Benelli TNT 25 Maintenance Manual page 282

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Disassembling Rear Brake Master Cylinder
•Disassemble:
Rear Brake Master Cylinder tightening bolts [A]
Bolt [B]
Rear brake lamp switch sensor [D],
Brake hose [B],
Rear Brake Master Cylinder [G]
•Slide out the clamp [F].
•Pull out the lower end of the oil cup hose [E] and drain the brake
fluid into a container.
Installing Rear Brake Master Cylinder
•Replace the gaskets on both sides of the hose joint with new ones.
•Install:
The operations should be conducted in reverse order of disassembly.
•Locking torque:
Locking Torque of Rear Brake Master Cylinder Mounting bolt: 25 N•m
Locking Torque of Rear Brake Lamp Switch Sensor: 25 N•m
•Exhaust air from the brake pipe (see "Air Bleeding in the Brake Pipe").
•Check whether the braking performance of the brakes is normal and the brake fluid leaks.
Disassembling Front Brake Master Cylinder
•See "Regular Maintenance" —"Replacing Rubber Parts of Brake Master Cylinder".
Disassembling Rear Brake Master Cylinder
•See "Regular Maintenance" —"Replacing Rubber Parts of Brake Master Cylinder".
Assembling Brake Master Cylinder
•See "Regular Maintenance" —"Replacing Rubber Parts of Brake Master Cylinder".
Checking Brake Master Cylinder (Visual Check)
•Disassemble the Brake Master Cylinder (see "Disassembling Front / Rear Brake Master Cylinder").
•Disassemble the front and rear Brake Master Cylinder (see "Regular Maintenance" —"Replacing Rubber Parts of Brake
Master Cylinder").
•Check for scratches, rust or sag on the inner wall of each Brake Master Cylinder and the outer surface of each piston.
★ If there is any damage in pump or piston, please replace!
•Check main and secondary cups.
★ If the cup is worn, broken, softened (corroded) or swollen, replace the entire piston with the cup.
★ If you find the brake handle/pedal is leaking brake fluid, replace the entire piston with the cup!
•Check the dust cover for damage.
•If the dust cover is damaged, replace it!
•Check whether the piston return spring is damaged.
★ If the return spring is damaged, replace it!
•Check whether the oil outlet hole and the oil inlet hole are blocked.
★If the oil outlet hole is blocked, the Brake Pads will produce resistance to the brake disc. Clean the outlet hole with
compressed air.
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