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the_virtua_striker

HS33 issue

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Hi!! 

Owing to my thread in the beginners chat I thought I'd go into a bit more detail about the issue I have with my HS33 rear. 

It was sold to me as only needing the crossover line replaced. It was, and bled. Was still spongy. 

The whole thing was taken apart. The lever and pistons scrubbed and warm soapy water passed through everything using the bleed kit. All thoroughly done. 

All new lines and a careful bleed with magura fluid. 

The brake was carefully installed and aligned properly. It's still a wee bit spongy but a fair bit is frame flex.

However I've noticed that when I push the lever, the lever engages the piston (in the lever) and goes in around 5mm before there is any movement from the brake pads Ie. There is play in the lever piston..... And the pistons at the pads are slightly slow to return. 

This does not happen with the front brake. As soon as you engage the lever, the pads start to move. 

Anyone got any suggestions? This is doing my head in

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Air in the system. 

For the slow to return piston, u need to lube the pistons and the pull the lever whisky holding one piston down at one time.. So one piston fully goes in and out and lubes itself. Then repeat on the opposite piston. 

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As Joe said, there's air in there.  If pulling the lever doesn't immediately move the pistons in the calipers, that's due to air in the system.

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