Piper COMANCHE PA-24-180 Service Manual page 284

PIPER COMANCHE SERVICE MANUAL
F. Cable Fittings
Check swaged terminal reference marks for an indication of cable slippage within fitting. Inspect
fitting assembly for distortion and/or broken strands at the terminal. Assure that all bearings and
swivel fittings (bolted or pinned) pivot freely to prevent binding and subsequent failure. Check
tumbuckles for proper thread exposure and broken or missing safety wires/clips.
G. Pulleys
Inspect pulleys for roughness, sharp edges, and presence of foreign material embedded in the
grooves. Examine pulley bearings to assure proper lubrication, smooth rotation, freedom from flat
spots, dirt, and paint spray. Periodically rotate pulleys, which turn through a small arc, to provide a
new bearing surface for the cable. Maintain pulley alignment to prevent the cable from riding on
flanges and chafing against guards, covers, or adjacent structure. Check all pulley brackets and
guards for damage, alignment, and security.
H. Pulley Wear Patterns
Various cable system malfunctions may be detected by analyzing pulley conditions. These include
such discrepancies as too much tension, misalignment, pulley bearing problems, and size
mismatches between cables and pulleys. Examples of these conditions are shown in Figure 27-4.
EXCESSIVE CABLE WEAR
FROZEN BEARING
NORMAL CONDITION
Figure 4. Pulley Wear Patterns
APPENDIX NO. 1
Added: 8/15/98
1L20