Chapter 3 Fuel Injection Equipment
9. Pump Reassembly, Adjustment and Inspection
,
4LHA Serie
14. Testing Governor Lever
Assembly
Movement
Position
the cam in the top dead end position,
and
manually check governor lever assembly
(control sleeve) movement. Perform this test
over
the entire cam profile.
Fig.
21
Blind
plug
Suction
inlet
663
--
Fig.
22
15.
Air-tightness
Test
After completion of assembly, perform an air-
tightness test as described below.
a) Tightly screw in the pump cover overflow
outlet plug
(with
a gasket).
b) Supply
compressd
air [approx.0.39MPa(4 kgf
/cm
2
)]
to the pump through the suction inlet.
c) Immerse the pump in light oil.
d)
Check
for bubbles indicating pump leakage
(particularly at the drive shaft oil seal).
16.
Handling
of O-Rings
a) Rubber O-rings must be stored unex-
panded.
b) When reassembling the pump after test
immersion or actual use, replace all O-rings.
3-1-51
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