Heavy Vehicle Inspection Manual - Transport

Such modifications could also affect compliance with exhaust
emission requirements.
b) The noise level from the vehicle exceeds the figure in
the following table:
Table 11 1 : Noise Limits for Diesel Powered Heavy Vehicles
Table 11-1 : Noise Limits for Diesel Powered Heavy Vehicles
Gross Vehicle
Mass (kg)
Height above ground of
end of exhaust pipe (mm)
3 500 or less 1 500 or more
3 500 or less less than 1500
Manufacture
period
Noise
level
dB(A)
Before 1/7/80 101
On or after 1/7/80
and before 1/7/83 98
On or after 1/7/83 95
Before 1/7/80 105
more than
3 500, but not
more than
12 000
more than
3 500, but not
more than
12 000
more than
12 000
more than
12 000
1 500 or more
less than 1500
1 500 or more
less than 1500
On or after 1/7/80
and before 1/7/83 102
On or after 1/7/83 99
Before 1/7/80 103
On or after 1/7/80
and before 1/7/83 100
On or after 1/7/83 97
Before 1/7/80 107
On or after 1/7/80
and before 1/7/83 104
On or after 1/7/83 101
Before 1/7/80 105
On or after 1/7/80
and before 1/7/83 102
On or after 1/7/83 99
Before 1/7/80 109
On or after 1/7/80
and before 1/7/83 106
On or after 1/7/83 103
11.3. Check engine and drive-line
Version 4 – 1 May 2009 Page 45
Reasons for rejection
a) Engine and drive line mounts or drive line components are loose, cracked, broken or are missing components
or fasteners.
• A bus fitted with a transmission incorporating any longitudinal drive shafts is not fitted with a device that
prevents the front of the drive shaft from contacting the road in the event of becoming detached from its
normal position.
• If dual tyres are not fitted to a single rear axle on a bus that is equipped to seat more than 15 persons,
including the driver, but is not an articulated or all-wheel drive bus.
b) Any universal joint or securing bolts are loose or missing.
c) Constant velocity joints, universal joints, support bearings, splines, and other drive line components are not
secure, free of excessive wear, back lash or seizure which could cause component failure.
d) Engine and transmission controls are inoperative.
e) A vehicle fitted with automatic transmission is capable of being started when the transmission control is in a
position to drive the vehicle.
48 Heavy Vehicle Inspection Manual Version 6, November 2010