An unwanted automatic application of Brake on a running Train resulting in unintended stoppage of the train at en-route before destination.
How to attend Brake Binding
- Bogie Mounted Brake Cylinder
Bogie Mounted Brake Cylinder:
- Close the brake cylinder isolating cock of the affected trolley. If both trolleys are affected, close both isolating cocks.
- Ensure that the brake releases and work the train.
- If the brake still, not releases, gently tap the piston head with a hammer till the piston completely goes in and work the train.
- If the brake still, not releases, remove the flexible hose connection on one side or damage the hosepipe of the affected trolley. See that the brake releases and work the train.
- If the brake still, not releases, work out the brake lever connecting pin between floating lever and Brake Cylinder and work the train.
- Air Leak on DV, Procedure for Bye passing a coach
Air Leak on DV & Procedure for Bye passing a coach:
Procedure for Bye passing a coach:
- Close the FP and BP of adjacent coaches on either end of the affected coach. Wait for air to be drained. Uncouple the hoses and couple the BP_FP bye-pass coupling between BP of the adjacent coach and FP of the affected coach on both ends.
- Open the BP cocks of adjacent coaches on either ends and FP cocks of the affected coach of both the ends.
- Now BP air will bypass brake system of the affected coach and reach the brake system of the rear portion and work with single pipe system. Isolate brake cylinders of the affected coach manually and isolate FP & AR
- Loco Change, ICC Pulling, Emergency Brake Application, Special instructions for trouble free working
Loco Change, ICC Pulling, Emergency Brake Application, Special instructions for trouble-free working:
Before attaching loco, let out air from BP S& FP in loco for few seconds to vent out the moisture and minimize brake binding.
- Release entire coaches of the train manually and then charge formation with the loco attached.
- For any further assistance, C&W staff may be called through control at the next halt station.
- Reset the alarm chain apparatus.
- If the leak cannot be arrested, close the isolating cock of the alarm apparatus and work the train.
Emergency Brake Application:
Wait for 1.5 minutes in case of twin type system and 3 minutes in case of single pipe system after emergency brake application. This is necessary to allow the release of the brake of the full formation. Ensure that the Airflow indicator reading is stable and reached the same level as it was before starting of the train from the originating point.
Special instructions for trouble-free working:
- Ensure hand brakes are in the released condition in SLRs.
- Ensure venting of air from BP and FP before attaching the loco air pipes.
- Ensure release of the formation when loco change or reversal.
- Ensure air drier working.
- Frequent resetting of the A9 valve to be avoided.
- Ensure the availability of two bye pass palm ends in Loco and SLR.
- Ensure no unwanted objects in the FP and BP hose pipes while changing.