Tail Rotor Driveshaft Hanger

BHT-212-CR&O5. Inspect detail parts for cracks bymagnetic particle or fluorescent penetrantmethods as applicable (paragraph 65-7)U)+-.0(BHT-ALL-SPM).(finNOTE,-.0If inspection reveals cracks ordistortion indicative of excessiveloads in any one detail part, entireassembly shall be consideredunserviceable and nonreparable.(OD06. Accomplish Normal Inspection (paragraph65-7).65-7. Normal Inspection.1. Visually inspect all parts for damage orexcessive wear.NOTEWear limits are provided to showrequired fit between mating parts. Itis not intended all dimensions bechecked as a prescribed overhaulprocedure. However, parts exhibitingevidence of wear or physicaldamage shall be checkeddimensionally.NOTEOvertemperature indicator dots ontemperature indicator TEMP-PLATES are of a white or light graycolor and turn black when exposedto an overtemperature condition.Chemical contamination can alsocause the indicating dots to turnblack.0(02.Q-2. Inspect inner coupling (7, figure 65-2) for 5. Inspect outer coupling (8, figure 62-5)acceptable wear patterns (figure 65-3). temp erature ind icator TEMP-PLATES (9) forevid ence of overtemperature indication. If3. Inspect following parts by magnetic overtemperatureindication is noted, performparticle (Code M) or fluorescent penetrant cou pling over temperature inspection as(Code F) (BHT-ALL-SPM), as applicable. follo ws:Demagnetize parts after magnetic inspection.a. Inspect outer coupling cadmium platingfor being discolored (circumferential tan orFigure, NomenclatureCodelight brown band) or blistered. If cadmiumIndex No.plate discoloration or blistering is found,replace outer coupling and inner coupling.(now0000000^a='¢;,65-2, 4 Bolt M65-2, 6 Retainer plate F65-2, 7 Inner coupling M65-2, 8 Outer coupling M65-2, 11 Shaft M65-2, 14 Hanger (see note) F/M65-2, 15 Rear coupling MNOTEPerform fluorescent penetrantinspection on magnesium hangers(14) and magnetic particle inspectionon steel hangers (14).4. Inspect parts dimensionally and replaceparts which exceed inspection limits (figure65-4).E.L-,(OD.(!)3.7a000-000b. Inspect gear teeth of outer couplingand inner coupling for being discolored(brown or blue) in the normally bright contactpatterns. If discoloration is found, replaceouter coupling and inner coupling.c. Inspect outer coupling and innercoupling under 5x to 10x magnification forteeth exhibiting signs. of metal smearing ortearing in the contact patterns. If smearing ortearing is found replace outer coupling andinner coupling.d. Inspect grease from couplings for beingvery viscous (thick) and having a strongpungent odor. If grease is found to be viscous(thick) and having a strong pungent odor,replace outer coupling and inner coupling.65-00-00Page 8 Rev. 3