NOTE: For engines with an in-line fuel injection pump, an
internal leak path may allow air to enter the fuel
system. If an internal pump leak is suspected,
remove the pump and have a pressure test
performed by an authorized repair station.
AIR FILTER RESTRICTION INDICATOR
Air Filter Restriction Indicator
6.2 kPa (62 mbar) (25 in. water)
Must Come On At Vacuum
JT05652 (1/8 F NPT x 1/8 F NPT x 1/8 M NPT) Tee
JT03246 (1/4 F NPT x 1/4 F NPT) (Parker No. 0202-4-4) Coupler
SERVICE EQUIPMENT AND TOOLS
(1/8 in.) Barbed Fitting
(1/4 in.) Barbed Fitting
0--15 kPa (0--150 mbar) (0--60 in. water) Vacuum Gauge
1. Remove air restriction indicator switch (A).
2. Install parts as shown.
3. Start engine and slowly cover the air cleaner inlet with
a piece of paper or cardboard.
4. Air filter restriction indicator (light) must come on.
Air Filter Restriction Indicator Must Come On At--Specification
Vacuum .................................................. 6.2 kPa (62 mbar) (25 in. water)
5. If reading is not within specifications, install a new