Kubota V3600-E3 Shop Manual page 123

V3-E3B SERIES, V3-E3CB SERIES, V3-E3BG SERIES, WSM
Fuel Tightness of Delivery Valve
1. Remove the solenoid.
2. Remove the injection pipes.
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).
5. Run the starter to increase the pressure.
6. Stop the starter when the fuel jets from the injection nozzle. After
that, turn the flywheel by the hand and raise the pressure to
(IDI : approx. 13.73 MPa (140.0 kgf/cm
approx.18.63 MPa (190.0 kgf/cm
7. Now turn the flywheel back about half a turn (to keep the plunger
free). Maintain the flywheel at this position and clock the time
taken for the pressure to drop from (IDI : 13.73 to 12.75 MPa
(from 140.0 to 130.0 kgf/cm
to 17.65 MPa (190.0 to 180.0 kgf/cm
8. Measure the time needed to decrease the pressure from (IDI :
13.73 to 12.75 MPa (from 140.0 to 130.0 kgf/cm
1849 psi)), (DI : 18.63 to 17.65 MPa, (190.0 to 180.0 kgf/cm
2702 to 2560 psi)).
9. If the measurement is less than allowable limit, replace the pump
with new one or repair at a Kubota-authorized pump service
shop.
Factory
spec.
Fuel tightness of
delivery valve
Allowable
limit
NOTE
• Never try to disassemble the injection pump assembly. For
repairs, you are strongly requested to contact a Kubota-
authorized pump service shop.
(1) Injection Pump Pressure Tester
(2) Injection Nozzle
(3) Protection Cover for Jetted Fuel
S-31
DIESEL ENGINE
2
, 1991 psi)), (DI :
2
, 2702 psi)).
2
, from 1991 to 1849 psi)), (DI : 18.63
2
, 2702 to 2560 psi)).
2
, from 1991 to
V3600-E3B
V3600-T-E3B, 10 seconds
13.73 → 12.75 MPa
V3600-E3CB,
140.0 → 130.0 kgf/cm
V3600-T-E3CB,
1991 → 1849 psi
V3300-E3BG,
V3600-T-E3BG
V3800DI-T-
E3B, 10 seconds
18.63 → 17.65 MPa
V3800DI-T-
190.0 → 180.0 kgf/cm
E3CB,
2702 → 2560 psi
V3800DI-T-
E3BG
V3600-E3B,
V3600-T-E3B, 5 seconds
13.73 → 12.75 MPa
V3600-E3CB,
140.0 → 130.0 kgf/cm
V3600-T-E3CB,
1991 → 1849 psi
V3300-E3BG,
V3600-T-E3BG
V3800DI-T-
E3B, 5 seconds
18.63 → 17.65 MPa
V3800DI-T-
190.0 → 180.0 kgf/cm
E3CB,
2702 → 2560 psi
V3800DI-T-
E3BG
[A] V3600-E3B, V3600-T-E3B,
V3600-E3CB, V3600-T-E3CB,
V3300-E3BG, V3600-T-E3BG
[B] V3800DI-T-E3B, V3800DI-T-E3CB,
V3800DI-T-E3BG
2
,
2
2
2
2
W1017786