C175-16 Engine for 795F Series AC Off-Highway Trucks Caterpillar


Cylinder Head Valves

Usage:

793F AC EMD



图 1g01811776

(1) 318-4785 弹簧

在测试力下的长度 ... 88 mm (3.5 in)
测试力 ... 810 ± 40 N (182.1 ± 9.0 lb)
测试后的自由长度 ... 109.24 mm (4.301 in)
外径 ... 49.01 mm (1.930 in)

(2) 318-4786 弹簧

在测试力下的长度 ... 82.63 mm (3.253 in)
测试力 ... 540 ± 27 N (121.4 ± 6.1 lb)
测试后的自由长度 ... 102.77 mm (4.046 in)
外径 ... 34.398 mm (1.3543 in)

注: 组装到缸盖前,将清洁的发动机机油涂敷到阀导管的外径上。

(A) 阀导管的尺寸

到阀导管顶部的高度 ... 42.0 ± 0.5 mm (1.65 ± 0.02 in)
安装后进气阀的新阀导管孔径 ... 12.626 ± 0.020 mm (0.4971 ± 0.0008 in)
安装后排气阀的新阀导管孔径 ... 12.626 ± 0.020 mm (0.4971 ± 0.0008 in)

注: 组装到阀导管前,将清洁的发动机机油涂敷到阀杆上。

(B) 阀的尺寸

新进气阀杆直径 ... 12.573 ± 0.010 mm (0.4950 ± 0.0004 in)
排气阀杆直径 ... 12.464 ± 0.025 mm (0.4907 ± 0.0010 in)

(C) 气门头直径

进气 ... 58.50 ± 0.15 mm (2.303 ± 0.006 in)
排气 ... 56.50 ± 0.15 mm (2.224 ± 0.006 in)

(D) 气门面角

进气 ... 70.75 ± 0.25 度
排气 ... 45.60 ± 0.25 度



图 2g01647817

(E) 阀座镶圈表面的角度

进气 ... 20.00 ± 0.25 度
排气 ... 45.00 ± 0.25 度

(F) 阀座镶圈的尺寸

进气阀座镶圈的外径 ... 62.100 ± 0.013 mm (2.4449 ± 0.0005 in)
缸盖中进气阀座镶圈孔 ... 62.000 ± 0.015 mm (2.4409 ± 0.0006 in)
排气阀座镶圈的外径 ... 61.120 ± 0.013 mm (2.4063 ± 0.0005 in)
缸盖中排气阀座镶圈孔 ... 61.000 ± 0.015 mm (2.4016 ± 0.0006 in)
阀座镶圈表面的外径 ... 50.00 ± 0.25 mm (1.968 ± 0.010 in)

(G) 缸盖中阀座镶圈孔的深度 ... 16.00 ± 0.15 mm (0.630 ± 0.006 in)

Caterpillar Information System:

2008/12/22 An Improved Window for Some Generator Set Enclosures {7274, 7310, 7310}
2008/12/29 A New Cylinder Head Gasket is Now Used {1100, 1124}
The Hydraulic Tank Covers are Shipped with Possible Contamination{5056} The Hydraulic Tank Covers are Shipped with Possible Contamination{5056}
The Hydraulic Tank Covers are Shipped with Possible Contamination{3177, 5056} The Hydraulic Tank Covers are Shipped with Possible Contamination{3177, 5056}
793F and 793F XQ Off-Highway Trucks Safety Messages
2009/02/16 An Improved Gasket Helps Prevent Leaks on Skid Steer Loaders, Multi Terrain Loaders and Compact Track Loaders {1273}
511 Track Feller Buncher, 521 Track Feller Buncher, 522 Track Feller Buncher and 532 Track Feller Buncher Machine Systems Relief Valve (Line) - Test and Adjust
966H Wheel Loader and 972H Wheel Loader Braking and Hydraulic Fan System Air Pump (Variable Pitch Fan) Pressure - Test
2008/12/22 A New Oil Gauge Is Now Used for 140M Motor Graders {1326}
3408E and 3412E Engines for the 844 Wheel Dozer and for 988F Series II and 990 Series II Wheel Loaders Electronic Service Tools
12K, 120K, 140K and 160K Motor Graders Power Train Clutch Pedal - Adjust
CB54 and CB64 Asphalt Compactors Machine Electronic Control System MID 039 - CID 1618 - FMI 03
The Pipe Assembly in the Kickout and Positioner Group on Certain Backhoe Loaders May Be Too Long{5109, 5112} The Pipe Assembly in the Kickout and Positioner Group on Certain Backhoe Loaders May Be Too Long{5109, 5112}
2008/12/15 A New Procedure is Available to Replace the Bearings for the Planetary for the Track Drive on Cold Planers {4050, 4084}
3408E and 3412E Engines for the 844 Wheel Dozer and for 988F Series II and 990 Series II Wheel Loaders System Overview
AccuGrade® CD700 Grade Control System (GPS/ATS/Laser/Cross/Slope/Sonic) v10.8 for Motor Graders MID 114 - CID 2260 - FMI 02
AccuGrade® CD700 Grade Control System (GPS/ATS/Laser/Cross/Slope/Sonic) v10.8 for Motor Graders MID 114 - CID 2260 - FMI 03
AccuGrade® CD700 Grade Control System (GPS/ATS/Laser/Cross/Slope/Sonic) v10.8 for Motor Graders MID 114 - CID 2260 - FMI 04
AccuGrade® CD700 Grade Control System (GPS/ATS/Laser/Cross/Slope/Sonic) v10.8 for Motor Graders MID 114 - CID 2260 - FMI 07
C7 Engines for Caterpillar Built Machines Electrical Connectors
C7 Engines for Caterpillar Built Machines Configuration Parameters
793F and 797F Off-Highway Trucks Braking System Electrical Input Components
2008/12/22 New Lock Washers Are Used {1150, 1201}
2008/12/22 An Improved Steering Column Is Now Available {4310, 4338, 4343}
Back to top
The names Caterpillar, John Deere, JD, JCB, Hyundai or any other original equipment manufacturers are registered trademarks of the respective original equipment manufacturers. All names, descriptions, numbers and symbols are used for reference purposes only.
CH-Part.com is in no way associated with any of the manufacturers we have listed. All manufacturer's names and descriptions are for reference only.