7-17. ASSEMBLY OF MAIN GEAR OLEO. (Refer to Figure 7-5.)
b. Lubricate the wall of the piston and carefully insert it into the housing being careful not to damage or
dislocate the O- ring in the housing.
c. Ascertain that the bushings are installed in the upper and lower torque links and then install links. At cable
end of each link, install with the use of brake line bracket, bearing washers, bolt, washer, nut and cotter pins.
Install washers (AN960-816L) under the head of the bolt to allow a firm sliding fit between the two links.
d. Slide the scraper and spacer rings into place and secure with the retainer ring in the annular slot in the
bottom of the housing.
underneath the flange of the cylinder head (4).
—NOTE—
On models without the groove for the O-ring, apply Permatex Form-a--
gasket No. 6 Sealant beneath the flange of the cylinder head (4).
f. Install the hydraulic brake line.
g If removed, install the landing gear as described in Paragraph 7-20.
h. Service the oleo strut as given in Oleo Struts, Section II.
i. Actuate the gear several times by hand to be certain it operates freely.
—NOTE—
Links should be loose enough to allow free action of the gear, but also
resist side play. To eliminate side play shim washers 6331 1-03 (.005 )
may be used as required. Maximum side play is.005/.007. For
lubrication of links, refer to Section II.
7-18. REMOVAL OF MAIN LANDING GEAR. (Refer to Figure 7-6)
a. Place the airplane on jacks. (Refer to Jacking, Section II.)
b. Place a drip pan under the main gear to catch spillage.
c. If desired, remove the air from the oleo chamber by depressing the air valve core pin found in the
inspection hole on top of the wing. After the pressure in the oleo chamber has diminished, remove the valve core
pin and attach a small hose to the air valve and drain the fluid by slowly compressing the piston tube. If it is
desirable to extract more fluid from the chamber, remove the filler plug, insert the siphon hose and drain fluid
from the upper area of the housing.
d. Remove the fairing from around the cylinder housing and the access plate located on the bottom of the
wing and to the rear of the housing by removing attaching screws.
e. Unhook the hydraulic brake line inside the wing assembly. This is accessible through the access plate.
Cap the line by use of a threaded cap or wrapping with plastic.
f. Remove the top four bolts by holding them with a slotted screwdriver and turning the nut with the
appropriate wrench. Remove the remaining six by use of a wrench. Carefully remove the gear assembly from
the wing.
PIPER AIRCRAFT
PA-28-161 CADET
AIRPLANE MAINTENANCE MANUAL
Issued: FEBRUARY. 28, 1989
LANDING GEAR AND BRAKE SYSTEM
1I7