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R90S Caliper Service
- schrader7032
- Posts: 9016
- Joined: Fri Oct 27, 2006 3:00 am
- Location: San Antonio, TX
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I'm not sure how else to
'78 R100/7 '69 R69S '52 R25/2
Fast. Neat. Average. Friendly. Good. Good.
ATE piton install
A press is best to insert the piston and the boot, but a C-clamp will do. Use a little silicone grease on everything. Attach the boot to the piston and start the piston in until the boot is touching the caliper. Now put the tool over the piston and press the boot into the recess in the caliper. It might snap in with a loud POP! So be prepared for that.
Randy
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- San Arthur
- Posts: 577
- Joined: Sun Apr 22, 2007 2:08 pm
- Location: San Antonio, TX.
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Pictures please
A press is best to insert the piston and the boot, but a C-clamp will do. Use a little silicone grease on everything. Attach the boot to the piston and start the piston in until the boot is touching the caliper. Now put the tool over the piston and press the boot into the recess in the caliper. It might snap in with a loud POP! So be prepared for that.
Randy
Thanks Randy, could you send a couple of more pictures from different angles.
Sincerely,
Arturo
'58 R26 '76 R90S '88 R100RS '94 R100GS/PD
- San Arthur
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With a little help of my friends and Dill Weed.
I installed the dust covers with a dill weed spice jar lid.
The lid is the exact size to push the dust cover in place.
But you have to be very careful or you could damage it.
New brake pads.
I'm going to wait for the rain to pass to test the brake alignment. I'm sure I'm going to need to align the rotors and/or the wheel too.
I'll keep you posted.
'58 R26 '76 R90S '88 R100RS '94 R100GS/PD
No, No, No
I don't use DOT 5 fluid as silicone will not cause rust in the bore of the caliper but often it will seep past a worn seal...DOT 4 (regular disk brake fluid works fine)....
Another trick....you need a line wrench to remove bleeder screws....sometimes they can be stuck...and they break off easily... before you break one off...take a long socket that slides over the bleeder screw and give it a couple of good wacks with a hammer....that will flex the threads in the caliper the bleeder to screw out easily...works every time...
Joel Rapose
ASE Master Mechanic
- San Arthur
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Thanks
'58 R26 '76 R90S '88 R100RS '94 R100GS/PD
- San Arthur
- Posts: 577
- Joined: Sun Apr 22, 2007 2:08 pm
- Location: San Antonio, TX.
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Almost ready to test, but
'58 R26 '76 R90S '88 R100RS '94 R100GS/PD
- San Arthur
- Posts: 577
- Joined: Sun Apr 22, 2007 2:08 pm
- Location: San Antonio, TX.
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Rotors and clogged carburators
I ordered and replace both nipples.
A few weeks after I install the tank, open the petcocks and chock; gas start pouring out of them.
I noticed that the gas handle was stuck open and after a quick look inside the float chamber I notice that also a float was stuck open.
I tried carb cleaner to no avail. I unmounted the carbs and both are clogged.
I order a couple of Dellorto service kits and a few parts, like jets, float valves, etc.
'58 R26 '76 R90S '88 R100RS '94 R100GS/PD
- San Arthur
- Posts: 577
- Joined: Sun Apr 22, 2007 2:08 pm
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easier said than done
I taped the valves and nipples together to keep the springs in place, but couldn't get enough slag to screw the plug in.
The easier way, and I tried a few different, was to bring down the air cleaner housing with the chock still attached.
And also uninstalled the choke valve housing from each carb and assemble the choke system on the bench.
After this, I install the left housing by screwing it into place.
For the right carb I had to uninstall the carb, to screw the housing in place. This because the housing is on the inside making it imposible to use a screw driver.
'58 R26 '76 R90S '88 R100RS '94 R100GS/PD
- San Arthur
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- Joined: Sun Apr 22, 2007 2:08 pm
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Accelerator pumps
Read Rick´s information first. Is what I followed.
I found the 3/16 id 5/16 od hose at Lowe´s and I purchased the graduated cylinders on E-Bay.
I easier to unmount the right carb to place the pipe in. The left is no problem since the pump jet screw is on the outside. You obviously need to take the screws and jets out.
No need to move the carb.
You need to plug this hole with the tape.
Like this, and don´t forget to take the tape off. All of it.
I almost left a piece there.
You will calibrate the pumps to get 6 ml on both carbs.
Mine were at 9 ml and 0 ml the left. I had to open it all the way because air bubles.
I prefer a little rich.
'58 R26 '76 R90S '88 R100RS '94 R100GS/PD