front brake reservior frozen...
- Thread starter keso
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Yes I would do the same. Crusty old brake fluid. :?
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+1 heat
Soak it with penetrating oil first, apply daily for a week, can try to remove with a strap wrench periodically.
If and wen you are ready to write off the cap get your Dremel out and cut some shallow reliefs in the threaded area or just grab the cap with a stout set of water pump plyers; the big brother to the vice-grip family. If you have the skill and get to the Dremel stage then simply cut a 1/2" square in the center of the cap and use a 1/2" drive murder bar to spin it off.
If the cap is in the shape necessary to cause this situation the rest of the master can't be far behind, you may want to throw-in-the-towel and get a new or re-manufactured one which will (should) be sleeved to increase the mechanical (hydraulic) advantage.
Soak it with penetrating oil first, apply daily for a week, can try to remove with a strap wrench periodically.
If and wen you are ready to write off the cap get your Dremel out and cut some shallow reliefs in the threaded area or just grab the cap with a stout set of water pump plyers; the big brother to the vice-grip family. If you have the skill and get to the Dremel stage then simply cut a 1/2" square in the center of the cap and use a 1/2" drive murder bar to spin it off.
If the cap is in the shape necessary to cause this situation the rest of the master can't be far behind, you may want to throw-in-the-towel and get a new or re-manufactured one which will (should) be sleeved to increase the mechanical (hydraulic) advantage.
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RoadScholar said:
Does Norton use natural rubber or EPDM for the seals in the brake components? EPDM does not like petroleum [penetrating oil] Heat will loosen up that cap, but will most likely ruin the rubber bellows below. If the cap is seized odds are the master cylinder needs an overhaul. Great time to do the 13mm bore reduction conversion. Rather than brutalizing the cap, wrap it with thick cardboard. Then grip it with slip joint [aka Channel lock] pliers. This will give a tight grip, without buggering up the cap.
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The rubber bellows are shot. Re-sleeve. 
Brake fluid is highly hygroscopic. Alloy and water+time=corrosion cell. Could be ruined already.
Try the strap wrench, as suggested and work it back and forth, a little at a time. A little heat may help, followed by your favourite penetrating fluid, but the threads could be largely dust.
Try the strap wrench, as suggested and work it back and forth, a little at a time. A little heat may help, followed by your favourite penetrating fluid, but the threads could be largely dust.
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