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ENGINE OVERHAUL Exhaust Manifold
REMOVAL AND INSTALLATION
3022
1410
28
14
Removal steps
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ENGINE OVERHAUL Exhaust Manifold and.
WATER ,
(1) Wet the O-ring (with
Caution
Keep the O-ring free of oil or grease.
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ENGINE OVERHAUL Rocker Arms
REMOVAL AND INSTALLATION
3.32.4
6
2
R e m o v a l s t e p s
2.
4.
6. 7 .
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ENGINE OVERHAUL Rocker Arms and Camshaft
R E M O V A L S E R V I C E
ARMS AND ARM
REMOVAL.
Before removing rocker arms and shafts assembly, install
the special tool as illustrated to prevent adjuster from dropping.
INSTALLATION SERVICE POINTS
LASH ADJUSTER INSTALLATION
(1) Immerse the’ lash adjuster in clean diesel fuel .
(2) Using a special tool, move the plunger up and d own
4 or 5 times while pushing down lightly on the chec k
bail in order to bleed out the air.
(3)
the lash adjuster to rocker arm, being careful not
to spill the diesel fuel. Then use the special tool to prevent
adjuster from falling while installing it.
ARMS AND
ROCKERARM SHAFT
(1) Temporarily tighten the rocker the bolt so that
all rocker arms on the inlet valve side do not push the
valves.
(2) Fit the rocker shaft spring from the above and position
it so that it is right angles to the plug
NOTE
Install the rocker shaft spring before installing t he exhaust
side rocker arms and ‘rocker arm shaft.
Remove the special tool for securing the lash adjus ter.
Make sure that the notch in the rocker arm shaft is in
the direction as illustrated.
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ENGINE OVERHAUL Rocker Arms
CAMSHAFT OIL .
. .
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ENGINE OVERHAUL Rocker Arms Camshaft
I
INSPECTION
CAMSHAFT.
(1) Measure the cam height. Standard
Intake 37.39 mm (1.4720
Exhaust 37.47 mm (1.4752
Limit:
Intake 36.69 mm (1.4524 in.)
Exhaust 36.97 mm (1.4655 in.)
NOTE
The camshaft identification mark is stamped on the
opposite end of the camshaft sprocket side.
ROCKER ARM
(1) Check the roller surface. If any dents, damage or seizure
is evident, replace the rocker arm.
(2) Check rotation of the roller. If it does not rotate smoothly
or if looseness is evident, replace the rocker arm.
(3) Check the inside diameter. If damage or seizure is evident,
replace the rocker arm.
LASH ADJUSTER LEAK-DOWN TEST
Caution
1. The lash adjuster is a precision part. Keep it f ree
from dust and other foreign matter.
2. Do not disassemble lash adjuster.
3. When cleaning lash adjuster, use clean diesel fu el
only.
Use of the special tool helps facilitate the air bleeding.
of the rocker arm mounted type lash adjuster.
(3) Remove the special tool and press the plunger. If the
plunger is hard to be pushed in, the lash adjuster is normal.
Ifthe plunger can be pushed in all the way readily, bleed
the lash adjuster again and test again. If the plun ger
is still loose, replace the lash adjuster.
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(1) Immerse the lash adjuster in clean diesel fuel. .
(2)While lightly pushing down inner steel ball using t he special
tool, move the plunger up and down four or five tim es
to bleed air.
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ENGINE OVERHAUL Rocker and Camshaft
Caution
Upon completion of air bleeding’
upright to prevent inside’ diesel
(4) After air bleeding, set lash adjuster on the special tool
(Leak down tester).
(5) After plunger has gone down somewhat
mm),
measure time taken for it to go down 1.
Replace
if measured time is out of
Standard value: seconds 1 mm in.)
[Diesel fuel at
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11ENGINE OVERHAUL Cylinder Head
CYLINDER HEAD AND VALVES
REMOVAL AND INSTALLATION2 - ,
10
Removal steps
1. Cylinder head bolt
2. Cylinder head assembly
3. Cylinder head gasket 4. Retainer lock5. Valve spring
retainer 6. Valve spring7. Intake valve
8. Retainer lock 9. Valve springretainer 10. Valve spring ii. Exhaust valve
12. Valve stem seal
13. Valve spring seat
14. Valve stem Seal
15. Valve spring seat
16. Intake valve guide
17. Exhaust valve guide
18. Intake valve seat
19. Exhaust valve seat
20. Cylinder head
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