bdalameda
PaleoCyclist
Well since I have not been riding my ST1100 much over the last few ears since buying my Africa Twin I decided to go over it and rebuild the brakes system. I rebuilt all the calipers, bought a brand new rear master cylinder and rebuilt the front master cylinder and SMC. Since new SMCs are not available in the US (you can get them from Europe for about $300USD) I got a kit. I removed the SMC and flushed it out and installed the kit.
The kits do not come with the small plastic screen and one-way valve that is fitted to the side of the SMC. I carefully removed this valve to clean it out. These valves are really delicate to take apart and clean and much to my chagrin, a small black hole opened up in my garage and the tiny ball and spring were sucked into another dimension and lost forever. Hmm - what to do? I looked on Ebay and found a couple of used SMCs that were pretty rough looking. While looking on Ebay I noticed a few GL1800 (2001-2016) SMC's. These looked very similar to the ST1100 SMC. Obviously these would not interchange but I got to thinking that the small screen and valve may be the same as the ST1100. The GL1800 had a similar port on the side of the SMC with the two 6mm screws holding the cover fitting on. The GL1800 SMC's are very cheap as well. I ordered one to test the theory that the parts from the GL1800 SMC may interchange with the ST1100 SMC. I received the GL1800 SMC yesterday and took the cover fitting off and discovered that the small plastic screen and valve are identical to the ST1100 SMC. I bought a new GL1800 OEM SMC on Ebay for $22.00.
So for anyone with a ST1100 with linked brakes and an SMC you can get a replacement valve by ordering a GL1800 SMC. Here's a picture:
The kits do not come with the small plastic screen and one-way valve that is fitted to the side of the SMC. I carefully removed this valve to clean it out. These valves are really delicate to take apart and clean and much to my chagrin, a small black hole opened up in my garage and the tiny ball and spring were sucked into another dimension and lost forever. Hmm - what to do? I looked on Ebay and found a couple of used SMCs that were pretty rough looking. While looking on Ebay I noticed a few GL1800 (2001-2016) SMC's. These looked very similar to the ST1100 SMC. Obviously these would not interchange but I got to thinking that the small screen and valve may be the same as the ST1100. The GL1800 had a similar port on the side of the SMC with the two 6mm screws holding the cover fitting on. The GL1800 SMC's are very cheap as well. I ordered one to test the theory that the parts from the GL1800 SMC may interchange with the ST1100 SMC. I received the GL1800 SMC yesterday and took the cover fitting off and discovered that the small plastic screen and valve are identical to the ST1100 SMC. I bought a new GL1800 OEM SMC on Ebay for $22.00.
So for anyone with a ST1100 with linked brakes and an SMC you can get a replacement valve by ordering a GL1800 SMC. Here's a picture:
