Tail Rotor Driveshaft Hanger

B HT-212-CR&0ACCEPTABLE WEAR PATTERN ON PINION(TOUCHING TOE)VIEW DzACCEPTABLE WEAR PATTERN ON GEARVIEW ENOTES6. Pattern Profile: The pattern must be positioned on the tooth in a profile direction such that the patternextends over the top of the pinion and is 0.031 to 0.063 inch (0.787 to 1.600 mm) from the top of thegear (views A, B, D, E, F, G, H and 1). A pattern which does not extend over the top of the pinion ortouches the top of the gear shall be rejected. A bright line occurring at the top of the pinion or in theflank of the gear is also cause for rejection.(0A.0..0.-4°CID(Dm..-7.Unacceptable Defects: In addition to pattern size and location, examine the drive face of all gear teethfor the following defects which are not acceptable if they can be felt with a scribe having a 0.002 inch(0.051 mm) spherical point.h. Grinding flats or barber polinga . Non-cleanup(evidenced by diagonal streaksb.Grinding scratchesin the wear pattern)c . Pittingi.d CorrosionScuffing.e Cuts j Scoring.k.f. NicksInclusionsg. Dents3.00 '"' c=)IACCEPTABLE WEAR PATTERN ON PINIONVIEW FzACCEPTABLE WEAR PATTERN ON GEAR(0.156 INCH (3.962 mm) FROM TOE)VIEW GWIC.ACCEPTABLE WEAR PATTERN ON PINIONVIEW HACCEPTABLE WEAR PATTERN ON GEAR(TOUCHING HEEL AND 0.156 INCH (3.962 mm) FROM TOE)VIEW 1Figure 65-23. Gear and pinion wear pattern (sheet 2)x:1212-R-65-23-265-00-00Rev.4 Page 63