· 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
9.8
MPa
(100
kgf/cm
2
,
1422
psi).
3.
Align the plunger with the bottom dead center.
4.
Measure the time needed
to
decrease the initial pressure.
5.
If the measurement is less than allowable limit, replace the delivery
valve.
See engine
specifications.
Reference value
10
seconds or more
Allowable limit
5 seconds
1.
Connector
2. Pressure
Sensor
Pressure gauge
construction
14.7
MPa
(150
kgf/cm
2
,
2133
psi) and
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.
Injection Pipe
115
Unit:
mm
(in.)
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