lockheed caliper piston removal

WASPER · Oct 1, 2010

Anyone got any ideas on how to remove the pistons from the caliper intact - they are not totally seized in, but very stiff after a few years out of use?

grandpaul · Oct 1, 2010

Soak well in penetrant for several days, then dump in a pot of boiling water and let sit for about 2 minutes.

Wrap in a towel and give the lump a smart rap on a soft wood board; one side, remove loose puck, then the other side, remove 2nd puck.

swooshdave · Oct 1, 2010

Brake Caliper Teardown (yes, with pictures!)

Yup, another part that needs servicing. Who would have thunk? Next up is the front brake caliper. I've read a bit and I'm pretty sure I know what I need to do. As mentioned previously in another episode these parts haven't been on a bike in many a year. These pistons are well wed to the...

www.accessnorton.com

stockie1 · Oct 1, 2010

another trick is to replace the bleed nipple with a grease nipple /zerk and pump out with grease gun, hold the first one that moves to get the next one moving, the one in the fixed side is hardest to remove, so make sure it moves before the one behind the cover.
Cheers Richard

WASPER · Oct 1, 2010

grandpaul said:
Soak well in penetrant for several days, then dump in a pot of boiling water and let sit for about 2 minutes.

Wrap in a towel and give the lump a smart rap on a soft wood board; one side, remove loose puck, then the other side, remove 2nd puck.

Thanks grandpaul- that will be my first line of attack. I had the pistons made in SS, so i don't want to trash them (or I would just drill tap and pull them)

WASPER · Oct 1, 2010

swooshdave said:
http://www.accessnorton.com/brake-caliper-teardown-yes-with-pictures-t5458.html

Excellent! especially to know I am not missing something simple about this excersise! Some good ideas and one contingency (the bolt)

WASPER · Oct 1, 2010

stockie1 said:
another trick is to replace the bleed nipple with a grease nipple /zerk and pump out with grease gun, hold the first one that moves to get the next one moving, the one in the fixed side is hardest to remove, so make sure it moves before the one behind the cover.
Cheers Richard

I also broke the nipple as it sheared in the hole, so I need to remove that too, but nonethelss this is the only plan b I think.

Bazz · Oct 2, 2010

Have a look at the technical articles on the Old Brits website(http://www.oldbrits.com) under commando caliper rebuild. There are some good hints on how to remove seized pistons
HTH
Bazz

1970 T120 R Triumph
1973 Norton Commando 750
1979 BMW R 100S
1993 Harley Dyna Wide Glide

lockheed caliper piston removal

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