Upper valve normal resting point shows about 6mm protruding
With shim in place, upper valve now only protrudes 5mm
With shim in place, upper valve now only protrudes 5mm
With shim in place, no gap occurs and upper and lower valves are just barely contacting
With shim in place, no gap occurs and upper and lower valves are just barely contacting
BlownSeal 006.JPG
BlownSeal 006.JPG