6-22 POWER UNIT
Valve stem end length
Measure the valve stem end length 1.
$ 09900-20102: Vernier calipers
Service limit: IN & EX 6.05 mm (0.238 in)
If the measurement exceeds the service limit, replace the valve.
Valve stem runout
Measure the valve stem runout.
$ 09900-20602: Dial gauge
09900-20701: Magnetic stand
09900-21304: Steel “V” block set
Service limit: IN & EX 0.05 mm (0.002 in)
If the measurement exceeds the service limit, replace the valve.
Valve head radial runout
Measure the valve head radial runout.
$ 09900-20602: Dial gauge
09900-20701: Magnetic stand
09900-21304: Steel “V” block set
Service limit: IN & EX 0.08 mm (0.003 in)
If the measurement exceeds the service limit, replace the valve.
Valve head thickness
Measure the valve head thickness T.
$ 09900-20102: Vernier Calipers
Standard : IN & EX 1.0 mm (0.04 in)
Service limit: IN 0.6 mm (0.02 in)
EX 0.7 mm (0.03 in)
If the measurement exceeds the service limit, replace the valve.
45˚
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