21.8. Replacement of brake shoes of a forward brake of Brembo
Removal
Brake shoes are equipped with the wear indicator. If thickness of brake shoes less than 3 mm, in a combination of devices lights up a control lamp.
Weaken bolts of fastening of a forward wheel, lift a forward part of the car and fix on supports. Unscrew bolts of fastening and remove a wheel.
Surely replace all blocks on one axis of the car even if only one of them is worn-out. If old brake shoes establish again, before removal they need to be marked.
In need of replacement replace both forward brake disks. Before removal of a brake disk it is necessary to remove a support.
Fix a brake disk, having screwed in one bolt of fastening of a wheel.
Take a wire of the sensor of wear of a brake shoe from an arm in a support. For this purpose an edge of the screw-driver squeeze out the rubber plug with a wire from an arm and turn it on 90 ° at first in one, then in other party.
Disconnect the electric socket of the sensor of wear of a brake shoe.
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Fig. 15-13. Elements of fastening of brake shoes of a forward brake Brembo: 1 – clamp; 2 – pin; 3 – the fixing spring
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Take towards the car pins 2.
Remove the fixing spring of 3 brake shoes.
Using the screw-driver edge inserted between the piston and an internal brake shoe, press the piston into a support (fig. 15-14). At cave-in of the piston brake fluid is forced out from the brake cylinder in a broad tank therefore constantly control liquid level in a tank, and if necessary pump out a small amount from a tank.
Remove an internal brake shoe.
Using the screw-driver edge inserted between the piston and an external brake shoe, press the piston into a support (fig. 15-15).
Remove an external brake shoe.
Installation
Do not press a brake pedal at the removed brake shoes.
Purify dust and dirt from a support, and from edge of a brake disk – a rust. If blocks are suitable for further operation, clear them a wire brush and rags.
Check a brake disk for existence of cracks, especially around openings under bolts of fastening of a wheel, and also and if necessary replace it with existence of wear or mechanical damages.
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Fig. 15-12. Forward brake of Brembo: 1 – brake disk; 2 – support; 3 – brake shoes; 4 – the fixing spring of a brake shoe; 5 – pins; 6 – clamps; 7 – bolt, 110 N · m; 8 – arm; 9 – brake tube, 15 N · m; 10 – socket of the indicator of wear of a brake shoe
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At installation use new bolts 7 (see fig. 15-12).
Establish brake shoes in a support of a forward brake.
Establish a spring on brake shoes, insert pins and fix them by clamps (see fig. 15-13).
Fix a wire of the indicator of wear of brake shoes and connect the socket.
Unscrew a bolt of fastening of a wheel and a brake disk. Establish a wheel and lower the car on the earth. Tighten bolts of fastening of a wheel the moment of 120 N · m.
Similarly replace brake shoes on the second forward wheel.
Several times press a brake pedal that brake shoes nestled on a brake disk.
Check the level of brake fluid in a tank, if necessary add.
After installation of new brake shoes avoid sharp braking the first 200 km of a run of the car.