Perkins 403C-11, Workshop Manual, Page: 36 / 128

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26 Workshop Manual, TPD 1458E, issue 3 - Perkins Confidential: Green
400 Series
To inspect - valve stem and thickness of valve head Operation 3-14
Use a micrometer to check the valve stem diameters at positions 1, 2 and 3, if less than the service limit, renew.
Check the valve stem for wear or damage, if outside the service limit, renew.
Inlet valve
Exhaust valve
Valve head thickness
If the valve head thickness (4) is less than the service limit, renew the valve.
Engine
Diameter mm (in)
Standard Service limit
All models 6,955 - 6,970 (0.27382 - 0.27441) 6,89 (0.271)
Engine
Diameter mm (in)
Standard Service limit
All models 6,940 - 6,950 (0.27323 - 0.27362) 6,84 (0.269)
Engine
Thickness mm (in)
Standard Service limit
All models 0,925 - 1,075 (0.03642 - 0.04232) 0,5 (0.020)
H1047
1
1 2
2
3
3
4