DS2007 MRK Disc Brake Caliper - Spring Applied, Pneumatically Released Nominal dimensions given For caliper dimensions see DS2000 182 dia New pads 173 Worn pads 181 New pads 263.5 Worn pads 271.5 Weight (caliper and thruster) - 10.0kg (thruster only) - 3.5kg Total volume of air at full retraction is 0.95l Maximum working pressure 7 bar 3 Braking Torque - Nm ( Full Rate) Maximum Braking Force - kN Minimum Pressure for Full Retraction - bar The ratings shown on the above graph are based on fully bedded and conditioned brake pads with nominal friction coefficient μ = 0.4. For bedding-in and conditioning procedures see Publication M1060. Braking Force is defined as the Tangential Force acting on the brake disc at the Effective Disc Radius. Braking Torque (Nm) = Braking Force (N) x Effective Disc Radius (m) where Effective Disc Radius = Actual Disc Radius -0.03. Twiflex Disc Brakes must be used with Twiflex asbestos free brake pads. The use of any other brake pads will invalidate the warranty. Twiflex Limited reserves the right to modify or change the design without prior notice.

MRK Disc Brake Caliper - Spring Applied, Pneumatically Released 123 Caliper Arms AVAILABLE SPARES Item Component Part No. 1 Diaphragm Kit 7902804 2 Self Adjusting Repair Kit 7902805 Spring Kit 7902800 Thruster Part Numbers Full Rate 7200654 2/3rd Rate 7200770 1/3rd 6mm 7200576 Rate Should it become necessary to replace a diaphragm, Remove from caliper and ensure air supply is disconnected. Unscrew and remove push rod. Remove the M5 bolts and the rear cap of the thruster. Remove the worn diaphragm; clean-up the contacting surfaces and re-assemble with the new diaphragm and M5 bolts in position...