O.D.
Exhaust Valve Guide
O.D.
Exhaust Valve Guide
I.D.
Exhaust Valve Guide Hole in Cylinder Head
I.D.
Exhaust Valve Guide Hole in Cylinder Head
I.D.
Exhaust Valve Guide Hole in Cylinder Head
I.D.
Exhaust Valve Guide Hole in Cylinder Head
Intake Valve Guide and Cylinder Head
O.D. Intake Valve Guide
I.D. Intake Valve Guide Hole in Cylinder Head
Exhaust Valve Stem and Valve Guide
Exhaust Valve Stem and Valve Guide (Parallel Valve Heads)
Exhaust Valve Stem and Valve Guide
Exhaust Valve Stem and Valve Guide (Angle Valve Heads)
Exhaust Valve Stem and Valve Guide (Angle Valve Heads -Helicopter)
O.D.
Exhaust Valve Stem
O.D.
Exhaust Valve Stem
O.D.
Exhaust Valve Stem
O.D.
Exhaust Valve Stem (Parallel Valve Heads)
O.D.
Exhaust Valve Stem (Angle Valve Heads)
1-9
Dimensions Clearances Mfr. Mfr. Min. Serv. Min. Serv.
& Max. & Max. Max. Max.
.6267
.6272
.6633
.6638
.6953
.6958
.5913
.5923
.6247
.6257
.6613
.6623
.6933
.6943
.0010T
.0025T
.5933
.5938
.5913
.5923
.0020L .0038L (A)
.0040L .0060L (A)
.0035L .0053L (A)
.0037L .0050L (A)
.0035L .0055L (A)
.4012
.4020
.4320
.4333
.4332
.4340
.4935
.4945 .4915
.4955
.4965 .4937
Service allowable limits of .4937 or .4915 is applicable only to inconel
or nimonic valves.
I I
SERVICE TABLE OF LIMITS
PART 1 DIRECT DRIVE ENGINES
Ref. Ref.
New Old
615 527
616 529
616 527 617 951 618 952
619 530 619 611
619 530 619 611
Chart
A-B-D A1-G-J Y G-J-S-T-BD-BE S1-S2-S3-S5-S6-
T2-T3-AF S7-S9-S10
er exhaust valves may have exhaust valve guides that
1/2 inch diameter. are .003 in. over the maximum inside
diameter limit, anytime
yytime up to 300 hours of service. After 300 hours of service, inside diameter of exhaust valve
guide may increaase .001 in. during each 100 hours of operation up to the recommended overhaul time for the
engine, or not to
exceed .015 inch over the basic I.D. See latest edition of Service Instruction No. 1009 for
recommended overhaul time. ALL
ALL ALL
A-B
G-D-J-S-T-Y-AF-BD-BE A
B-D-J-S-T-Y
S1-S2-S3-S5-S6-
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：Lycoming SERVICE TABLE OF LIMITS AND TORQUE VALUE RECOMMENDATIONS(9)
