New Holland CX720 Repair Manual page 1697

Valve drive Rocker assembly - Clearance (B.10.A.40.43 - F.45.A.12)
CX860, CX880
Handle all parts carefully. Do not put your hands or fingers between parts. Always wear suitable safety items
such as fitted clothing, safety goggles, gloves, shoes, etc. M954
1. Adjusting the clearance between the rocker arms
and the intake and exhaust valve crosspieces and
adjusting the pre-load of the pump injector rocker
arms must be done extremely conscientiously.
Take the cylinder associated with the valves involved
in the clearance adjustment into the combustion
phase.
The valves of this cylinder will be closed while they
balance those of the symmetrical cylinder.
The symmetrical cylinders are 1-6, 2-5 and 3-4.
To perform these operations correctly, proceed as
described Fuel injector - Clearance (B.20.A.29 -
F.45.A.12).
2. Adjusting clearance between rocker arms and intake
and exhaust valve crosspieces
- With a polygonal wrench, loosen the nut locking the
adjustment screw (1).
- Insert the blade of the feeler gauge (3).
- With an appropriate wrench, screw or unscrew the
adjustment screw.
- Check that the blade of the feeler gauge (3) can
slide with a slight amount of friction.
- Lock the nut (1) holding the adjustment screw still.
POWER PRODUCTION - ENGINE
CAUTION
2 4/7/2006
B.10.A / 151
1
MID0509A