Oil Pressure Switch Removal; Crankshaft Oil Clearance; Cylinder Block - Mitsubishi 4G1 series Workshop Manual

4G1 ENGINE (E - W) -
MD998054
Plastic
gauge
E
E
Mitsubishi Motors Corporation
Mitsubishi Motors Corporation
REMOVAL SERVICE POINTS
AA" OIL PRESSURE SWITCH REMOVAL
(1) Disconnect the oil pressure switch terminals.
(2) Using the special tool, remove the oil pressure switch.
INSPECTION

1. CRANKSHAFT OIL CLEARANCE

(1) Wipe all oil off the crankshaft journal and the bearing's
(2) Install the crankshaft.
(3) Cut the plastic gauge such that its length matches the
6EN0550
(4) Gently fit the crankshaft bearing cap and tighten the bolts
(5) Remove the bolts and gently remove the crankshaft
(6) Using the scale printed on the plastic gauge bag, measure
1EN0271
NOTE
Fillet-rolled section
The crankshaft pins and journals are fillet-rolled and must
not be machined to undersize dimensions.

2. CYLINDER BLOCK

(1) Visually check for cracks, rust, and corrosion, and inspect
(2) Ensure that the top surface is free of gasket chips and
(3) Check the cylinder walls for cracks and seizure marks.
Nov. 1995
Dec. 1998
Crankshaft and Cylinder Block
Caution
The thread is coated with sealant. Take care not to
bend it when removing the oil pressure switch.
The crankshaft oil clearance can be measured easily
using a plastic gauge.
To check the crankshaft oil clearance with a plastic gauge,
carry out the following procedure:
inside surface.
width of the bearing, then place it on the journal along
the journal's axis.
to the specified torque.
bearing cap.
the plastic gauge's crushed section at its widest point.
Standard value: 0.02 - 0.04 mm
Limit: 0.1 mm
the cylinder block using a flaw detecting agent. Rectify
defects where possible or replace the cylinder block.
other foreign material. Check the cylinder block's top
surface for distortion using a straight edge and thickness
gauge.
Standard value: 0.05 mm
Limit: 0.1 mm
If defects are evident, bore all the cylinders to oversize
or replace the cylinder block.
PWEE9520
PWEE9520-A
11A-12-3
Revised