Mitsubishi Galant (2004+). Manual - part 605

CYLINDER HEAD AND VALVES

TSB Revision

ENGINE OVERHAUL <3.8L ENGINE>

11D-37

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 cylin-
der head top surface.
NOTE: After installing the valve guides, insert new valves in 
them to check for sliding condition.

AKX00727

14 mm 
(0.55 in)

AB

OIL PAN AND OIL PUMP

TSB Revision

ENGINE OVERHAUL <3.8L ENGINE>

11D-38

OIL PAN AND OIL PUMP

REMOVAL AND INSTALLATION

M1113008100420

Required Special Tool

• MD998054: Oil Pressure Switch Socket Wrench

• MD998717: Crankshaft Front Oil Seal Installer

AK302971

14 ± 1 N·m
122 ± 9 in-lb

10 ± 2 N·m
87 ± 17 in-lb

19 ± 3 N·m
14 ± 2 ft-lb

11 ± 1 N·m
95 ± 9 in-lb

39 ± 5 N·m
29 ± 4 ft-lb

9.0 ± 3.0 N·m
80 ± 26 in-lb

10.8 ± 0.9 N·m
96 ± 7 in-lb

9.0 ± 3.0 N·m
80 ± 26 in-lb

9.0 ± 2.0 N·m
80 ± 17 in-lb

44 ± 5 N·m
33 ± 4 ft-lb

23 ± 3 N·m
18 ± 2 ft-lb

10 ± 2 N·m
87 ± 17 in-lb

41 ± 8 N·m
30 ± 6 ft-lb

4

3

1

2

17

7

5

9

8

10

6

14

13

12

11

14 ± 2 N·m
122 ± 17 in-lb

20

19

18

21

22

23

11 ± 1 N·m
95 ± 9 in-lb

15

16

AC

APPLY ENGINE OIL
TO ALL MOVING
PARTS BEFORE
INSTALLATION.

REMOVAL STEPS

1. DRAIN PLUG

>>H<<

2. DRAIN PLUG GASKET

<<A>> >>G<<

3. OIL PAN, LOWER
4. COVER

<<B>> >>F<<

5. OIL PAN, UPPER
6. OIL SCREEN
7. OIL SCREEN GASKET
8. BAFFLE PLATE

>>E<<

9. ENGINE OIL PRESSURE SWITCH
10. OIL FILTER COVER

>>D<<

11. OIL FILTER
12. OIL FILTER BRACKET

13. OIL FILTER BRACKET GASKET
14. RELIEF PLUG
15. RELIEF SPRING
16. RELIEF PLUNGER

>>C<<

17. CRANKSHAFT FRONT OIL SEAL

>>B<<

18. OIL PUMP CASE ASSEMBLY
19. O-RING
20. OIL PUMP COVER

<<C>> >>A<<

21 OIL PUMP OUTER ROTOR

<<C>> >>A<<

22. OIL PUMP INNER ROTOR
23. OIL PUMP CASE

REMOVAL STEPS (Continued)

OIL PAN AND OIL PUMP

TSB Revision

ENGINE OVERHAUL <3.8L ENGINE>

11D-39

REMOVAL SERVICE POINT

.

<<A>> OIL PAN, LOWER REMOVAL
1. Remove the lower oil pan mounting bolts.

CAUTION

Do not use a scraper or special tool to remove the oil pan.
2. Remove the lower oil pan by tapping on its side with a 

plastic hammer (mallet) through a wooden plank held 
against it.

.

<<B>> OIL PAN, UPPER REMOVAL
1. Remove the long bolts "A" shown in the illustration first.
2. Remove all other bolts.

CAUTION

Do not use a scraper or special tool to remove the oil pan.
3. Remove the oil pan.

4. Screw M10 bolts into the two bolt holes in the oil pan to 

break the joint and remove the oil pan.

.

<<C>> OUTER ROTOR/INNER ROTOR REMOVAL
Make alignment dots on the outer and inner rotors for ease of 
reassembly.

AK304454

"A"

AB

AKX00658

AKX00742AB

ALIGNMENT DOTS

OIL PAN AND OIL PUMP

TSB Revision

ENGINE OVERHAUL <3.8L ENGINE>

11D-40

INSTALLATION SERVICE POINTS

.

>>A<< INNER ROTOR/OUTER ROTOR INSTALLATION
Apply engine oil to the rotors. Then install the rotors, ensuring 
that the alignment dots made at disassembly are properly 
aligned.

.

>>B<< OIL PUMP CASE ASSEMBLY INSTALLATION
1. Clean the gasket mating surfaces of oil pump case and 

cylinder block.

2. Apply a 3 mm (0.1 inch) diameter bead of sealant 

(Mitsubishi Genuine Parts number MD970389 or equivalent) 
to the oil pump case.
Apply sealant as indicated by the broken line in the 
illustration; the grooves must be traced and the bolt holes 
must be surrounded with a bead of sealant.

3. Install the oil pump case assembly to the front of the cylinder 

block.
NOTE: Be sure to install the oil pump case quickly while the 
sealant is wet (within 15 minutes).

4. Tighten the oil pump case mounting bolts to the specified 

torque.

Tightening torque: 14 

± 1 N⋅m (122 ± 9 in-lb)

NOTE: After installation, keep the sealed area away from oil 
and coolant for approximately one hour.

.

>>C<< CRANKSHAFT FRONT OIL SEAL INSTALLATION 
1. Install the guide of special tool MD998717 to the front end of 

the crankshaft.

2. Apply engine oil to the lip area of a new oil seal and push it 

in until it contacts the oil pump case.

AKX00742AB

ALIGNMENT DOTS

AKX00674

BOLT HOLE

GROOVE

AB

AKX00659 AB

MD998717 (GUIDE)

OIL SEAL