Testing Locomotives In Multi-Unit

Front 1

What is the procedure to test locomotive operations in multi-unit?

Back 1

- apply the handbrake

- release the independent brake then apply the independent brake

- make a 150 KPA brake pipe reduction ensuring the brake cylinder warning light illuminates

- test the independent release feature, ensuring the brake cylinder warning light extinguishes

- driver to release auto brake and apply the ind brake

Front 2

What is the procedure to release a sticking 26L brake on a trailing unit with No3 and No4 pipes coupled?

Back 2

If brakes are not releasing on any unit in a multi unit consist when they should, the brake cylinder warning light will remain illuminated.

The driver will make a full equalising brake pipe reduction and then release the locomotive brake using the independent brake valve, prior to releasing the automatic brake.

This will result in reduction of control reservoir pressure on the 26L locomotive with sticking brakes, allowing a complete release.

Front 3

What is the procedure to release a sticking 26L brake on a trailing unit with No3 and No4 pipes not coupled?

Back 3

If brakes are not releasing on any unit in a multi unit consist when they should, the brake cylinder warning light will remain illuminated.

The train must be stopped, and the driver must make a full equalising brake pipe reduction and leave the brake applied.

The driver will then proceed to the 26L Loco on which the brakes are not releasing and ensure the MU2A valve is in LEAD OR DEAD and the independent handle is on the brake valve and is in RELEASE.

The driver must then depress the independent brake valve handle to obtain a complete release of the locomotive brake.

This will reduce control reservoir pressure thus releasing the sticking break.

The driver must then return to leading loco and release the automatic brake. After observing the brake cylinder warning light goes out, proceed.