cummins2014
Utah
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Well here goes again , a leaking tire on the fifth wheel got all this started, while the tire was off thought I would pull the hub to see what size grease seals I would need to pack the bearings. What I discovered was a broken plastic dust cap, and worn out disc brakes. Bought the four new grease seals ,and 2 new sets of disc brake pads.
All went well on the first one ,packed the bearings ,changed the pads ,I put a clamp on the caliper piston to push it back to give me enough room to get the caliper back on , no problems . Proceded on the second one, got to the part where I clamp the piston back for more clearance, and it will absolutely not move, even put a cheater on the clamp no go. Never had a caliper piston before that couldn't be pushed back in . Anyone have any suggestions how to get that piston to release ??
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Home Skillet
Pearland Texas
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Just replace the caliper.
A sticking caliper will make the pads drag, causing over heated brakes.
Or, loosen the bleeder screw while pushing the piston in.
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cummins2014
Utah
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Home Skillet wrote:Just replace the caliper.
A sticking caliper will make the pads drag, causing over heated brakes.
Or, loosen the bleeder screw while pushing the piston in.
Thanks. I'll see if the bleeder screw will let it go, that was my next move, but thought there might be other ideas , but leaning toward a new caliper.
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cummins2014
Utah
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All's good , more operator error then anything. I usually use some adjustable welders clamps or just a C-clamp. Putting pressure just on one side of the piston, has always worked, not this time . Well google is a wonderful thing , placed a piece of 1/4" plate across the piston .and put on the c-clamp in the center, and it went right in like it should, no froze piston after all.
Learned something today. Although I did the axle behind like I usually do without a problem.
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94-D2
Sutter Creek ca
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I always use the old brake pad to center the pistons to push in. Works every time....
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Tvov
CT
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94-D2 wrote:I always use the old brake pad to center the pistons to push in. Works every time....
LOL! After all these years, I never thought of that. I always seem to search for a more complicated solution!
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opnspaces
San Diego Ca
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94-D2 beat me too it. I always use an old brake pad to both center the pistons as well as protect them from damage.
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Cummins12V98
on the road
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Clamping the edge for sure can cause the piston to bind.
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cummins2014
Utah
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Cummins12V98 wrote:Clamping the edge for sure can cause the piston to bind.
And I’ve pushed in more pistons then I can count , and that was a first pushing on the edge and binding . I’ll for sure never give one a chance again .
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John&Joey
Summer-North,Winter-South
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I would replace the caliper. Very possible the piston has rust on it. If the seal doesn’t look perfect,then that’s the problem. Might be able to push it in, but it won’t be right.
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