Piper Cherokee LANCE Service Manual Download

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PIPER CHEROKEE SIX / LANCE SERVICE MANUAL

II - HANDLING AND SERVICING

03/27/08

1C12

Fully compress and extend the strut thus drawing fluid from the fluid container and expelling
air from the strut chamber. By watching the fluid pass through the plastic hose, it can be
determined when the strut is full and no air is present in the chamber.

When air bubbles cease to flow through the hose, compress the strut fully and remove the hose
from the valve stem.

With the strut compressed, remove the filler plug to determine that the fluid level is visible up
to the bottom of the filler plug hole.

Reinstall the core in the filler plug and apply thread lubricant (See Thread Lubricant, Oleo
Strut, Air Valve - Kopr-Kote.) to the threads of the filler plug and install the plug in the top of
the strut housing. Torque the plug to 45 foot-pounds.

Method 2:

Remove the filler plug from the top of the nose gear strut housing or at the top inboard side of
the main gear housing.

Raise the strut piston tube until it is fully compressed.

Pour fluid from a clean container through the filler opening until it reaches the bottom of the
filler plug hole. (Air pressure type oil container may be helpful.)

Install the filler plug finger tight and extend and compress the strut two or three times to
remove air from the housing.

Remove the filler plug, raise the strut to full compression and fill with fluid if needed.

Apply thread lubricant (See Thread Lubricant, Oleo Strut, Air Valve - Kopr-Kote.) to the
threads of the filler plug. Reinstall the filler plug and torque to 45 foot-pounds.

With the airplane still on jacks, compress and extend the gear strut several times to ascertain that the
strut actuates freely. The weight of the gear fork and wheel should extend the strut.

Clean off overflow of fluid and inflate the strut as described in Paragraph 2-55.

Check that fluid is not leaking around the strut piston at the bottom of the housing.

2-55. INFLATING OLEO STRUTS.

After making certain that an oleo strut has sufficient fluid, attach a strut pump to the air valve and inflate
the oleo strut. The strut should be inflated until the correct inches of piston is exposed with normal static
load (empty weight of airplane plus full fuel and oil) on the gears. (Refer to Paragraph 2-51.) Rock the
airplane several times to ascertain that the gear settles back to the correct strut position. (If a strut pump
is not available, raise the airplane and use line pressure from a high pressure air system to inflate the
strut. Lower the airplane and while rocking it, let air from the valve to bring the strut down to the proper
extension.) Before capping the valve, check for valve core leakage.

2-56. BRAKE SYSTEM.

2-57. SERVICING BRAKE SYSTEM.

The brake system incorporates a hydraulic fluid reservoir through which the brake system is periodically
serviced. Fluid is drawn from the reservoir by the brake cylinders to maintain the volume of fluid
required for maximum braking efficiency. Spongy brake pedal action is often an indication that the brake
fluid reservoir is running low on fluid. Instructions for filling the reservoir are given in Paragraph 2-58.
When found necessary to accomplish repairs to any of the brake system components, or to bleed the
system, these instructions may be found in Section VI.

Piper Cherokee LANCE, Service Manual

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