New Holland CX720 Repair Manual page 1926

Fuel line High pressure - Install (B.20.A.36.20 - F.10.A.15)
CX720, CX740, CX760, CX780, CX820, CX840
1. Make sure the clamps (4) holding lines together are
tight.
NOTE: High-pressure fuel lines must be installed as a set.
It is much easier than installing them individually.
2. Wiggle the high-pressure fuel injection lines into po-
sition on the engine. Start from the back and go to-
ward the front of the engine.
3. Install the injection lines (2) onto the injection pump
(3) and tighten the nuts to 22 N·m - 27 N·m (16 ft.
lbs. - 20 ft. lbs.). Tighten the bracket (1) holding the
high-pressure fuel lines to the intake manifold. Use
two wrenches to tighten the lines to prevent acciden-
tal rotation of the pumping element.
4. Connect the high fuel injection lines to the fuel injec-
tors one at a time starting with cylinder No. 1.
NOTE: Do not remove the caps from the fuel lines or com-
ponents until they are to be connected. This will help pre-
vent the entry of dirt into the system.
5. Tighten the fuel injection line to injector nuts to 22
N·m - 27 N·m (16 ft. lbs. - 20 ft. lbs.).
6. Install the low-pressure fuel lines and filter assembly
back on the engine. Tighten the nuts to specification.
7. Connect the battery ground cables to both batteries.
8. Run the engine and check for leaks.
9. If necessary, purge the high-pressure fuel lines of air
by loosening the connector one-half to one turn and
cranking the engine until solid fuel, free from bubbles,
sprays from the connection. Refer to Fuel injection
pump - Bleed (B.20.A.21 - F.35.A.25)
Wear safety glasses or a protective face shield when
working with high-pressure fuel. Keep eyes and hands
away from nozzle spray. Fuel spraying from the nozzle
under high pressure can penetrate the skin and cause
blood poisoning. Medical attention should be provided
immediately in the event of skin penetration.Take ex-
treme care of moving belts and pulleys. Z031
POWER PRODUCTION - FUEL AND INJECTION SYSTEM
WARNING
2 4/7/2006
B.20.A / 96
1
70-150-2232