ENGINE 3-99
PAIR (AIR SUPPLY) SYSTEM INSPECTION
HOSES AND PIPES
• Inspect the hoses and pipes for wear or damage.
• Inspect that the hoses and pipes are securely connected.
PAIR VALVE
• Remove the PAIR valve. ($3-98)
• Inspect the PAIR valve body for damage.
PAIR VALVE
• Inspect that air flows through the PAIR valve air inlet port A to
the air outlet parts B.
• If air does not flow out, replace the PAIR valve with a new one.
• Connect the vacuum pump gauge to the vacuum port of the
PAIR valve as shown in the photograph.
• Apply negative pressure slowly to the PAIR valve and inspect
the air flow.
• If air does not flow out within the specification, the PAIR valve
is in normal condition.
• If the PAIR valve does not function within the specification, re-
place the PAIR valve with a new one.
# Negative pressure range: 44 – 65.3 kPa
(330 – 490 mmHg)
" 09917-47010: Vacuum pump gauge
!
Use a hand operated vacuum pump to prevent the PAIR
valve damage.
REED VAVLE
• Remove the PAIR valve cover.
• Inspect the reed valve for the carbon deposit.
• If the carbon deposit is found in the reed valve, replace the
PAIR valve with a new one.
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