Komatsu PC130-7, Shop Manual, Page: 78 / 342

20-160
PC130-7
TESTING AND ADJUSTING
5. Function of adjusting governor [03]
This function is used to adjust the governor lever
stroke after the governor actuator, fuel injection
pump, or governor spring is removed and
installed or replaced, or when the high idling
speed is low or engine speed is not stabilized.
1) Selecting and executing function
i) Select menu No. [03] in the menu selec-
tion mode.
ii) Press set switch (5) to execute this func-
tion.
2) Condition of governor motor
If this function is executed, all the governor
control functions are cancelled, and then the
operating angle of the governor actuator fol-
lows up only the operation signal of the fuel
control dial.
a
While this function is executed, [GOV] is
displayed in display section (1) and
[gSET] is displayed in service meter sec-
tion (2).
3) Adjusting governor lever stroke
a
The turning direction of the governor
spring described below is the direction
when the governor actuator is seen from
the fuel injection pump side.
i) Keep the fuel control dial in the MAX
position.
ii) Loosen locknut (2) on the governor actu-
ator side of governor spring (1).
iii) Turn governor spring (1) clockwise to
reduce its installed length (a) and return
governor lever (3) of the fuel injection
pump to a position where it does not
touch the full stopper.
iv) Turn governor spring (1) counterclock-
wise to increase its installed length (a)
and stop it when governor lever (3) of the
fuel injection pump touches the full stop-
per.
•
Standard installed length (a) (Refer-
ence): 262 mm
v) Turn governor spring (1) counterclock-
wise further by 2.5 turns to compress the
spring in governor spring (1).
a
Since the inside spring is com-
pressed, only the outer cylinder of
governor spring (1) moves toward
the fuel injection pump by about 3.1
mm (the installed length does not
change).
vi) Fixing governor spring (1), tighten lock-
nut (2) on the governor actuator side.
a
Before fixing the locknut, check that
the water drain hole of the governor
spring is directed down. If the water
drain hole is not directed down,
loosen locknut (4) on the fuel injec-
tion pump side and turn the whole
governor spring to adjust (Take care
not to change the adjustment dimen-
sion of the governor spring).
3
Locknut:
11.8 – 19.6 Nm {1.2 – 2.0 kgm}
SPECIAL FUNCTIONS OF MONITOR PANEL
(1)