Page 229 - CTS - Mechanic Diesel - TP

MECHANIC DIESEL - CITS

MODULE 14: Alternative Fuel System

EXERCISE 14.1: Identify the CNG Kit components and

find out their location

Objectives

At the end of this exercise you shall be able to
• identify the CNG Kit Components in the vehicle and locate their place in vehicle
• trace the layout of CNG system.
Requirements

Tools/Instruments
• Mechanic Tool kit - 1 No. • Steel Horses - as reqd.
Equipments/Machines Materials

• A CNG vehicle Two post lift/four post lift • Cotton waste, waste cotton cloth - as reqd.
• Wheel chokes - as reqd.

Procedure

1 Place a CNG vehicle on plain surface

2 Apply hand brake
3 Put wheel chokes on the wheels
4 Open the boot lid
5 Identify the CNG cylinder (1) its location and its position on boot space

6 Identify CNG cylinder locking clamps (2) and checkwhether it is securely locked
7 Identify the vapour bag (3) and cylinder shut off valve (4)
8 Part the vehicle on hoist/lift
9 Raise the vehicle on lift
10 Identify the fuel lock off valve (6) and manual shut off valve (7)
11 Trace the CNG fuel pipe line and check the clamps fitted with chassis frame

12 Down the lift
13 Open the engine hood
14 Identify the vibration loop on CNG fuel line (8)
15 Identify the quarter turn shut off valve if fitted (9)

16 Identify the pressure gauge (10)
17 Identify the check valve (11) and its location
18 Identify the fuel fill receptacle (12) and its location

Note: In some vehicles fuel fill receptacle may come on vehicle back side conventional fuel filler
location.

19 Identify the pressure regulator (13) and its location

20 Identify and locate the fuel filter (14) if fitted

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