Yanmar MP series Service Manual page 78

FUEL INJECTION PUMP
4. Turn the link lifter plate counterclockwise to the
6 o'clock position and install the governor
assembly and link into the pump body
(Figure 5-84).
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Figure 5-84
Note: Do not force the link during installation,
as damage can occur to the link and
control rack pin.
Note: Figure 5-85 illustrates the governor link
connection to the control rack. The
actual connection is blind, therefore this
illustration is used to assist during
assembly.
5. While installing the governor assembly, slide
the link lifter as shown (Figure 5-85,4), to allow
the link to slide in to align with the control rack
pin.
1. Control Rack 4. During Assembly
2. Governor Link 5. During Operation
3. Link Lifter
Figure 5-85
6. Install two governor housing bolts by hand to
hold the governor in place.
7.
While pushing the governor lever assembly to
the full stop position through the stop solenoid
opening, rotate the link lifter clockwise to the
12 o'clock position.
8. Verify the link installation by watching plunger
rotation from the top of the hydraulic head. The
plunger should rotate in both directions while
moving the control rack in and out.
9. Install a new copper seal (Figure 5-86, (3)),
plunger and barrel plug (Figure 5-86, (1)) and
O-ring (Figure 5-86, (2)). Tighten to
(MP2 - 22 - 26 ft-lb. (30
-
35 N.m))
(MP4 - 33 - 37 ft-lb. (45
-
50 N.m)).
Figure 5-86
5-36
MP Series Service Manual
YANmAR