Mitsubishi Montero (2004+). Manual - part 116

ROCKER ARMS AND CAMSHAFT

TSB Revision

ENGINE OVERHAUL

11B-23

ROCKER ARMS AND CAMSHAFT

REMOVAL AND INSTALLATION

M1113005400552

AK301877AB

1

APPLY ENGINE OIL
TO ALL MOVING
PARTS BEFORE
INSTALLATION.

2

7

8

11

10

12

13

14

15

16

17

18

19

31 ± 3 N·m
23 ± 2 ft-lb

13 ± 2 N·m
113 ± 17 in-lb

3.4 ± 0.5 N·m
26 ± 4 in-lb

10

10

11

11

14

14

5

4

3

9

6

10 ± 2 N·m
87 ± 17 in-lb

REMOVAL STEPS

1. OIL FILLER CAP
2. PCV VALVE
3. PCV VALVE HOSE
4. ROCKER COVER
5. ROCKER COVER GASKET
6. OIL SEAL

>>C<<

7. CAMSHAFT OIL SEAL

<<A>>

8. ROCKER ARMS AND SHAFT

<<A>>

9. ROCKER ARMS AND SHAFT
10. ROCKER ARM A

11. ROCKER ARM B
12. ROCKER ARM SHAFT

>>B<<

13. LASH ADJUSTER
14. ROCKER ARM C
15. ROCKER ARM SHAFT

>>B<<

16. LASH ADJUSTER
17. THRUST CASE 

 (RIGHT BANK ONLY)

18. O-RING (RIGHT BANK ONLY)

>>A<<

19. CAMSHAFT

REMOVAL STEPS (Continued)

ROCKER ARMS AND CAMSHAFT

TSB Revision

ENGINE OVERHAUL

11B-24

Required Special Tools:

• MB991559: Camshaft Oil Seal Installer Adapter

• MD998442: Air Bleed Wire

• MD998443: Lash Adjuster Holder

• MD998713: Camshaft Oil Seal Installer

REMOVAL SERVICE POINT

.

<<A>> ROCKER ARMS AND SHAFT REMOVAL

CAUTION

If the lash adjuster is re-used, clean the lash adjuster. 
(Refer to lash adjuster inspection 

P.11B-25

.)

Set special tool MD998443 to prevent the lash adjuster coming 
from free and falling to the floor.

INSTALLATION SERVICE POINTS

.

>>A<< CAMSHAFT INSTALLATION

CAUTION

Use care to prevent confusion of the right and left bank 
camshafts.
1. Apply engine oil to the camshaft journals and cams and then 

install the camshafts.
NOTE: The right bank camshaft is identified by a slit 4 mm 
(0.16 inch) wide at the rear end of the camshaft.

2. Check to see that the dowel pin of the camshaft is located at 

the position shown.

.

AKX00613AB

MD998443

AKX00637

SLIT (RIGHT BANK ONLY)

AB

AK201084

APPROXI-
MATELY
126˚

RIGHT BANK

LEFT BANK

APPROXI-
MATELY
70˚

AB

ROCKER ARMS AND CAMSHAFT

TSB Revision

ENGINE OVERHAUL

11B-25

>>B<< LASH ADJUSTER INSTALLATION

CAUTION

If the lash adjuster is re-used, clean the lash adjuster. 
(Refer to lash adjuster inspection 

P.11B-25

.)

Fit the lash adjuster onto the rocker arm without allowing diesel 
fuel to spill out. Fit special tool MD998443 to prevent the lash 
adjuster coming from free and falling to the floor.

.

>>C<< CAMSHAFT OIL SEAL INSTALLATION
Use special tools MD998713 and MB991559 to install the cam-
shaft oil seal.

INSPECTION

M1113005500300

.

ROCKER ARM SHAFT
Check the rocker arm mounting areas of the rocker arm shafts 
for wear or damage. Replace as necessary.

.

AKX00715

MD998443

LASH
ADJUSTER

AB

AKX00615

<RIGHT BANK SIDE>

MD998713

AB

AKX00639

<LEFT BANK SIDE>

MB991559

AB

MD998713

ROCKER ARMS AND CAMSHAFT

TSB Revision

ENGINE OVERHAUL

11B-26

ROCKER ARM
1. Check the roller surface and replace the rocker arm if 

recesses, damage or heat seizure is observed.

2. Check roller rotation and replace the rocker arm if uneven 

rotation or roller backlash of the roller is observed.

3. Check the inside diameter and replace the rocker arm if 

damage or seizure is observed.

.

CAMSHAFT
1. Check the camshaft bearing journals for damage and 

binding. If the journals are binding, check the cylinder head 
for damage. Also check the cylinder head for clogged oil 
holes.

2. Check the tooth surface of the distributor drive gear teeth of 

the camshaft and replace if abnormal wear is evident.

3. Check the cam surface for abnormal wear and damage and 

replace if necessary. Also measure the cam height and 
replace if out of minimum limit.

Standard value:
Intake 37.39 mm (1.472 inches)
Exhaust 37.14 mm (1.462 inches)
Minimum limit:
Intake 36.89 mm (1.452 inches)
Exhaust 36.64 mm (1.443 inches)

.

LASH ADJUSTERS

CAUTION

• The lash adjusters are precision-engineered mecha-

nisms. Do not allow them to become contaminated by 
dirt or other foreign substances.

• Do not attempt to disassemble the lash adjusters.
• Use only fresh diesel fuel to clean the lash adjusters.

1. Prepare three containers and approximately 5 dm

3

 (30.5 

quart) of diesel fuel. Into each container, pour enough diesel 
fuel to completely cover a lash adjuster when it is standing 
upright. Then, perform the following steps with each lash 
adjuster.

AKX00723

ROLLER TIP

AB

AKX00685

AKX00625

OUTSIDE
CLEANING

INSIDE
CLEANING

FILLING
DIESEL FUEL

A

B

C

AB