Perkins 2806A-E18TA Operation And Maintenance Manual page 76

76
Maintenance Section
Air Compressor - Check
Air Compressor - Check
(If Equipped)
Do not disconnect the air line from the air com-
pressor governor without purging the air brake
and the auxiliary air systems. Failure to purge the
air brake and the auxiliary air systems before re-
moving the air compressor and/or the air lines
could cause personal injury.
Illustration 40
Typical example
(1) Pressure relief valve on single cylinder air compressor
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Illustration 41
Typical example
(2) Pressure relief valve on twin cylinder air compressor
If the air compressor pressure relief valve that is
mounted in the air compressor cylinder head is
bypassing compressed air, there is a malfunction
in the air system, possibly ice blockage. Under
g03813903
these conditions, your engine may have insuffi-
cient air for normal brake operation.
Do not operate the engine until the reason for the
air bypass is identified and corrected. Failure to
heed this warning could lead to property damage,
personal injury, or death to the operator or
bystanders.
The function of the pressure relief valve is to bypass
air when there is a malfunction in the system for the
air compressor.
The pressure relief valve for the air compressor
releases air at 1723 kPa (250 psi). If the pressure
relief valve for the air compressor exhausts, all
personnel should be at a safe distance away from the
air compressor. All personnel should also stay clear
of the air compressor when the engine is operating
and the air compressor is exposed.
Consult your Perkins distributor for assistance.
SEBU9074-06
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