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Exhaust System
Excessive back pressures to the engine exhaust can considerably reduce both engine performance and life. It is
therefore important that exhaust systems should be the proper diameter and be as short as possible within the
minimum amount of bends. Refer to Installation & Operating Data in Technical Catalog C133941 (see Page 5)
for exhaust data. Also refer to table below for maximum exhaust restrictions.
Air Filter Restriction (Inches of Water)
C18H0-UFAD50, C18H0-UFAD58, C18H0-UFAD68,
C18H0-UFAD70, C18H0-UFAD78
C18H0-UFAD10, C18H0-UFAD18, C18H0-UFAD20,
C18H0-UFAD28, C18H0-UFAD30, C18H0-UFAD38,
C18H0-UFAD40, C18H0-UFAD48, C18H0-UFAD78,
C18H0-UFAC10, C18H0-UFAC18, C18H0-UFAC20,
C18H0-UFAC28
Installation of Exhaust System should consist of the following:
Personnel protection from hot surfaces
Adequate supports to prevent strain on the engine exhaust outlet and minimize vibration.
Protection against entry of water and other foreign matter.
While the engine is running inspect exhaust pipe outlet outside of the pump room itself for environmental
hazards such as excessive smoke conditions. The following could be used as a guide for general engine
operating conditions.
Blue Smoke – Possible engine oil consumption.
White Smoke – Possibility of water in cylinders, water in fuel or internal engine problem.
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