5-45 100-Hour / Annual Maintenance and Inspection [11 of 25 Pages]
MAIN ROTOR GEARBOX COMPARTMENT (continued)
Main Rotor Push-Pull Tubes:
Examine accessible portion with inspection light and mirror. Inspect condition per
Section 5-32. Verify no nicks, scratches, chafing, dents, cracks or corrosion. Inspect
rod end bearings per Section 5-33; verify rod ends are centered and palnut and jam
nut are tight. Check witness holes for proper thread engagement. Verify proper
installation, security, and operating clearance.
Tail Rotor Push-Pull Tube & Forward Bellcrank:
Examine accessible portion with inspection light and mirror. Inspect condition per
Section 5-32. Verify no nicks, scratches, chafing, dents, cracks, or corrosion. Inspect
rod end bearings per Section 5-33; verify rod ends are centered and palnut and jam
nut are tight. Check witness holes for proper thread engagement. Inspect bellcrank
and bellcrank sheet metal mounting for nicks, scratches, dents, cracks, or corrosion.
Inspect spherical bearings per Section 5-33. Verify proper installation, security, and
operating clearance.
Hydraulic Reservoir:
Inspect condition. Verify no significant leakage. Replace filter and packing at intervals
specified in Section 5-20. Drain and flush hydraulic system per Section 12-33 if oil
has turned dark or emits bad odor. Add fluid as required. Verify security.
CAUTION
Cleanliness of hydraulic fluid is vital to proper system operation.
Service hydraulic system with clean fluid from sealed containers.
Verify funnels, tubing, and other service tooling is free of
contaminants.
Hydraulic Servos:
Inspect condition. Inspect rod ends per Section 5-33. Verify approximately 0.040 inch
total free play at servo valve input. Verify no significant servo leakage. Clean servo
input rod end/clevis area with no-residue, non-alcoholic solvent as required. Verify
no obvious defects and security of scissors at upper clevis of servos. Verify proper
installation and clearance from surrounding structure through full control travel.
CAUTION
Use LPS PreSolve to clean hydraulic parts. Do not use alcohol.
Hydraulic Hoses, Lines, & Fittings:
Inspect condition. Verify no leakage, chafing, or obvious damage to hydraulic lines.
Verify integrity of connections. Verify fluid line clearance to installed equipment and
surrounding structure and sufficient fluid hose slack available through full control
travel. Verify proper installation and security.
Hydraulic Pump:
Inspect condition. Inspect Telatemp per Section 5-35. Verify no significant leakage.
Verify proper installation and security.
SEP 2012 R66 Maintenance Manual Chapter 5 Inspection Schedule Page 5.23
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