New Holland 40 Series Repair Manual page 29

- - - - - - - - - - - - - - C H A P T E R 1 - - - - - - - - - - - - - -
R1-7
Valve Assemblies
Valve Spring
Lock
Intake Valve
3. Seal
4. Spring
2. Spring Rotator 5. Valve
Inspection and Repair, Cylinder Head
11
Core Plug Installation
R1-9
1. Cylinder head core plugs if discoloured
(rusty), or leaking require changing. Be-
fore fitting new plugs remove all old sealer
from the cylinder head. Apply sealant G,
see "Specifications", to the new plug mat-
ing faces, and drive the new plugs into lo-
cation, Figure 11.
11
Exhaust Valve
6. Valve
7. Spring
8. Seal
9. Spring Rotator
10. Spring Rotator
11. Valve Spring Lock
Core plugs required, 4 Cylinder Head:-
4 off, in the top and 1 off, in the rear of the cyl-
inder head.
3 off, in the Intake face.
Core plugs required, 6 Cylinder Head:-
6 off, In the top and 1 off, in the rear of the cyl-
inder head.
5 off, in the intake face.
2. Scrape all gasket surfaces clean and
wash cylinder head in a suitable solvent,
also cleaning valve guide bores.
NOTE: Ensure injector washers have been
removed prior to cleaning.
3. Inspect cylinder head for nicks and burrs
on mating face remove using a suitable
abrasive and ensure faces are clean after
repair.