Checking Injection Pump - Kubota WSM 05-E4B Series Workshop Manual

3. MAINTENANCE
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 if the timing angle lines on the flywheel is
aligned with the center of timing window (2).
The flywheel has mark [1TC], [10] and [20] for the
crank angle before the top dead center of No. 1
cylinder.
8. If injection timing is out of adjustment, readjust the
timing with shims.
Injection tim-
ing
-1
(3000 min
(rpm))
Injection tim-
ing
-1
(3200 min
(rpm))
Injection tim-
ing
-1
(3000 min
(rpm))
Injection tim-
Service
ing
Specifica-
-1
(2600 min
tion
(rpm))
Injection tim-
ing
-1
(2300 min
(rpm))
Injection tim-
ing
-1
(1800 min
(rpm))
Injection tim-
ing
-1
(1800 min
(rpm))

12.2 Checking injection pump

NOTE
• Never try to disassemble the injection pump
assembly. For repairs,
requested to contact a Kubota-authorized pump
service shop.
Tools required
• Injection pump pressure tester
3-18
0.3011 to
D1005- 0.3272 rad
E4B (17.25 to 18.75°)
before T.D.C.
0.3360 to
D1005- 0.3621 rad
E4B (19.25 to 20.75°)
before T.D.C.
0.3011 to
D1105- 0.3272 rad
E4B (17.25 to 18.75°)
before T.D.C.
0.2622 to
D1305- 0.2923 rad
E4B (15.25 to 16.75°)
before T.D.C.
0.2313 to
V15005- 0.2574 rad
E4B (13.25 to 14.75°)
before T.D.C.
D1005- 0.2575 to
E4BG, 0.2836 rad
D1105- (14.75 to 16.25°)
E4BG, before T.D.C.
D1305- 0.2487 to
E4BG, 0.2748 rad
V1505- (14.25 to 15.75°)
E4BG, before T.D.C.
you are strongly
CHECK AND MAINTENANCE
12. Check points of every 3000 hours
Fuel tightness of pump element
1. Remove the engine stop solenoid.
2. Remove the injection pipes and glow plugs.
3. Install the injection pump pressure tester to the
injection pump.
4. Install the injection nozzle (2) jetted with the proper
injection pressure to the injection pump pressure
tester (1).
(1) Injection pump pressure test-
er
(2) Injection nozzle
5. Set the speed control lever to the maximum speed
position.
6. Operate the starter to increase the pressure.
7. If the pressure can not reach the service limit,
replace the pump with new one or repair with a
Kubota-authorized pump service shop.
Fuel tightness of
Service limit
pump element
Fuel tightness of delivery valve
1. Remove the engine stop solenoid.
2. Remove the injection pipes and glow plugs.
3. Set a pressure tester to the fuel injection pump.
4. Install the injection nozzle (2) jetted with the proper
injection pressure to the injection pump pressure
tester (1).
(3) Protection cover for jetted
fuel
13.73 MPa
2
140.0 kgf/cm
1991 psi
05-E4B SERIES,05-E4BG SERIES
KiSC issued 03, 2023 A