Fuel System - Kubota SM-E3B Series Workshop Manual

SM-E3B SERIES WSM

(4) Fuel System

Thermostat Valve Opening Temperature
1. Suspend the thermostat in the water by a string with its end
inserted between the valve and seat.
2. Heating the water gradually, read the temperature when the
valve opens and leaves the string.
3. Continue heating and read the temperature when the valve
opens approx. 8.0 mm (0.31 in.).
4. If the measurement is not within the factory specifications,
replace the thermostat.
Thermostat's valve
Factory spec.
opening temperature
Temperature at which
thermostat completely Factory spec.
opens
Injection Timing
1. Remove the injection pipes.
2. Remove the engine stop solenoid.
3. Turn the flywheel counterclockwise (viewed from flywheel side)
until the fuel fills up to the hole of the delivery valve holder (3) for
No. 1 cylinder.
4. 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 °).
5. Turn the flywheel counterclockwise to set at around 0.44 rad
(25 °) before T.D.C..
6. Slowly turn the flywheel counterclockwise and stop turning when
the fuel begins to come up, to get the present injection timing.
7. 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 cylinder.
8. Check to see if the timing angle on the flywheel is aligned with the
alignment mark (2).
9. If injection timing is out of adjustment, readjust the timing with
shims.
(1) Timing Line
(2) Alignment Mark
(3) Delivery Valve Holder
(4) Shim (Soft Metal Gasket Shim)
S-17
DIESEL ENGINE
69.5 to 72.5 °C
157.1 to 162.5 °F
85 °C
185 °F
W1035849
(5) Two-holes : 0.20 mm (0.0079 in.)
Two-holes : 0.175 mm (0.00689 in.)
(6) One-hole : 0.25 mm (0.0098 in.)
(7) Without hole : 0.30 mm (0.012 in.)
(8) Three-holes : 0.35 mm (0.014 in.)
KiSC issued 03, 2011 A