Cleaning Of Cylinder Head Components - Yanmar 3TNV82A Service Manual

4-Valve Cylinder Head
3. Remove the valve keepers (Figure 6-46, (1)).
4. Slowly release the tension on the valve spring.
5. Remove the spring retainer (Figure 6-46, (2)),
valve spring (Figure 6-46, (3)).
(7)
(6)
Figure 6-46
6. Repeat the procedure with all the remaining
valves.
Note: If the valves are to be reused, identify
them so they can be installed in their
original location.
7. Remove the injector nozzle protectors
(Figure 6-46, (6)) and the seats
(Figure 6-46, (7)).
8. Turn the cylinder head so the exhaust port side
faces down. Remove the intake and exhaust
valves (Figure 6-46, (5)) from the cylinder
head.
9. Remove the valve stem seals
(Figure 6-46, (4)).
TNV DI Service Manual
Removal of Valve Guides
Note: Removal of the valve guides should be
(1)
(2)
1. Using a drift pin and hammer, drive the valve
(3)
(4)
(5)
0001867
Cleaning of Cylinder Head
Components
postponed until inspection and
measurement procedures have been
performed. See Inspection of Valve
Guides on page 6-53.
guides (Figure 6-47, (1)) out of the cylinder
head.
Figure 6-47
A
WARNING
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.
ENGINE
(1)
0001868
0000014en
6-51