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Measure the clearance between the valve guide and valve stem. If the limit is
exceeded, replace the valve guide, valve, or both.
Standard value:
< Intake > 0.02 - 0.05 mm (0.0008 - 0.0019 inch)
< Exhaust > 0.04 - 0.06 mm (0.0016 - 0.0023 inch)
Limit:
< Intake > 0.10 mm (0.003 inch)
< Exhaust > 0.15 mm (0.005 inch)
Fig. 86: Measuring Clearance Between Valve Stem And Vale Guide
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
VALVE SEAT Assemble the valve, then measure the valve stem
projection between the end of the
2004 Mitsubishi Endeavor Limited 2004 ENGINE Engine Overhaul - Endeavor
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valve stem and the spring seating surface. If the measurement exceeds the specified
limit, replace the valve seat.
Standard value:
< Intake > 48.30 mm (1.902 inches)
< Exhaust > 51.71 mm (2.036 inches)
Limit:
< Intake > 48.80 mm (1.921 inches)
< Exhaust > 52.21 mm (2.056 inches)
Fig. 87: Measuring Valve Stem Projection
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
2004 Mitsubishi Endeavor Limited 2004 ENGINE Engine Overhaul - Endeavor
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VALVE SEAT RECONDITIONING PROCEDURE1. Correct to that the valve seat width and angle are as specified in the illustration.
Fig. 88: Identifying Valve Seat Specifications
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
2. After correcting the valve seat, lap the valve and valve seat using lapping
compound. Then, check the valve stem projection.
VALVE SEAT REPLACEMENT PROCEDURE
CAUTION: Before correcting the valve seat, check the clearance
between the valve guide and valve and, if necessary,
replace the valve guide.CAUTION: Before replacing the valve seat, check the valve
guide and, if necessary, replace the valve guide.
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1. Cut the valve seat from the inside to thin the wall thickness. Then, remove the
valve seat.
Fig. 89: Cutting Valve Seat
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
2. Rebore the valve seat hole in the cylinder head to a selected oversize valve seat
diameter.
SEAT RING HOLE DIAMETER:
Intake valve
0.3 oversize 37.80 - 37.83 (1.4882 - 1.4894 inches)
0.6 oversize 38.10 - 38.13 mm (1.5000 - 1.5012 inches)
Exhaust valve
0.3 oversize 34.80 - 34.83 mm (1.3701 - 1.3713 inches)
2004 Mitsubishi Endeavor Limited 2004 ENGINE Engine Overhaul - Endeavor
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0.6 oversize 35.10 - 35.13 mm (1.3819 - 1.3831 inches)
Fig. 90: Inspecting Seat Ring Hole Diameter
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
3. Before fitting the valve seat, either heat the cylinder head up to approximately
250°C (482°F) or cool the valve seat in liquid nitrogen, to prevent the cylinder
head bore from galling.
4. Using a valve seat cutter, correct the valve seat to the specified width and
angle. Using a valve seat cutter, correct the valve seat to the specified width
and angle. See "VALVE SEAT RECONDITIONING PROCEDURE
" on
the
previous
page.
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VALVE GUIDE REPLACEMENT PROCEDURE1. Remove the snap ring from the exhaust valve guide.
2. Using a press, remove the valve guide toward the cylinder head gasket surface.
Fig. 91: Identifying Valve Guide Replacement Procedure
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
3. Re-bore the valve guide hole of the cylinder head so that it fits the press-fitted
oversize valve guide.
Valve Guide Hole Diameter:
CAUTION: Do not install a valve guide of the same size
again.
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0.05 oversize 11.05 - 11.07 mm (0.4350 - 0.4358 inch)
0.25 oversize 11.25 - 11.27 mm (0.4429 - 0.4437 inch)
0.50 oversize 11.50 - 11.52 mm (0.4528 - 0.4535 inch)
Fig. 92: Measuring Valve Guide
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
4. Install the new snap ring into the groove of exhaust valve guide.
5. Press-fit the valve guide until it protrudes 14 mm (0.55 inch) from the cylinder
head top surface as shown in the illustration.
NOTE: When press-fitting the valve guide, work from the cylinder
head top surface.
NOTE: After installing the valve guides, insert new valves in them
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OIL PAN AND OIL PUMP REMOVAL AND INSTALLATION Fig. 93: Removing/Installing Oil Pan And Oil Pump
to check for sliding condition.
2004 Mitsubishi Endeavor Limited 2004 ENGINE Engine Overhaul - Endeavor