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Service Manual Mitsubishi SL-Series diesel engines
Version 08/2004
INSPECTION
ENGLISH
LUBRICATION SYSTEM
LUBRICATION SYSTEM
37 INSPECTION
37.1 Oil pump
Visually check the pump for rough rotation or other
defects. Replace the pump assembly if defective.
37.2 Oil pressure switch
1. Test for continuity between the terminal and body
with an ohmmeter as shown in the illustration. No
continuity is the cause for replacing the switch.
2. Insert a small diameter bar into the oil hole in the
switch and lightly push it in to test for no continuity
as shown in the illustration. Any continuity is the
cause for replacing the switch.
3. Apply a pressure air of 0.5 kgf/cm
2
(7 psi) [49 kPa]
to the switch through the oil hole to test for no
continuity. Any continuity is the cause for replacing
the switch. Also, check for air leaks. Any air leak
is an indication of a ruptured diaphragm. In such a
case, replace the switch.
Figure 210 Checking oil pump
Figure 211 Testing oil pressure switch (1)
Figure 212 Testing oil pressure switch (2)
Small diameter bar
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