165/166 Turbo Pass Out

Question 1

The candidate should be able to describe the basic operation of the hydrostatic system.

Answer 1

A reservoir tank supplies oil to two hydrostatic pumps, one pumps oil to the hydrostatic motor, which drives the radiator fan and one which pumps oil to the hydrostatic motor, which drives the alternator.

Question 2

The candidate should describe the basic principles of the air production system.

Answer 2

Air is drawn by the compressor which then passes it to the engine stop cylinder and throttle air actuator. Then on to the main reservoir tank. Pressure is controlled by a compressor governor, which dumps any excess air to atmosphere via the purge valve. Upon leaving the main reservoir tank air is passed to the distribution system via M.R.P.I.C.

Question 3

The candidate should describe what parts of the Turbo require air to function

Answer 3

Doors, suspension, engine, gearbox, horns, windscreen wipers/washers, uncoupler, parking brakes, toilets and sanders

Question 4

The candidate should describe the maximum speed of 165/166 units and the potential of over-speeding

Answer 4

165/0 = 75mph
165/1 = 90mph
166 = 90mph
Unit will suffer damage to transmission

Question 5

The candidate should describe what happens if the Train Control Circuit Breaker trips in the leading cab and the effects on the train and the risks if unable to reset.

Answer 5

An emergency brake application, flashing passcomm, door interlock light red, parking brake out, CSR radio out.
If unable to reset, that cab out of use. Operate parking brake bypass and isolate 3 C.I.C’s on unit.
Assistance is required in front. Passengers should be moved to assisting unit and driver should ride in rear cab of failed unit to operate parking brake/EPBAC (main air dump). In leading cab of assisting unit, isolate passcomm, traction interlock and operate EBS. Maximum speed is 5mph.

Question 6

Candidate to describe the purpose of the EBS and the risks in operating this equipment and when it is necessary.

Answer 6

The EBS gives an emergency brake supply when it is necessary to isolate the normal brake systems.
This is only for emergency use and the unit must be out of service immediately line is cleared.

Question 7

The candidate should describe what the effect would be of the Train Circuit Control Breaker tripping in the rear cab

Answer 7

Emergency brake application, flashing passcomm, flashing general fault. Door interlock light red.
If unable to reset – operate parking brake bypass and isolate B.C.I.C. on ear cab. Passengers moved to another coach and lock coach out of use. A competent person should ride in rear cab to operate parking brake/EPBAC (main air dump). In leading cab of assisting unit, isolate passcomm, traction interlock and operate EBS. Maximum speed is 5mph.

Question 8

The candidate should describe why an engine might revert to idling other than as a result of normal shutting off power and what actions to take.

Answer 8

High coolant temperature or high transmission temperature.

Unit declared a failure unless berthed and given sufficient time to cool.

Question 9

The candidate should describe what happens if the Local Control Circuit Breaker trips in the leading cab

Answer 9

Engine will stop with no engine stop indication. No effect except loss of power.
Unit to be taken out of service if unable to reset.

Question 10

The candidate should describe the purpose of the door traction interlock and what actions (and risk) to take on isolation

Answer 10

The traction interlock ensures all doors are closed and secure prior to power being available. Isolated traction interlock may have a potential for doors not to be closed and power to be taken.

Question 11

The candidate should describe what they do if a general fault light is flashing on the desk

Answer 11

Track Circuit Actuator, parking brake or transmission (generator MCB on some 166 units)

Question 12

The candidate should describe what happens when the main air reservoir gauge is falling, causing the brakes to apply. How would you deal with the leak?

Answer 12

Close M.R.P.I.C. And stop engine leak should die down and stop leave M.R.P.I.C. Isolated. Re-start engine and continue journey.

Question 13

Candidate to describe what action to take if the earth circuit breaker trips.

Answer 13

Reset only once if it trips again. Enter in repair book.

Question 14

Candidate to describe what action to take if the O.T.M.R. fault indicator goes to red, what is wrong?

Answer 14

Inform Signaller, OTMR not recording.

Question 15

Candidate to describe what action to take if an air suspension bag deflates what should you do, and what is the maximum permitted speed following isolation?

Answer 15

Isolate A.S.R.I.C. Drain all three surge tanks. 45 mph with passengers
Normal speed E.C.S.

Question 16

Candidate to describe what action to take if the pass comm is pulled what indications would you receive in the cab and how do you reset?

Answer 16

Buzzer sounding and flashing pass comm light, press the yellow button near the DSD.

Question 17

You get an emergency brake application. Flashing pass comm. Door interlock light-red. General fault light flashing red, what’s happened?

Answer 17

The couple button had been pressed with no unit attached.

Question 18

Candidate to describe the maximum number of cars that can be formed together and why?

Answer 18

Twelve, due to the fact that the electrical feed from the front cab will not reach more than twelve coaches.

Question 19

Candidate to describe what action to take if you were unable to get traction interlock and you have seen that a pair of doors had not shut correctly what would you do?

Answer 19

Check that chrome handle hadn’t been operated. Check door for obstructions. Push doors closed

Question 20

Candidate to state how you would isolate the D.S.D. and what you are required to do after you have isolated it? What are the risks with running without DSD?

Answer 20

Use master key. Isolate vigilance then D.S.D. Inform signaller.
The DSD will not operate in the event of the driver becoming incapacitated.

Question 21

Candidate to state what indications would you have if the TCA had failed on a vehicle and how it would affect the train.

Answer 21

Flashing general fault light in leading cab. Cantrail light and T.C.A. Fault light lit on affected car. MCB can be reset up to 3 times. Break glass bar to isolated T.C.A. Then inform signaller if affected car is leading or trailing vehicle.

Question 22

The candidate should name the isolation cocks and their purpose that are situated under the flap on the non-driving side of the cab

Answer 22

Cab door I.C. Uncoupler I.C. Windscreen wiper washer I.C. Warning horn I.C. Parking brake application cock and parking brake by-pass valve cock.

Question 23

Candidate to describe what action to take if the engine stop light illuminated

Answer 23

Attempt to re-start engine at first opportunity (neutral) if engine will
Not restart further investigation required i.e. check coolant, engine oil.

Question 24

Candidate to describe what action to take if the fire alarm sounds

Answer 24

Cantrail light illuminated on affected car – check fire is out. If not use manual fire handle and/or hand extinguisher once fire is out isolate
engine and isolate fire system on affected car move passengers to other cars. Lock and isolate doors and if no-one available to ride in vehicle, stop frequently to ensure fire has not restarted.

Question 25

Candidate to describe what action to take if the DOO radio fails and what are the risks?

Answer 25

Inform signaller at first suitable opportunity if detained at a signal use S.P.T. only if safe to do so. Unable to be contacted in emergency, or make calls in emergency

Question 26

Candidate to describe what would prevent an engine from starting

Answer 26

Low coolant. Stop button stuck in (local or cab). Fire system activated isolated or low fire bottle pressure. micro switch operated on charging/shore supply sockets. Cab not switched in. Flat batteries. Engine isolated. Fuel starvation (engine turns but will not fire). Low oil pressure (engine turns, fires but stops after approx. 7 seconds)

Question 27

Candidate to describe what will apply the brakes when the train is moving – no MCB’S tripped?

Answer 27

Loss of door interlock (egress operated). Pass comm pulled and yellow boot button not held down. DSD ‘dropped’. Failure to reset vigilance failure to cancel AWS. Low main air. Low brake res air. Red buttons/brake handle operated in either cab. Coupler becoming loose/uncoupled.

Question 28

Candidate to describe what happens when the brake control circuit breaker trips on the leading vehicle and the associated risks?

Answer 28

Emergency brake application. Flashing pass comm. Flashing general fault parking brake light red. Cantrail light lit on affected car. If unable to reset – unable to drive from that car. Operate parking brake by-pass and isolate B.C.I.C. And move passengers to other car and lock car out of use. Assistance required in front in leading cab of assistance isolate pass comm and operate E.B.S. No brakes on isolated coach

Question 29

Candidate to describe what happens if the brake control circuit breaker tripped on the rear vehicle and the associated risks?

Answer 29

Emergency brake application. Flashing pass comm. Flashing general fault. Parking brake light red in rear cab. Cantrail light lit on affected car. If unable to reset – operate parking brake by-pass and isolate B.C.I.C. and move passengers to other car and lock car out of use. Competent person required in rear cab to operate parking brake in emergency. Max speed 5mph No brakes on isolated coach

Question 30

Candidate to describe what happens when the train is stood in a platform with the doors released. Before the doors are closed, you notice that on one of the vehicles the doors close and lock. What is the likely cause?

Answer 30

Someone has pressed the black button on the end of the coach or the door control MCB has tripped on that vehicle.

Question 31

Candidate to describe what happens if a passenger came up to your cab and told you that they could not get into a vehicle, what would be the cause?

Answer 31

Door supply MCB tripped or doors have been isolated.

Question 32

Candidate to describe what indications would be received in the driving cab if the generator circuit breaker had tripped

Answer 32

Battery charge indicator would go red. Clicking noise behind panel to rear of the driver’s seat. General fault light red, which may flash on some units. Generator circuit breaker in the tripped position. Unit only viable as long as battery power present, out of service as soon as possible.

Question 33

Candidate to describe what indications would be received in the driving cab if the generator circuit breaker had tripped - As above but from another cab

Answer 33

Clicking heard behind the panel to the rear of the driver’s seat. General fault light red, which may flash on some units.

Question 34

Candidate to describe what if, whilst walking through a turbo unit the internal doors on a vehicle do not open, what is the probable cause?

Answer 34

Generator circuit breaker tripped, interior door MCB tripped or low air pressure

Question 35

Candidate to describe what happens if an engine turns but will not fire. What is the cause

Answer 35

Fuel Starvation

Question 36

Candidate to describe what if you have isolated the AWS what must you do and how could this affect the running of the train and the risks this presents.

Answer 36

Inform the signaller and run at 40mph maximum during fog or falling snow. Also make an entry in the repair book. AWS not active, therefore increased risk of SPAD

Question 37

Candidate to describe at a platform you press the door close button but are unable to regain interlock. All doors are closed and the cantrail lights are out. What would you do to locate the fault and what action would you take to get the train moving again?

Answer 37

Check the cantrail lights both sides of the unit, examine all door control MCB’s if unable to reset, isolate the doors, move passengers to another vehicle and isolate traction interlock

Question 38

Candidate to describe what will cause a cantrail light to illuminate

Answer 38

Loss of door / traction interlock. TCA fault or fire alarm activated

Question 39

Candidate to describe where would you find an emergency tail lamp bracket

Answer 39

Behind the flap at each end of the vehicle on the either side

Question 40

Candidate to describe if the brakes failed to respond in any position of the brake handle including pressing the emergency buttons, what action would be taken

Answer 40

Apply the parking brake application cock under the desk and then open the cupboard and apply the EPBAC.

Question 41

Candidate to describe on which side of the vehicle is the “Xmas” tree located

Answer 41

DA’s side.

Question 42

Candidate to describe if after boarding a turbo and setting up the cab ready for departure you discover that the brakes will not release and there are no fault lights showing red, what could the cause be

Answer 42

Cab buttons – brake handle – low main air – low brake supply air – micro switches on intermediate couplers or micro switches on charger sockets (engine will also stop)

Question 43

Candidate to describe if you had a main reservoir pipe burst between vehicles, how would you deal with it

Answer 43

Close the MRPCC’s either side of the leak and unit out of service as soon as possible

Question 44

Candidate to describe how would you isolate the fire system on the middle car of a three car unit

Answer 44

Inside the saloon open the cupboard to the left of the gangway door at no 1 end (equivalent of the driving cab end) and insert a master key in the fire alarm isolation switch keyhole. Turn the key 90 degrees and then withdraw it. A red light will illuminate.

Question 45

Candidate to describe the method when going to open cupboards in the middle vehicle where the circuit breakers are located, what must you do to ensure your safety?

Answer 45

Trip the interior door circuit breaker first to prevent electric shocks.

Question 46

Name the parts that make up the drive, starting from the engine

Answer 46

Engine – fluid flywheel – cardan shaft – gearbox – cardan shaft – master final drive – cardan shaft – slave final drive.

Question 47

Candidate to name what drives the compressor

Answer 47

The engine.

Question 48

A blue light is illuminated in the bottom left-hand corner of the destination indication box, what does this indicate?

Answer 48

That a safety system is isolated, check repair book for reason and inform Control of the units status before continuing.

Question 49

Candidate to describe the actions to take when brought to a stand due to an air leak.

Answer 49

Upon coming to a stand place the direction selector into neutral and observe the main air gauge. If the pressure rises the leak is on a gearbox – select forward arrange for the DSD to be depressed, if this is not possible isolate vigilance and DSD walk around unit to locate leaking gearbox. When located isolate engine and GBIC.

Question 50

Candidate to describe the two main functions of the WSP and describe its basic operation

Answer 50

To reduce wheel slide by rapidly applying and releasing the brakes and to reduce wheel spin by reducing the engine revs until wheels stop spinning.

Question 51

Candidate to describe the function of the auxiliary heater

Answer 51

to top up the coolant temperature if it returns to the engine too cool after passing around system and to pre-heat the engine and saloon in cold weather

Question 52

Candidate to describe when would a driver have to isolate a pair of saloon heater isolating cocks and why

Answer 52

When a leak is noticed on the floor of the saloon, this then prevents further loss of coolant which will stop the engine if too much leaks out.

Question 53

Candidate to describe the meaning of the two toilet retention tank indicator lights and any action necessary

Answer 53

Bottom light lit – 50% full. Top light lit – 80% full. Lock toilet out of use and inform Thames control

Question 54

Candidate to describe the action after operating the warning horn, it will not stop sounding, what action would be taken

Answer 54

If there is an air leak, Isolate HIC, inform the signaller and travel at 20mph until unit can be taken out of service.

Question 55

Candidate to describe where is the TPWS train stop override located and when it can be used

Answer 55

On the panel above local fault indicator lights. Used as a temporary override where required to pass signal at danger with authority.

Question 56

Candidate to describe how would you make a full isolation the TPWS system in the event of a fault occurring and what action to be taken.

Answer 56

Isolate the AWS/TPWS system by using a spare engine key. Inform signaller immediately. Train not to enter Paddington area.

Question 57

Candidate to describe how would you be aware of a TPWS initiated brake application

Answer 57

The brake gauge needle would rise and the red brake demand light will flash

Question 58

Candidate to describe when may you receive a brake application via the TPWS system

Answer 58

Driving outside of the TPWS limits triggering the over speed or a SPAD at a signal fitted with TPWS – must contact the signaller

Question 59

Candidate to describe when authorised to pass a signal at danger, equipped with TPWS what action is required

Answer 59

The train stop override button must be pressed and the signal passed within 20 seconds

Question 60

Candidate should be able to demonstrate action in leaf fall/non-leaf fall where auto sanders are defective

Answer 60

Driver should evaluate problem in non-leaf fall period, if difficulty experienced in stopping unit should be taken out of service. In leaf fall periods, driver should get unit out of service.

Question 61

Candidate should describe the process when he/she considers the unit to have poor brakes.

Answer 61

• First contact the signaller and then FGW Control earliest opportunity • Drive at a reduced speed to maintain full control of the train If brake is so poor it is considered unsafe another unit must be attached before any movement. Train will be taken out of service at first suitable location and passengers detrained. Report of poor brakes questionnaire must be completed. Prior to being taken out of service, where safe to do so, carry out a “step1” brake application and reduce speed of train from 70mph to 15mph . This is to enable Technicians to analyse data from OTMR.

Question 62

Candidate should describe the requirement when a unit has defective brakes on front or rear vehicle.

Answer 62

• Train must be driven from leading vehicle compartment. • Proceed at no more than 5mph to clear line. • If being assisted passengers must transferred to another car . driver of failed unit must ride in the affected car to operate the Parking brake in an emergency. Isolate EBS AND PASSCOM in the Leading Cab and operate PBBC AND BCIC on affected car

Question 63

Candidate should describe the requirement when a unit has defective brakes on middle vehicle or where brake is not applying correctly.

Answer 63

* Running at reduce speed and braking earlier in accordance with available braking capability. * Only one in five allowed to be isolated when service starts up

Question 64

Candidate should demonstrate the action required where the cab buzzer is defective.

Answer 64

Driver should be aware that the unit should come out of service at the first available point, except where running as ECS.

Question 65

Candidate to state the action taken where two units divide in service.

Answer 65

Driver should be clear that permission to re-couple must be sought from the Maintenance and proceed at 20mph only.

Question 66

Candidate to state the action taken where a unit divides in service.

Answer 66

Driver must state that the unit is not to be moved until authorised by the fleet function

Question 67

Candidate to describe the actions taken when marker lights fail.

Answer 67

Lamp on front – 20mph Portable headlight – 75mph Tai light – line speed Out of service at next available point

Question 68

Candidate to demonstrate action taken when hustle alarm inoperative

Answer 68

One door, isolate and lock. | All train, announcements to inform doors are closing.

Question 69

Candidate to demonstrate action taken when on train fire equipment missing/damaged

Answer 69

Lock coach out of use. Where emergency equipment is missing, train must not be in passenger service.

Question 70

Candidate to demonstrate action taken when public address is out of use.

Answer 70

Should be able to demonstrate difference between conductor operated and DOO. One coach on DOO, lock out of use. All service, train withdrawn.

Question 71

Candidate should demonstrate action taken when unit reported as riding rough

Answer 71

Driver should consult with signaller/Maintenance before proceeding

Question 72

Candidate should demonstrate action taken when GSM/CSR out of use

Answer 72

Driver should advise signaller and obtain permission to proceed to get unit out of service

Question 73

Candidate should demonstrate action taken when speedometer out of action

Answer 73

Driver to reduce speed to ensure all restrictions are adhered too.

Question 74

Candidate should demonstrate action taken when tail light out of action

Answer 74

Driver to use Bardic lamp/ Torch/portable lamp

Question 75

Candidate should demonstrate action taken when unit has been vandalised

Answer 75

Coach locked out of use, or if full train, out of service at first available point.

Question 76

Candidate should demonstrate action taken when experiencing wheel flats

Answer 76

Driver to make judgement and report to signaller.

Question 77

Candidate should demonstrate action taken when windscreen broken or wiper defective

Answer 77

If vision is affected, the driver should judge severity. If vision affected, unit out of service at suitable point

Question 78

Candidate should demonstrate action taken when passenger windows broken

Answer 78

Both panes, coach out of use, if cannot be achieved, unit out of service. Outer pane only, must be removed before proceeding.

Question 79

Candidate to describe restrictions on door isolations

Answer 79

Must not have two doors the same side of the unit isolated.