GTZ type design «Tandem»
3, 7, 20 - Pistons; 5 - Retaining ring; 8 - Locking plate; 9 - Plugs; 10 - Reservoir; 22 - Housing; 27 - Guide pin
Disassembly
1. Lightly press your finger (3) and remove the cylindrical pin (27) using pliers.
2. Remove retaining ring (5) and remove the piston (3) together with the secondary seal from the housing (22).
3. Remove the floating piston with pliers from the body (22)..
4. Wipe the housing clean and check the internal surfaces of the housing for damage.
5. Wipe all parts with new brake fluid.
Assembly
1. Disconnect the sleeve (040) from the sleeve (041).
2. Remove the secondary seal and piston from the sleeve (041).
3. Fix the body (22) holes down.
4. Lubricate the housing bore with brake fluid.
5. Insert bushing (040) into the hole and press the floating piston (20) until it stops with a screwdriver. When installing the piston, make sure that the guide groove (arrow) installed vertically.
6. Insert cylindrical pin and remove bushing (040).
7. Fix the brake cylinder holes up.
8. Insert the secondary seal into the body (22) and compress it.
9. Fix the piston (7), insert the lock plate (8) and secure it with a retaining ring (5), follow the correct fit in the groove of the housing (22) retaining ring (5).
10. Lubricate the plugs (9) brake fluid and press them into the housing (22). Install the tank (10) with one tube per body (22), rotate 180°and then fit the second tube to the body (22).