This range of pneumatically operated brakes uses dry and filtered compressed air at pressures up to 7 bar.
Pneumatic brakes require a control valve which may be operated either manually, or by pneumatic or electrical signal.
Should it become necessary to replace a diaphragm, Remove from caliper and ensure air supply is disconnected. Unscrewand remove push rod. Remove the M5 bolts and the rear cap of the thruster. Remove the worn diaphragm; clean-up thecontacting surfaces and re-assemble with the new diaphragm and M5 bolts in position (Tightening Torque 5.7Nm).

Thruster Fitment
1. Make sure the thruster rod is extended i.e. it is not pressurised.
2. Take hold of the thruster and turn the push rod via the hex portion  clockwise until it stops rotating: so a ‘clicking’ can be heard from the  ratchet . Do this by hand,do not apply heavy force to push the  rod once it stops turning.
3. Offer thruster to caliper making sure that both lock nuts are  removed before placing hex section of push rod through caliper arm.
4. Pull caliper arms apart so that the pads are hard against the disc.
5. Fit lock nuts to thruster body loosely and unwind push rod until the gap between the body and the arm is 6mm. Make sure that the hex section of the push rod is within the slot of the other arm.
6. Tighten first lock nut to 50 - 60Nm then tighten the second nut against  the first.
7. Fit tension spring to arms.

AVAILABLE SPARES
Item Component Part No.
1 Diaphragm Kit 7902804 TWIFLEX
2 Self Adjusting Repair Kit 7902805 TWIFLEX
 Spring Kit 7902800 TWIFLEX
Thruster Part Numbers
Full Rate 7200654 TWIFLEX
2/3rd Rate 7200770 TWIFLEX

1/3rd Rate 7200576 TWIFLEX

Brake THRUST,DISK,14.3KN,196Dx295L,MXS 9.6,SELF ADJUSTING,TWIFLEX MXS 9.6 , 14.3KN

Brake THRUST,DISK,2.6KNx264Lx182Wx135H, MSK, 165MM, TWIFLEX

Clutch/Brake Accessory THRUSTER,182Wx237Lx123Tx182D,MXK25,FULL RATE 7200654/TWIFLEX (MRK-DS2007, with Thruster (Part No: 7200654) 100% led, 1165NM, 182Dx237Lx202W)