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Medha Servo Drives Pvt Ltd.
MAS 696 Operator’s Manual
10.7 Coupling Locomotive Together
Use the following procedure when coupling Locomotives together for Multiple
Unit operation:
1. Couple and stretch Locomotive to ensure the couplers are locked
properly.
2. Install 27 conductor electrical control cable between Locomotives.
3. Perform ground, Engine room and Engine inspections outlined in
preceding pages.
4. Set cab controls for trailing Unit operation. Remove Reverser from all
controllers to Lock controls.
5. Connect Air Brake hoses between Locomotives.
6. Open required Air hose cutout cocks on each Locomotive.
7. Using Lead Locomotive Air Brake Cab Control Unit (CCU), make an
Automatic brake application to determine if brakes are applied on
each Locomotive. Release the Automatic application, then make
sure the brakes on each locomotive are released.
8. Follow the same procedure to check an independent brake
application. Also, release an Automatic brake service application by
pulling up the independent brake handle bail-release ring. Inspect all
brakes in the tandem to verify they are released.
10.8 Dynamic Braking For Locomotive in Tandem
The Dynamic Brake Handle operates the Dynamic Brake Rheostat. The
Locomotive Computer uses the Voltage level signal produced by the
Rheostat to control Dynamic Braking effort. The Rheostat Voltage level
appears on a train lined wire that controls the dynamic braking effort of all
Locomotives in a tandem that are equipped with dynamic braking. The total
Braking effort of a multi-unit tandem can become quite high. Observe
Railway Rules Regarding Multiple Unit Dynamic Braking.
10.9 Engine on Train (Coupling Locomotive to
Train)
Be careful when coupling Locomotive to a Train as taken when coupling
Locomotives together.
After coupling, perform the following checks:
1. Make sure that couplers are locked by stretching the connection.
2. Connect the Air Brake hoses.