Tail Rotor Driveshaft Hanger

BHT-212-CR&0SEAL (13) PARTIALLY SEATEDINTERNALSPLINESINNER COUPLING (10) USEDAS BACK-UP TO PUSH LIPOF SEAL 0 3) UPOUTER COUPLING 01)INSTALLEDINVERTED ON INNERCOUPLINGSEAL 03) FULLY SEATEDDETAIL A212-R-65-17-2212-040-003-1715. Inspect couplings (10 and 11).a))QUAr0,(I)0.0D0Figure 65-17. Intermediate gearbox output quill (sheet 2)a. Inspect for chipped, pitted, cracked, orexcessively worn teeth.3-0b. Check wear patterns to criteria shownon figure 65-18.a-+0)Y=0031(Q0C. Inspect surface of inner couplings thatare contacted by seals (14, figure 65-17) forexcessive wear, nicks, and scratches. Agroove worn by seal is acceptable to aminimum diameter of 1.587 inch (40.3098mm) provided depth does not exceed 0.002inch (0.0508 mm). If groove is smooth, partmay be reworked.6. Inspect following parts by magneticparticle (Code M) or fluorescent penetrant(Code F) (BHT-ALL-SPM), as applicable.Demagnetize parts after magnetic inspection.Figure,Index No.Nomenclature+.,c_0Code65-17, 10 Inner coupling M65-17, 11 Outer coupling M65-17, 8 Bolt M65-17, 24 Gear M65-17, 6 Retainer F65-17, 2 Plate F65-17, 15 Nut F65-17, 18 Sleeve F7. Check bearings (17 and 22, figure 65-17)for smooth operation and indications ofexcessive wear. Inspect bearing races forroughness.8. Inspect bearing liners for scoring andsecurity of mounting in sleeve (28).((DD(OD-G:0C'-' 0_0O(OD0 o09. Inspect bearings for evidence of spalling,scoring, pitting, brinelling, flaking, corrosionon rolling elements, and cracked or brokenretainers (figure 65-14).000wa. Minor nicks, cuts, or scratches areacceptable provided they are too small to befelt with a probe having an end radius of0.030 inch (0.762 mm), and provided totalaffected area does not exceed 10% of contactarea at any point.0b. Minor circumferential scoring isacceptable on rollers and races provided itcannot be felt with a probe having an endradius of 0.030 inch (0.762 mm) and providedaffected area does not exceed 10% of contactarea at any point.(3D65-00-00Page 46 Rev. 4