New Holland LS140 Workshop Manual page 136

Reassembly/Adjustment
1. Before fitting a new nozzle assembly, soak it in
heated light oil at 50° - 60° C (120° -140° F) to
remove the anticorrosive agent from the nozzle.
Slide the body on the needle valve so they slide
smoothly.
2. Turn the nozzle body upside down, fit the shim,
spring, rod, spacer and nozzle in this order, and
tighten with a nozzle nut.
Injector Testing
After assembly, test and adjust the injection pressure
of the nozzle. Specification is 148 bar (2135 PSI).
Adjust pressure with shims, each 0.1 mm (0.004 in.)
shim equals 9.7 bar (142 PSI).
Using an injector nozzle tester, test each nozzle as
follows:
1. Nozzle Seat Leakage
Wipe the nozzle tip dry and apply a pressure of
130 bar (1885 PSI). The nozzle tip and bottom
face must remain essentially dry, and there must
be no tendency for drips of fuel to collect or fall.
A slight dampness can be ignored. If there is any
leakage from the nozzle seat, it must be
replaced.
2. Spray Pattern
Pump the tester rapidly (80 - 90 strokes per
minute) and observe the spray pattern. Fuel
should spray in a uniform conical shape with no
identifiable drops.
SECTION 10 - ENGINE
FUEL INJECTION PUMP
If trouble has been traced to this pump, disassembly,
inspection, assembly, and testing/setting must only
be carried out by fuel equipment specialists.
AIR CLEANER
Construction/Function
The cyclonic air cleaner houses a paper element
which removes dirt or dust from air drawn in.
Inspection/Replacement
1. When the EIC signals to service the air cleaner,
take out the outer element and clean it by blowing
compressed air from the inside to the outside
(pressure lower than 75 bar [100 PSI]).
Do not remove the inner safety element.
2. When operating the machine in a dusty
environment, increase service frequency.
3. After cleaning the element, put a light inside the
element and check it for cracks, holes, or wear.
If damage is found or the gasket is broken,
replace the element.
4. When the inner safety element is dirty, replace
the element, do not clean it.
10-101
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