SERVICE TABLE OF LIMITS
PART 1 DIRECT DRIVE ENGINES
SECTIONII CYLINDERS
Ref. Ref. Chart Nomenclature Dimensions Clearances Mfr. Mfr. New Old Min. Serv. Min. Serv. & Max. & Max. Max. Max.
615 527 A-B-D Finished I.D. Exhaust Valve .4040 Guide .4050
Al-G-J Finished I.D. Exhaust Valve .4370
Guide .4380
Finished I.D. Exhaust Valve .4375 Guide .4385
G-J-S-T-BD-BE Finished I.D. Exhaust Valve .4985
Guide (ParallelValveHeads) .4995
S1-S2-S3-S5-S6-Finished I.D. Exhaust Valve .4995
T2-T3-AF Guide (Angle ValveHeads) .5005
S7-S9-S10 Finished I.D. Exhaust Valve
Guide (Angle ValveHeads -.5000
Helicopter) .5010
1/2 inch diameter exhaust valves may have exhaust valve guides that are .003 in. over the maximum insidediameterlimit, anytime up to 300 hours of service. After 300 hours of service, inside diameter of exhaust valve
guide may incre .001 in.
ase .001 in. during each 100 hours of operation up to the recommended overhaul time for the
...
engine, or not to exeed inch
oexceed.015
inch over the basic I.D. See latest edition of Service Instruction No. 1009 forrecommended overhaul
verhaul time.
616 529 ALL Intake ValveStem and Valve .0010L Guide .0028L .006L
ALL O.D. Intake ValveStem .4022 .4030 .4010
616 527 ALL Finished I.D. Intake Valve .4040 Guide .4050
617 951 ALL Intake and Exhaust Valve and Valve Cap Clearance (Rotator .000 Type SmallDia. Head) .004L .005L
618 952 A-B SolidTappet Clearance .006 (After Engine in Run) .012
G-D-J-S-T-Y-AF-Dry Tappet Clearance .028
BD-BE .080
619 530 A ValveRocker Shaft and .0001L Cylinder Head (No Bushing) .0013L .0025L
619 611 B-D-J-S-T-Y ValveRocker Shaft and Valve Rocker Bushing (Parallel.0001L ValveHeads) .0013L .0025L
S1-S2-S3-S5-S6-ValveRocker Shaft and Valve S7-S9-S10-T2-T33-Rocker Bushing (Angle Valve .0001L AF Heads) .0013L .0025L
619 530 A Finished I.D. of ValveRocker Shaft Bores in Cylinder Head .6246
619 611 B-D-G-J-S-T-Y (No Bushings) .6261 .6270
Finished I.D. of Valve Rocker Shaft (Bushing)in Cylinder
Head (ParallelValve Heads) .6270
SSP1776 1-10
SERVICE TABLE OF LIMITS
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