11
FOR VEHICLES FITTED WITH CNG FUEL SYSTEM
74L90-74E
PERIODIC MAINTENANCE SCHEDULE
Kms (1 x 1000)
Month
1
1
5
6
10
12
20
24
30
36
40
48
50
60
60
72
70
84
80
96
90
108
100
120
Spark plug (CNG) Replace every 50,000 km or 48 months whichever comes first
All Joints (Gas leakage) I I I I I I I I I I I I
Coolant Hoses (Leakage, Damage) I I I I I I I I I I I I
All Fasteners Torque values T T T T T T T T T T T T
CNG low pressure filter
cartridge with O-Ring
- - - R - R - R - R - R
CNG cylinder leak testing and
certification
Every 3 years from the date of initial testing by govt. approved testing agency
CNG filler receptacle O-Ring Replace every 4 years or 300,000 km, whichever comes earlier
T ........Tighten to Specified Torque
I ........ Inspect and correct or replace if necessary
R ....... Replace
NOTE:
• This table includes services as scheduled up to 100,000 km mileage. Beyond 100,000 km, carry out the same services at the same
intervals respectively.
• For other maintenance details refer “Inspection & Maintenance” section in main Owner’s Manual.
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