TROUBLE SHOOTING

3.7 TROUBLE SHOOTING

3.8.2

Thoroughly clean the complete compressor

package assembly in accordance with the instructions in

3.7.1 Table 3 lists troubles that may occur in the

paragraph 3.2. Drain the lubricating oil from the engine

compressor package assembly, the probable causes,

and compressor crankcases. Drain the engine fuel tank,

and suggested remedies.

fuel filter and fuel lines. Tie prominent warning tags on

the compressor and engine stating the units require

3.8 PREPARATION FOR STORAGE OR SHIPMENT

lubrication before being placed in operation. Close and

latch all access doors. Inflate the tires to the specified

3.8.1 Start the engine in accordance with instructions in

pressure.

paragraph 2.6 and allow an approximately 5 minute

warm-up period. With the engine running at idle speed,

3.8.3 The compressor package assembly should be

remove the silencer cover and intake filter from the

stored inside a weatherproof shelter, protected from

compressor first stage cylinder head. Slowly inject

dust, moisture, and all abrasive or corrosive liquids and

approximately one ounce of aircraft instrument

gases. When stored outdoors, the compressor package

lubricating oil into the first stage air intake. Press the

assembly should be protected from the elements with a

stop button to stop the engine within two seconds after

weatherproof cover.

the last of the oil is injected. Replace the intake filter

and silencer cover on the compressor first stage

cylinder. Tape or plug the silencer cover intake port.

TABLE 3. TROUBLE SHOOTING

TROUBLE

PROBABLE CAUSE

REMEDY

Insufficient air flow,

Air leaks.

Check all connecting tubes and fit-

low outlet pressure,

tings. Tighten connections and/or

or excessive pump-up

replace defective parts.

time.

Pressure relief valve(s) damaged or

Check valves for escaping air. Re-

defective (open).

move, test, and repair or replace,

as necessary.

Leakage from pneumatic dump valve

due to:

a. Damaged or dirty parts.

a. Disassemble, clean, and re-

place parts, as necessary.

b. Defective push valve.

b. Check, replace, if necessary.

Rupture discs in second or third stage

Install new rupture disc(s).

cylinders, filter and separator, or

safety fitting leaking or blown out.

Shut-off valve to receiver partially

Open valve.

closed.

Line filter element clogged.

Replace element.

Restricted air inlet to compressor

Check. Remove restriction. Clean

first stage cylinder.

or replace intake filter.

Compressor not operating at rated

Engine governor not properly adjusted

speed.

See or engine operating erratically. Part II.

Damaged or worn air compressor.

Remove air compressor. Repair or replace.

Air compressor uses

Oil leaks.

Inspect for leakage. Repair or re-

excessive lubricating

place parts as necessary

oil.

Excessive piston -to-cylinder-wall

Remove, test, and repair or replace,

clearance in air compressor.

as necessary.