Removing The Fuel Injection Pump Unit - Kubota KX080-3 Workshop Manual

WSM KX080-3 Service
(5) Injection Pump Unit
Injection Pump Unit

(Removing the fuel injection pump unit)

1. Detach the gear cover for the fuel injection pump unit from the
gearcase.
2. Place the piston of the 4th cylinder at the top dead center in the
compression stroke. Fix the flywheel with the flywheel stopper.
IMPORTANT
• Look for the align mark on the idle gear 2. Using a white
marking pen or the like, put an align mark on the engaged
tooth of the idle gear. This helps to reassemble these gears
in mesh later.
NOTE
• When the already existing align marks align with each other,
there is no need to put another align mark.
3. Unscrew the two plugs (3) of the injection pump unit.
4. Tighten the upper fuel cam shaft lock screw (5) until it comes into
contact with the fuel cam shaft. Make sure the cam shaft does
not move any longer.
5. Tighten the lower fuel cam shaft lock screw (5) until it comes into
contact with the fuel cam shaft.
NOTE
• Never overtighten the lock screws when they have come
into contact with the cam shaft. Otherwise the injection
pump itself may get damaged.
• Use of a socket set screw (dog point type) in recommended
for best results. Such screw can be constructed as shown
in figure (a).
6. Loosen the injection pump gear mounting nut. Using the specific
gear puller, take out the gear (6).
NOTE
• Be careful not to drop the key.
7. Disconnect the lubricating oil pipe (4).
8. Loosen the three injection pump unit mounting nut (2).
9. Remove the injection pump unit support (1) and take out the
injection pump unit.
A M8 Pitch 1.25
B 5 mm dia. (0.197 in. dia.)
C 4 mm (0.157 in.)
D 45 mm (1.772 in.)
E 10 mm (0.39 in.) : Conspicuously Painted
(1) Injection Pump Unit Support
(2) Injection Pump Unit Mounting Nut
(3) Plug
III-S-123
(4) Lubricating Oil Pipe
(5) Fuel Cam Shaft Lock Screw
(Socket Set Screw Dog Point Type)
(6) Injection Pump Gear
W1175054
Engine