CHAPTER 79
PAGE 9
MAINTENANCE MANUAL EXTRA 330LX
PAGE DATE: 1. March 2011
79-30-00 INDICATING
Oil pressure and oil temperature are sensed on the EXTRA
330LX engine and are indicated to the pilot in command.
Trouble Shooting
Trouble Possible Cause Remedy
No oil pressure indication Sensor defective Replace sensor.
Gauge defective Replace gauge.
Oil pressure low Engine oil pressure low Check engine oil pressure
with calibrated equipment.
Orifice engine fitting Clean fitting.
blocked
Sense line leakage Replace sense line.
Oil temperature high Sensor or cable defective Replace sensor.
Repair cable defect.
Gauge defective Replace gauge.
Incorrect engine oil Perform engine oil change.
79-30-10 Oil Pressure
The oil pressure gauge is located in the rear instrument
panel. The gauge receives its data electrically from a pres-
sure sensor located on the aft side of the firewall (refer to
figure 4). The pressure sensor (1) is connected to a fitting
(2) on the cold side of the firewall. A sense (wet) line (3)
connects the bulkhead fitting to the reducer fitting (4) at the
engine.
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