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Rolls--Royce250--C30R,U OPERATION AND MAINTENANCE

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72--00--00Page 607

Jan 15/02

0.COPYRIGHT 1990, 2009 Rolls--Royce Corporation

Table 603

100 Hour Inspection

INITIAL 100 HOUR INSPECTIONREFERENCESECTION REMARKS

1. Inspect the engine for obviousloose bolts, broken or loose con-nections, security of mounting ac-cessories, and broken or missingsafeties. Check accessible areasfor obvious damage and evidenceof fuel and oil leakage. Check B--nuts for presence and alignmentof torque stripes. B--nuts withmissing torque stripes must beloosened and retightened beforeapplication of new torque stripes.

2. Inspect the compressor impellerleading edges for damage.

72--30--00,PARA 4.B.

3. Clean the compressor, as re-quired, with a chemical washsolution if dirt buildup is evident.

72--30--00,PARA 5.B.

4. Without disassembly, inspect theturbine and exhaust collector sup-ports for condition of weldedjoints, cracks and buckling.

72--50--00,PARA 5.K.and PARA7.B.

5. Carefully inspect fuel system forevidence of leakage. Check fit-tings for torque and security andtubing for conditions that couldcontribute to leakage (loose,chafed, cracked, bent, ordented). Check and correct ob-vious tube--to--fitting misalign-ment. Check fuel control forproper rigging; check lever forfreedom of travel; ensure that le-ver contacts both stops, and thatlinkage bolts are free of exces-

sive wear.

73--00--00PARA 2.A.,Fuel LeakageInspection

If there is no evidence of leakage,further action is not required. Ifevidence of leakage is found, iso-late and repair leak.

6. Inspect the engine mounts forcondition and security.

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Dec 1/04.COPYRIGHT 1990, 2009 Rolls --Royce Corporation

Table 603 (cont)


7. Detailed visual inspection of outercombustion case using a brightlight (flashlight or equivalent), in-spect all weld areas for cracks.

72--40--00,PARA 2.B.(1)

8. Inspect electrical harness forloose, chafed, frayed, or brokenwires and loose connectors.

CAUTION: NORMAL ENGINES USE A MINIMAL AMOUNT OF OIL. HOWEVER,ANY SUDDEN INCREASE IN OIL CONSUMPTION IS INDICATIVE OFOIL SYSTEM PROBLEMS AND MUST BE CORRECTED.

9. Check oil supply level. 72--00--00,Table 101,Trouble--shooting.

If the engine has been idle formore than 15 minutes, motor theengine for 30 seconds to scav-enge any oil that may havedrained into the gearbox from the

oil tank. Failure to completelyscavenge the oil from the gearboxwill cause a false indication ofhigh oil consumption.

NOTE: Check oil supply level within 15 minutes of engine shutdown.

10. Inspect for extension of impend-ing oil filter bypass indicator. Ifindicator is extended, clean oil fil-ter.

72--60--00,PARA 1.C.

It is possible for the impending oilfilter bypass indicator to extendduring a start of a cold soakedengine, giving an erroneous in-dication of a dirty oil filter. If theimpending filter bypass indicatoris extended, run the engine untilthe oil is at operating temperatureand push the indicator button in.If the button remains in through-out the normal speed range of theengine, the filter does not requirecleaning.

CAUTION: WHEN THERE IS EVIDENCE THAT THE FUEL FILTER HAS BEEN BYPASSED, THE GAS PRODUCER FUEL CONTROL INLET FILTER ANDTHE FUEL NOZZLE FILTER, MUST BE CLEANED. (REFER TO SPE-CIAL INSPECTIONS, 72--20--00, TABLE 608) IF ANY CONTAMI-NATION IS FOUND IN THE FUEL NOZZLE FILTER, THIS WILL RE-QUIRE THAT THE FUEL CONTROL BE SENT TO AN AUTHORIZEDREPAIR FACILITY FOR INTERNAL CLEANING. REFERENCE MUSTALSO BE MADE TO THE AIRFRAME MAINTENANCE MANUAL FORFUEL SYSTEM MAINTENANCE FOLLOWING FUEL CONTAMI-NATION.

11. Inspect for extension of impend-ing fuel filter bypass indicator.

73--10--05,PARA 2.

If indicator is extended, replacefuel filter.

73--20--02,PARA 5.A.

Inspect the fuel filter in the fuelcontrol and in the fuel nozzle.Ground run engine to assureproper operation of control sys-tem.

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Dec 1/04

.COPYRIGHT 1990, 2009 Rolls--Royce Corporation

Table 603 (cont)


11.A Clean and inspect the fuel nozzle. 73--10--03 Install fuel nozzle with proper

number of spacers.

12. Record component changes,inspections, and compliance withtechnical instructions as required.Report engine difficulties toRolls--Royce and/or AuthorizedMaintenance Center (AMC) onModel 250 Report, Form 8117--1(Rev. 5--94) as required.

13. Without disassembly, check thecompressor discharge air tubes.

Inspect for air leaks, dents,cracks, chafing, and properclamping.

72--40--00,Table 203.

14. Inspect compressor scroll forcracks. Pay particular attention towelded areas.

15. Clean the burner drain valve. 72--40--00,PARA 3.

Ensure that the airframeoverboard is clear. Refer toaircraft manual for maintenanceprocedures.

16. Inspect the anti--icing andoverspeed solenoid valves forloose, chafed, frayed or brokenwires, loose connections andsecurity of attachment.

17. Inspect the horizontal and verticalfirewall shields for cracks.

72--50--00,PARA 5.J.

NOTE: Continued sheet metal ortube cracking may be anindication of excessive engine,engine accessory or airframevibration.

18. Check fuel control for properrigging.

73--20--02,PARA 2.C.

19. On power and accessory gearboxcover, check the applied torqueon all turbine and exhaustcollector support--to--gearboxretaining nuts.

72--50--00,PARA 1.B.

Torque must be 120--150 lb in.(14--17 N.m). Compliance with250 CEB--72--3017 cancels thisperiodic inspection requirement.

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Table 603 (cont)


20. Remove, clean, operationally test,and reinstall the magnetic drainplugs:

a. Inspect the locking pinsand flanged inserts for wear.

72--00--00,PARA 8.E.

Torque 60--80 lb in.(6.8--9.0 N.m).No cracks are acceptable. Checkeach chip detector separately.

21. Inspect ignition lead for burning,chafing or cracking of conduit.Also, check for loose connectorsand/or broken lockwire.

74--20--02,PARA 2.

Perform operational check ofignitor.

74--20--01,PARA 2.B.

22. Remove, inspect, clean and

reinstall the oil filter.

72--60--00,

PARA 1.C.23. Measure and record power

turbine support pressure oilnozzle flow from scavenge oilstrut. Record and retain flowrecord.

Flow

Compare with previous flow. Anylarge deviation could indicatecarbon buildup.

72--50--00,PARA 5.E.

While motoring N1 to 16--18%,the minimum flow is 90 cc in 15seconds.

24. Drain the oil system and refill.

Oil changed at:

150 hours300 hours600 hours_____________

72--00--00,

PARA 8.D.,EngineServicing.

150 hours or 6 months max. time

limit.

NOTE: With an STC approvedexternal scavenge filter, the oilchange interval is 300 hours orsix months.

NOTE: The hour and calendarlimit can be extended to 600hours or 12 months if an externaloil filter of a type that has a validSTC (Supplemental TypeCertificate) is installed on the

engine and if there is use of anapproved high thermal stability oil(Third Generation).

NOTE: Refer to 250 CSL--3126,Recommended Sequence,Engine Oil Change for additionalinstructions.

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Dec 1/08


Table 603 (cont)


25. Service oil filter 72--60--00,

PARA 1.C.,

If excessive carbon is found in the

filter, inspect the scavenge andpressure oil system. Refer to72--50--00, PARA 5.E., 5.F.,5.G., 5.H., 6.A.

26. Remove, inspect and reinstall theturbine pressure oil system checkvalve.

72--60--00PARA 2.H.

NOTE: Check Valve P/N23074872 and subsequent partnumbers are not applicable to thisinspection (these valves areconsidered ON CONDITION).

27. Inspect Pc filter for properclamping and security

73--20--03

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Table 604

300 Hour Inspection

INITIAL 300 HOUR INSPECTION

REFERENCE

SECTION REMARKS

In addition to the 100 hour inspectionitems, perform the following:

1. Inspect compressor mount forcracks.

72--00--00,PARA 1.A.(3), Engine In-spection/Check.

2. Clean power turbine supportscavenge oil strut.

72--50--00,PARA 5.G.

3. Clean external sump. 72--50--00,PARA 5.G.

4. Clean No. 1 bearing oil pressurereducer.

72--30--00,PARA 2.A.

Follow procedures in compressorfront bearing and/or oil sealreplacement.

5. Clean pressure oil fitting screenassembly.

72--50--00,PARA 5.G.

CAUTION: EXTREME CARE SHOULD BE EXERCISED TO PREVENT TWISTINGOF OIL NOZZLE DURING REMOVAL. DO NOT ATTEMPT TOSTRAIGHTEN OR REUSE IF TWISTED.

6. Clean power turbine pressure oilnozzle.

72--50--00,PARA 5.G.

7. Remove and disassemble fuelnozzle. Clean and inspect fuelnozzle filter assembly. Assembleand install fuel nozzle.

73--10--03

8. Remove, inspect and reinstall theturbine pressure oil check valve.

72--60--00,PARA 2.H.

NOTE: Check Valve P/N23074872 and subsequent partnumbers are not applicable to thisinspection (these valves areconsidered ON CONDITION).

9. Inspect the engine rear mount forsecurity and excessive bearingwear.

72--00--00,PARA 1.A.(4), Engine--Inspection/Check.

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Dec 1/08


Table 604 (cont)

INITIAL REMARKSREFERENCESECTION300 HOUR INSPECTION

10. Remove, clean, inspect and rein-stall the Pc filter.73--20--03PARA 2. and3.

If engine performance deterio-rates, Pc filter cleaning intervalmay have to be reduced.

WARNING: PROPER TIGHTENING OF ENGINE TUBING CONNECTION IS CRITI--CAL TO FLIGHT SAFETY. CORRECT TORQUE VALUES MUST BEUSED AT ALL TIMES. EXCESSIVE TORQUE ON PNEUMATIC SEN--SING SYSTEM CONNECTIONS RESULTS IN CRACKING OF THEFLARE CAUSING AN AIR LEAK WHICH CAN CAUSE FLAME OUT,POWER LOSS OR OVERSPEED.

11. On power and accessory gearboxcover, check the applied torque

on all turbine and exhaust sup-port--to--gearbox retaining nuts.

72--50--00,para 1.B.

Torque must be 120--150 lb in.(14--17 Nm).

12. Inspect the thermocouple assem-bly (TOT/MGT).

77--20--01,Para 2.B.

Table 605

600 Hour Inspection


1. Perform scavenge oil filter im-pending bypass function check,per Facet Service Bulletin No.111089.1 (ref. Rolls--Royce CSL3116) for all aircraft equipped withan external scavenge filter sys-tem.

Table 606

1500 Hour Inspection

INITIAL 1500 HOUR INSPECTION

REFERENCE

SECTION REMARKS

1. Fuel control filter inspection. 73--20--02PARA 5.A.

2. Fuel nozzle filter inspection. 73--10--03PARA 3.B.

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Table 607

750/2000 Hour Inspection

INITIAL 750 HOUR INSPECTION(250--C30U Engine)2000 HOUR INSPECTION(250--C30R, --C30R/1 ENGINES)

REFERENCE

SECTION REMARKS

The following inspections are requiredevery 750 hours time since last inspec-tion on 250--C30U engine and every2000 hours since last inspection on250--C30R and --C30R/1 engines.

1. Remove and replace the lowpressure fuel filter element. Be-

fore discarding filter, inspect forsigns of contaminants. If any arefound, inspect the entire fuel sys-tem and clean if necessary.

73--10--05

Inspect the combustion liner. 72--40--00,PARA 1.C.

2. Inspect the outer combustioncase for cracks using Leak--Tekand/or dye penetrant.

72--40--00,PARA 2.B.(2),(3), and (4).

3. Inspect the compressor dischargeair tubes.

72--40--00,PARA 4.C.

4. Remove and replace the low

pressure fuel filter element.

73--10--05,

PARA 2.5. Inspect the spur adapter gear-

shaft, compressor rotor splinedadapter and associated impellerbore.

72--30--00,PARA 4.B.(2)4.C. and4.E.

6. Inspect the turbine to compressorcoupling, turbine splined adapter,power turbine inner shaft and tur-bine shaft--to--pinion gear cou-pling.

72--50--00,PARA 5.A.and 5.B.

Turbine to compressor coupling ispart of the turbine assembly.

NOTE: Anytime the compressor is removed from the engine, inspect the N1 shaftingjoints by doing Items 5 and 6 above.

NOTE: Anytime the turbine is removed from the engine, inspect the N1 shaftingjoints by doing Item 6 above.

NOTE: Inspection intervals shall not exceed 750 hours (250--C30U), 2000 hours(250--C30R, --C30R/1).

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