Replacing Primary Sealing Boot, Rear Brake Master Cylinder; (Inspection Iii, Every 40,000 Km/24,000 Miles For Motorcycles With Abs) - BMW F 650 GS Repair Manual

Replacing primary sealing boot, rear
brake master cylinder
(Inspection III, every 40,000 km/24,000 miles for
motorcycles with ABS)
– Place the motorcycle on its main (centre) stand.
e
Caution:
Do not allow brake fluid to come into contact with
painted parts of the motorcycle, because brake fluid
destroys paint.
•
Drain the rear brake system.
2
•
Disengage piston thrust rod (1).
•
Remove the piston thrust rod complete with
sealing boot (2).
•
Carefully force back the brake piston.
•
Remove the circlip.
•
Use pliers to remove the brake piston.
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5
6
•
Remove spring (4) with insert (3).
e
Caution:
Note the washer between the brake piston and the
boot.
•
Remove front boot (5).
•
Installation is the reverse of the removal proce-
dure: pay particular attention to the following.
e
Caution:
Sealing lip of the boot toward the pressure cham-
ber.
L
Note:
Replace O-ring (6) prior to installation.
•
Install new front boot.
•
Prior to installation, coat the brake piston and the
boots with the assembly fluid supplied.
•
Lightly grease the thrust rod with
Shell Retinax A.
•
Fill and bleed the brake system.
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