Doosan DX60R Shop Manual page 292

Removal of Valve Guides
Note: Removal of the valve guides should be postponed until
inspection and measurement
performed. See "Inspection of Valve Guides" on page -114
1. Using a drift pin and hammer, drive the valve guides (1,
Figure 132) out of the cylinder head.
Cleaning of Cylinder Head Components
Fume / Burn Hazard!
Always read and follow safety related precautions found on
containers of hazardous substances like parts cleaners,
primers, sealants and sealant removers.
Failure to comply could result in death or serious injury.
Thoroughly clean all components using a non°žmetallic brush
and an appropriate solvent. Each part must be free of carbon,
metal filings and other debris.
Inspection of Cylinder Head Components
Visually inspect the parts. Replace any parts that are obviously
discolored, heavily pitted or otherwise damaged. Discard any
parts that do not meet its specified limit.
Any part which is found defective as a result of inspection
or any part whose measured value does not satisfy the
standard or limit must be replaced.
Any part determined to not meet the service standard or
limit before the next service, as determined from the state
of current rate of wear, should be replaced even though the
part currently meets the service standard limit.
Engine
Page 112
procedures
WARNING
CAUTION
CAUTION
have been
Figure 132
Figure 133
FG009153
SP001693