Kubota WSM 05-E4B Series User Manual

3. Install
the injection nozzle (2) jetted with the proper
injection
pressure
to the injection pump pressure
tester (1). (Refer to the photo.)
(1) Injection pump pressure test-
er
(2) Injection nozzle
(3) Protection cover for jetted
fuel
4.
Set
the speed control lever to the maximum speed
position.
5.
Operate the starter to increase the pressure.
NOTE
• If the pressure can not reach the service
limit, replace the pump with a new one or
repair it at a Kubota-authorized pump
service shop.
• Never try to disassemble the injection pump
assembly.
For repairs, you are strongly requested to
contact a Kubota-authorized pump service
shop.
Fuel tightness of
pump element
Service limit
13.7 MPa
140 kgf/cm
2
1990 psi
4.11 Checking fuel tightness of
delivery valve
Tools required
• Injection pump pressure tester
1. Remove the injection pipes and glow plugs.
2.
Set an injection
pump pressure tester (1) to the fuel
injection pump.
3. 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
(3) Protection cover for jetted
fuel
4.
Operate the starter to increase the pressure.
5. Stop
the
starter
when the fuel jets from the injection
nozzle (2). After that, turn the flywheel by hands
and raise the pressure to approx. 13.73 MPa
(140.0 kgf/cm
2
, 1991 psi).
6. Now turn the flywheel back about half a turn (to
keep the plunger free) and keep the flywheel at this
position.
7. Measure the time until the pressure drops.
NOTE
• If the measurement
is less than service limit,
replace the pump with a new one or repair it
at a Kubota-authorized pump service shop.
• Never try to disassemble the injection pump
assembly.
For repairs, you are strongly requested to
contact a Kubota-authorized pump service
shop.
Fuel tightness of
delivery valve
Service specifi-
cation
10 seconds
From 13.73 to 12.75 MPa
From 140.0 to
130.0 kgf/cm
2
From 1991 to 1849 psi
Service limit
5 seconds
From 13.73 to 12.75 MPa
From 140.0 to
130.0 kgf/cm
2
From 1991 to 1849 psi
4.12 Checking injection nozzle
spraying condition
CAUTION
• Check the injection pressure and condition after
you make
sure that there is nobody standing in
the direction the fume goes.
SERVICING
4. Checking and adjusting 4. ENGINE
05-E4B SERIES,05-E4BG SERIES
4-23
KiSC issued 03, 2023 A

Kubota WSM 05-E4B Series Specifications

General

Brand	Kubota
Model	WSM 05-E4B Series
Category	Engine
Language	English