Chapter 3 Fuel Injection Eguipment
4. Adjustment of Fuel Injection Pump and
Governor
4LHA Series
14
(Stroke)
Rack
indicator
Part
number
121978-51500
(5)
Check
the control rack stroke
Make sure the rack position is at 14±0.5 mm on
the indicator scale when the governor control
lever is set at the maximum operating position.
If it is not at this value, change the link connect-
ing the governor and control rack.
NOTE: Links are available in 1 mm (0.0394 in.)
increments.
(6) Remove the plug in the oil filler
port
of the gover-
nor
case,
and
fill
the pump
with
about 400 cm
3
of
pump oill or engine oil.
Plug
(7) Complete fuel oil piping and operate the pump
tester to purge the line of air.
(8) Set the oil feed pressure
from
the pump tester to
the injection pump at the pressure specified in the
separate
service data sheet.
4-2
Adjustment
of
pre-stroke
(1) Remove the delivery valve holder of No.l cylinder.
Remove
the delivery valve spring, delivery valve
and
gasket.
(2)
Screw
the pre-stroke measuring device in the screw
hole on the top of pump.
(3) Set the control rack to the
full
throttle
position,
find
the
bottom
dead center of the plunger while
rotating
the pump by hand, and set the dial in-
dicator to
zero.
Pre-stroke
measuring device
3-2-32
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