New Holland CX720 Repair Manual page 1908

Fuel injector - Assemble (B.20.A.29 - F.10.A.20)
CX720, CX740, CX760, CX780, CX820, CX840
1. Make sure all parts are absolutely clean and undam-
aged prior to re-assembly. Rinse all parts in clean
fuel oil and assemble the components while still wet.
Place the shims, spring and spring seat into the injec-
tor body bore. Place the injector body into the holding
fixture.
Assemble the needle valve into the nozzle body and
then position the dowelled adaptor plate onto the
nozzle body. Insert this assembly into the nozzle re-
taining nut.
2. Carefully assemble the dowelled adaptor plate and
the nozzle retaining nut assembly onto the injector
body, tighten the retaining nut to 45 N·m (33 ft. lbs)
torque.
To set the nozzle opening pressure, connect the in-
jector to the test rig as described in Fuel injector
- Test (B.20.A.29 - F.40.C.01) and add or subtract
shims from the spring until the specified initial setting
opening pressure of between 280-300 bar (4060-
4350 lbf/in2) is achieved.
POWER PRODUCTION - FUEL AND INJECTION SYSTEM
2 4/7/2006
B.20.A / 78
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