New Holland LS140 Workshop Manual page 135

Op. 10 218 34
NOZZLE AND HOLDER
Specification
Nozzle type
Needle valve diameter
Pintle diameter
Valve setting pressure
Spraying angle
Construction/Function
The nozzle has been machined to inject fuel which is
pressure-fed from the injection pump to the
combustion chamber. Fuel is pressure-fed from the
oil hole of the nozzle holder to the nozzle body and
sprayed from the nozzle compressing the spring
when the pressure exceeds the specified value.
Some fuel lubricates and cools the nozzle and nozzle
body and returns via the return pipe.
Disassembly/Inspection
1. Place the nozzle holder (body), 8, in a vise and
turn the nozzle nut, 2, to disassemble.
NOTE: Care should be taken so the needle valves do
not fall when the nozzle is removed.
2. Wash the nozzle body and needle valve and
inspect the nozzle for seizure, sticking, and fuel
leakage on the seat surface. If fuel leakage is
detected, replace the nozzle, 3.
3. Inspect the upper and lower contact surfaces of
the spacer, 4, and correct so that positive contact
can be obtained.
4. Check the nozzle needle valve-contact surface
on the push rod, 5, for wear and spring seat for
cracks.
SECTION 10 - ENGINE
Throttle type
4 mm (0.16")
1 mm (0.04")
153 - 163 bar
(2207 - 2350 PSI)
4°
10-100
Throttle-Type Nodule
1. Valve closed
2. Valve open
3. Full opening (main jet)
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