Exhaust system
78
Backpressure
The exhaust system will produce a certain resistance
to the exhaust gas flow. This resistance or backpres-
sure must be kept within specified limits. Excessive
backpressure can cause damage and will lead to:
• Loss of power output
• Poor fuel economy
• High exhaust temperature
These conditions produce overheating and excessive
smoke from the installation, and reduce the service
life of the valves and turbocharger.
Allowed backpressure in exhaust line at rated rpm, kPa (psi)
TAMD31
TAMD41
TAMD42WJ
KAMD43
KAMD44
KAMD300
Acceptable
Not acceptable
0 5 10 15 20 23 25 30 35
(0) (0.7) (1.5) (2.2) (2.9) (3.3) (3.6) (4.4) (5.1)
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