Piper Cherokee LANCE, Service Manual

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PIPER CHEROKEE SIX / LANCE SERVICE MANUAL
03/27/08 II - HANDLING AND SERVICING
1C13
2-58. FILLING BRAKE CYLINDER RESERVOIR.
The brake cylinder reservoir should be filled to the level marked on reservoir, with the fluid specified in
Table II-I. The reservoir, located on the left side of the firewall in the engine compartment, should be
checked at every 50-hour inspection and replenished as necessary. No adjustment of the brakes is
necessary, though they should be checked periodically per instructions given in Section VI.
2-59. DRAINING BRAKE SYSTEM.
To drain the brake system, connect a hose to tho bleeder fitting on the bottom of the cylinder and place
the other end of the line in a suitable container. Open the bleeder and slowly pump the hand brake lever
and the desired brake pedal until fluid ceases to flow. To drain the wheel brake unit, disconnect the line
at the bottom of the unit and allow fluid to flow into a suitable container. To clean the brake system,
flush with denatured alcohol.
2-60. TIRES
2-61. SERVICING TIRES. The tires should be maintained at the pressure specified in Table II-I. When
checking tire pressure, examine the tires for wear, cuts, bruises and slippage. Also ascertain that the tires,
tubes, and wheels are properly balanced when installed. Align the index mark on the tire with the index
mark on the tube.
2-62. TIRE BALANCE
Proper balancing is critical for the life of aircraft tires. If a new tire is balanced upon installation it will
usually remain balanced for the life of the tire without having any shimmy or flat spots.
a. Tire Balancer
An inexpensive balancing fixture that will balance almost any light aircraft tire can be made from
the materials shown in Figure 2-7a.
1. Chamfer top edges of -3 sides, leaving 1/16 inch flat on top of the inboard edge. Rivet -2 tee’s
to -3 sides using AN 470-AD5 rivets, with 2 inch spacing, and using AN 426-AD5 rivets ( 2
inch center to center ) to secure -2 tee’s to -1 base. If tee extrusion is unavailable, heavy angle
extrusion could be used. -3 sides must be vertical.
2. The -4 axle must slide through the -8 pipe, the -5 nuts are made by reaming the existing
threads in the AN 365-624 nuts with an R drill, then tapping them with a 1/8-27 pipe tap.
3. The -6 spacers were made from 1/2 inch aluminum tubing, the two lengths of spacers are
suitable for balancing most any aircraft wheel.
4. The -7 bushings may be made from one inch phenolic or aluminum using a 1-1/2 inch hole
saw to cut out the smaller bushing and a 1-3/4 hole saw to cut out the larger. By inserting a 1/4
inch long threaded bolt through the pilot hole and securing with a washer and nut, a drill press
and file may be used to make the off-set on the bushing. The turned-down part should just slide
inside the bearing race and then ream the pilot hole to slide over the -8 pipe threads.
5. The -8 pipe was made from a piece of 1/8 inch black pipe and threaded with a 1/8-27 pipe die,
this will be thread 3 inches in from each end of the pipe.