Fuel System - Kubota M8540 Workshop Manual

M8540, M9540, WSM

(4) Fuel System

Injection Timing
1. Remove the timer gear lubricating pipe (1).
2. Remove the gear case cover (2).
3. Set the timer 0 ° restoring jig (4) to the timer gear(3).
4. Make sure of matching the injection timing align mark (5) of the
injection pump unit and the plate (gearcase), as shown in the
illustration.
5. Remove the injection pipes.
6. Remove the stop solenoid.
7. Turn the flywheel counterclockwise (viewed from flywheel side)
until the fuel fills up to the hole of the delivery valve holder (6) for
No.1 cylinder.
8. After the fuel fills up to the hole of the delivery valve holder for
No.1 cylinder, turn back (clockwise) the flywheel around 1.6 rad
(90 °).
9. Turn the flywheel counterclockwise to set at around 0.35 rad
(20 °) before T.D.C..
10.Slowly turn the flywheel counterclockwise and stop turning when
the fuel begins to come up, to get the present injection timing.
11.Check to see the degree on flywheel.
The flywheel has mark "1TC", "10" and "20" for the crank angle
before the top dead center of No.1 piston.
12.If the injection timing is not within the specification, rotate the
injection pump unit to adjust the injection timing.
IMPORTANT
• When installing the injection pump unit to the engine body,
follow the correct procedure.
See the "Injection Pump Unit".
Factory
Injection timing
spec.
Injection pipe retaining nut
Tightening torque
Injection pump unit
mounting nut
(1) Timer Gear Lubricating Pipe
(2) Gear Case Cover
(3) Timer Gear
(4) Timer 0 ° Restoring Jig
(5) Injection Timing Align Mark
(6) Delivery Valve Holder
1-S19
ENGINE
0.0917 to 0.117 rad
V3800DI-
(5.25 ° to 6.75 °) before
T-E3
T.D.C.
23 to 36 N·m
2.3 to 3.7 kgf·m
17 to 26 lbf·ft
18 to 20 N·m
1.8 to 2.1 kgf·m
13 to 15 lbf·ft
(a) Injection Timing Advanced
(b) Injection Timing Retarded
W1225920
KiSC issued 09, 2008 A