Introduction; Setup And Inspection - Yanmar MP series Service Manual

ADJUSTMENT
INTRODUCTION
This section of the Service Manual describes the
adjustment procedures necessary to setup and
adjust the fuel injection pump and governor.
The fuel injection pump delivery must be calibrated,
whenever the pump is disassembled.
A fuel pump test bench (Figure 6-1) is required to
make the necessary adjustments.
I
SETUP AND INSPECTION
I
1. Verify adjusting nozzle assembly and injection
I
starting pressure.
Figure 6-1
2. Inspect the high pressure injection line.
YANMAR
MP
series service
Manual
Inner diameter
Outer diameter x length
Minimum bending radius
3. Mount the fuel injection pump (Figure 6-2) on
the pump tester platform.
0.08 in.
(2.0 mm)
0.24
x
23.62 in.
(6.0
x
600 mm)
0.98 in.
(25 mm)
Figure 6-2
4. Remove the oil fill plug on the top of the
governor case. Fill (Figure 6-3, (1)) the pump
with about 6.75 oz (200 cc) of pump oil or
engine oil.
Figure
6-3
5. Securely tighten all fuel lines to the fuel pump
and tester.
6. Set the oil feed pressure (Figure 6-4) at
2.8-4.3 psi (1 9.6 - 29.4 kPa, 0.2
-
0.3 kgf/cm2),
temperature at 40
*
2°C (1 04 3.6"F).
Figure 6-4
7. Operate the pump tester to purge the fuel lines
of all air.