Piper Comanche PA-24 Service Manual page 342

PWERCO~CHESER~CE~AL
6-32a. Inspection of Main
Gear
Side
Brace
Unks and
Rod
End BearIngs. (Refer to Figures 6-Sb
and 6-8c)
a. Side Brace Links. To detennine the serviceability of these parts requires the inspection of the
threads for wear, by detennining the pitch diameter of the threads. There are two methods as follows:
1. Thread Ring Gauge Method (See Figure 6-Sc). The following is the suggested method for
checking thread wear:
(a) Procure standard thread ring gauges for the thread sizes specified in Figure 6-Sc.
(2) Using the instructions provided by the thread ring gauge manufacturer, check thread
wear and determine pitch diameter. Figure 6-Sc shows a typical three-step process.
2. Three Wire Method.
(a) See U.S. Department of Commerce Screw Thread Standard H-2S Handbook or any good
machinist's handbook.
(b) Follow the procedure given and calculate the pitch diameter based on wire size used.
3. If the link
is worn in excess of the tolerances given in Figure 6-Sc, it must be replaced.
b. Rod End Bearings.
1. This check requires the use of a NO-GO thread plug gauge (refer to table included in Figure
6-8b for the specific size gauge to use). This gauge can be purchased from any good tool supplier.
2. If the NO-GO gauge can be screwed into the bearing, the bearing is worn larger than the
tolerances given in the table with Figure 6-Sb, and must be replaced.
NOTE
The NO-GO gauge should not fit a serviceable bearing.
6-33. installation of Main Landing Gear. (Refer to Figure 6-9.)
NOTE
When assembling components of the landing gear. lubricate bearings,
bushings and friction surfaces with proper lubricant as described in Section 11.
a. Insert a gear support bearing (43 and 48) in each support fitting (11 and IS) and secure with snap
rings (45).
b. The gear housing may be installed in the wheel well of the wing by the following procedure:
1. Place a spacer washer (17), 0.035. PIN 19513-10. or original number of washers and then the
forward support fitting (IS) on the forward support arm of the strut housing.
LANDING GEAR AND BRAKES
Revised: 8115198
1124