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Brakes,
Hydraulic
Parts
Note:
Note:
Machining cylinder bores and pistons is not
approved. Replace pistons or complete brake
caliper section, as applicable.
Mount dirt scraping ring in brake caliper
section that the ring's printed part number
faces in.
The sealing lip then faces out (in contradic-
tion to the normal position of a radial shaft
seal) and prevents the entry of dirt and
water.
3. If the brake caliper section is in good
condition,
check whether connecting
bore
between the cylinder
bores is plugged.
Clean bores with compressed air.
4. Clean new seals and scraping rings with
alcohol and dry with compressed air.
Assembling
1. Give cylinder
bores, pistons and seals a
thin coat of brake cylinder
paste.
2. Place seals in grooves of cylinder bores.
3. Mount dirt scraping rings in correct position
with a suitable pressure pad.
Drive in dirt scraping rings at least so far,
that they do not protrude beyond the
machined surface of the brake caliper
section.
4. Press in piston by hand slowly.
Check position of the milled surface on
the piston's face during this step (see
page 46 -3). If it is necessary to turn
the piston after installation in the brake
caliper section, a suitable tool (e. g.
ATE piston turning pliers) must be used.
Printed in Germany
Disassembling and Assembling
Brake Calipers
47-10
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