DT6 - 165 - Paperwork

Question 1

What is the hydrostatic system used to drive on the class 165s?

Answer 1

Radiator fan

Question 2

What is run on the start battery?

Answer 2

• starter motor
• remote supply
• brake control
• AWS/TPWS/WSP
• P.A / Radio
• Local/Train Control
• External Doors
• OTMR

Question 3

What is run on the aux. battery

Answer 3

• Main lights
• Emergency lights
• Heating Control
• Saloon doors
• Toilet
• PIS
• Aux. heater

Question 4

Explain the power train on a 165

Answer 4

• Engine powers the alternator from the free end
• from the fly wheel end a cardan shaft goes to the Voith gearbox
• the gearbox then has a cardan shaft that powers the master final drive
• a cardan shaft then goes from the master final drive to the slave final drive

Question 5

Name the transmission and it’s 3 major components

Answer 5

Voith gearbox:
1. torque converter
2. fluid coupling
3. sliding (dog) gear

Question 6

Give a description of the 165 engine

Answer 6

• Perkins 2000
• 6 cylinder
• inline diesel engine
• w/ turbocharger up to 350bhp
• max rpm 2150

Question 7

How do you identify wheel one and the rest of the wheels on a coach

Answer 7

1. Wheel one has a white/yellow arrow pointing to it (usually North End, DA side)
2. goes down that side to 4 and then 5-8 up other side.
3. each axel adds to 9

Question 8

How many isolations are in the driving cab?

Answer 8

1. Horn IC
2. Uncoupler IC
3. Cab Door IC
4. Parking Brake Applied Cock
5. Parking Brake Bypass Cock
6. Windscreen Washer/Wiper IC
7. Emergency Parking Brake Application Cock

Question 9

Explain CRCLs defensive driving policy including what happens if WSP activiates

Answer 9

• 15/20 or 10/20 in LRA
• in LRA brake earlier and lighter
• if WSP activation put PBC into BS3 unless red at end of platform where you put in emergency

Question 10

How does the hydrostatic system work?

Answer 10

1. pump attached to engine pumps oil around a loop
2. temperature probe senses engine oil temp.
3. when oil reaches max temp, valve forces hydrostatic system oil to power a fan
4. fan cools radiator which cools water
5. cooled water enters water cooler which cools the oil

Question 11

Components of the hydrostatic system

Answer 11

• Engine
• Hydrostatic pump
• Control valve
• Reservoir
• Radiator fan
• Control unit

Question 12

Name the two sides of the suspension

Answer 12

1. Primary: rubber blocks
2. Secondary: air bags

Question 13

How does the variable load valve work?

Answer 13

Adjusts brake pressures based on weight of passengers to ensure consistent braking performance

Question 14

How do the levelling valves work?

Answer 14

Adjusts airbag pressures to ensure that train carriage remains in gauge and at correct height above railhead.

Question 15

What on train wire 4 can initiate an emergency brake application

Answer 15

• AWS/TPWS
• DSD/Vigilance
• Passcom/Egress
• Low Main Res. Governor
• Emergency Parking Brake AC
• PBC at EB
• Emergency Plunger
• Tripcock
• Brake MCB
• Coupler Microswitch

Question 16

What does DMOSL, DMOS and MOS stand for?

Answer 16

• Driving Motor Open Standard Lavatory
• Driving Motor Open Standard
• Motor Open Standard

Question 17

Explain how the brake system works?

Answer 17

• PBC is set to a brake step.
• This sends signal to the brake relays which fill the brake cylinders with the set air pressures
• The air comes from the brake supply reservoir which is fed by the main res.
• it is an ‘energise to release’ system, ie if it loses power the brakes apply.

Question 18

How is the alternator driven?

Answer 18

• By the engine through a cardan shaft

Question 19

What does the alternator power?

Answer 19

• produces 450v AC
• goes through a rectifier
• 400/450 powers the Air Con.
• 50/450 converted to DC through rectifier
• 28v DC for battery charging and powering train