William Ortel Porsche Repair

Disassembling And Assembling Brake Calipers

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Disassembling

1. Clamp caliper in a vise with soft jaws and detach connecting line.

3. Drive off brake caliper halves from bridge by applying knocks from a plastic hammer alternately.

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4. Countersunk screws of spring plate are locked in bridge with Loctite 270. To 2. Unscrew bolts holding halves of brake unscrew, heat screws to approx. 150 °C.

caliper. This is necessary to prevent stripping threads in bridge.

Initial Version

1. After replacing or loosening, lock countersunk screws for spring plate with Loctite 270.

Install spring plate with retaining tab on bridge without opening.

Note:

Following changes have been made on spring plates since the beginning of standard production.

A lockplate for protection of the cross spring is required on spring plates with opening in initial version. In the modified version a spring plate with pertinent openings protects the cross spring.

A conversion is only possible with conformance with point 4 on page 47 - 4 and use of correct spring plate (see note below).

— The countersink to take the mounting screws is larger for all spring plates since 1984 models and therefore the bridges had to be changed, too. Spring plates with larger countersinks ( present version 12.8 — 0.2 mm diameter; was 11.5 + 0.5 mm) cannot be used on old bridges.

Cross spring

Initial Version

Cross spring

Lockplate

Modified Version

Spring Plates with Larger Countersink

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