
Section 9
Inspection and Reconditioning
9.6
Normal:
Even a
ft
er long hours of operation a valve
can be reconditioned and reused if the face and
margin are in good shape. If a valve is worn to where
the margin is less than 1/32 in. do not reuse it. The
valve shown was in operation for almost 1000 hours
under controlled test conditions.
Bad Condition:
The valve depicted here should be
replaced. Note the warped head; margin damaged
and too narrow. These conditions could be a
tt
ributed
to excessive hours or a combination of poor operating
conditions.
Leakage:
A poor grind on face or seat of valve will
allow leakage resulting in a burned valve on one side
only.
Coking:
Coking is normal on intake valves and is not
harmful. If the seat is good, the valve could be reused
a
ft
er cleaning.
Содержание Comand Pro CH1000
Страница 1: ...SERVICE MANUAL HORIZONTAL CRANKSHAFT CH940 CH1000...
Страница 2: ......
Страница 4: ......
Страница 30: ...4 4 Section 4 Air Cleaner and Air Intake System...
Страница 52: ...6 6 Section 6 Lubrication System...
Страница 96: ...8 16 Section 8 Disassembly...
Страница 110: ...Section 9 Inspection and Reconditioning 9 14...
Страница 140: ...10 30 Section 10 Reassembly...
Страница 141: ......