Kubota D650-B Handbuch Seite 162

Unit: mm (in.!
[A] Pressure gauge
construction
(8)
.1
l1-jrG~ 1~161'---------=-~---'
...
~
2)109\1
. , Checking Fuel Tightness of Delivery Valve of
Fuel
Injection
Pump
1) Set a pressure gauge to the pump.
2) Rotate the flywheel to increase the pressure to 21.57 MPa
(220 kgf/cm
2
,
3129 psi).
3) Align the plunger with the bottom dead center.
4) Measure the time needed to decrease the initial pressure
from 21.57 to 20.59 MPa (220 to 210 kgf/cm
2
,
3129 to
2987 psi).
5) If the measurement is less than allowable limit, replace the
del ivery valve.
Reference value 10 seconds or more
Allowable limit
5 seconds
(1)
Connector
(2) Pressure sensor
68.6 MPa (700 kgf/cm 2 , 9954 psi)
(3)
Non-drying adhesive
(4)
Weld entire circumference
(5)
Copper packing
(6)
S45C Steel tube
(7)
S45C Hexagonal steel tube
(8) I njection pipe
~l'@!~
.,
166