Cleaning
Use an acetylene torch tip cleaner or equivalent that is 1.0
mm [0.040-inch] or less in diameter to clean the orifice.
NOTE: The diameter of the orifice is 1.0 mm [0.040-inch]. Do
not attempt to drill out the orifice or use a larger diameter
wire to clean the orifice.
Use solvent and an air solvent gun to wash the debris
from the orifice and the pressure regulator bore in the
lubricating oil pump.
Caution: Wear safety goggles when using an air solvent
gun to prevent possible injury.
Clean the inside of the signal line and the 7/16-20 UNF
straight thread with o-ring seal adapter with solvent and
an air solvent gun.
Installation
Install the main oil pressure regulator. Refer to Procedure
2-15.
Install the 7/16-20 UNF straight thread with o-ring seal
adapter, in the lubricating oil pump front cover.
Torque Value: 17 N•m [150 in-lb]
Install the DFC signal line.
Operate the engine until the water temperature reaches
82°C [180°F], and check the oil pressure.
NOTE: If the oil pressure problem still exists or occurs again
soon after the above procedure has been completed, re-
move the lubricating oil pump for disassembly and a thor-
ough cleaning. Refer to Procedure 2-13.
Lubricating Oil Pump Signal Line Orifice (In Chassis) (2-17) Section 2 - Lubricating System
N14Page 2-42
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