1995 ISUZU TROOPER Workshop Manual

Fig. 6A-32
Fig. 6A-33
NOTE:
Do not turn the camshaft.
~~~5) Remove the cam brackets and measure the
plastigage at its widest point (Fig. 6A-34).
Replace the cylinder head and/or the
camshaft
if the clearance exceeds the
specified
limit.
6) Clean the plastigage from the camshaft and
the cam brackets.
5. Measure the camshaft thrust clearance.
(SOHC)
~1) Carefully clean the camshaft journal the
camshaft bracket housing and the
cylinder
head.
2) Install camshaft with camshaft bracket
housing on
cylinder head.
3) Tighten camshaft bracket housing fixing
bolts in sequence in illustration (Fig. 6A-35).
~~~ Torque N·m (lb·in)
N·m (lb·ft) M6:
M8:
8 (69)
18 (13)
GENERAL ENGINE MECHANICAL 6A-13
Oil
Clearance
15 12
Standard
0.050-0.100
(0.00197-0.00394)
Fig. 6A-34
7
mm (in)
Limit
0.5 (0.0059)
4 10
13 14 \-.:._9 __ 8 ___ 2 ---~_=.3 _ ___:6::__--=.5 1 11
M6 Bolts
Fig. 6A-35
4) Install thrust plate and tighten it to the specified
torque.
1~1 Torque N·m (lb·in) I 10 (87)
5) Measure the camshaft thrust clearance with a dial
indicator. Replace the camshaft and/or the
cylinder head if the camshaft thrust clearance
exceeds the specified limit (Fig. 6A-36).

6A-14 GENERAL ENGINE MECHANICAL
Camshaft thrust
Clearance
(DOHC}
Standard
0.07-0.20
(0.0028-0.0079)
Fig. 6A-36
mm (in)
Limit
0.25 (0.0098)
1) Carefully clean the camshaft journal, the cam
brackets, and the
cylinder head.
2) Place the camshaft on the cylinder head.
3) Tighten camshaft bracket housing fixing bolts in
sequence in
illustration (Fig. 6A-37).
~~~ Torque N·m (lb·in) 10 (87)
Q : Intake side O : Exhaust side
Fig. 6A-37
4) Measure the camshaft thrust clearance with a dial
indicator. Replace the camshaft and/or the
cylinder head if the camshaft thrust clearance
exceeds the specified limit (Fig. 6A-38).
mm (in)
Standard Limit
Camshaft thrust 0.05-0.15 0.20 (0.0079)
clearance (0.0020-0.0059)
l•!•l REASSEMBLY
(SOHC}
Fig. 6A-38
7. Camshaft bracket housing
• Install camshaft bracket housing on camshaft.
NOTE:
Take care not to install wrong camshaft bracket
housing.
5. Camshaft
• Remove any oil on cylinder head and front, rear
camshaft bracket housing.
• Apply engine oil to camshaft journal.
• Install
camshaft with camshaft bracket.
4. Camshaft bracket housing fixing bolts
1) Apply sealant (TB-12078 or equivalent) to
contact surfaces
of cylinder head with front
and rear camshaft bracket housing as shown
in Fig. 6A-39.
2) Tighten camshaft bracket housing fixing bolts
in sequence in illustration (Fig. 6A-40)
~~~ Torque N·m (lb·in)
N·m (lb·ft) M6:
M8:
Sealant application points
Fig. 6A-39 8
(69)
18 (13)
•

15 12 7 4 10
13 14 -.:9:...._--=8 __ =-2 ---..-....::3:.__ _ _:6:___:::..~5 11
M6 Bolts
Fig. 6A-40
3. Thrust plate
• Tighten the bolts
~~~ Torque N·m (lb·in) 10 (87)
6. Oil
seal and camshaft end plug
1~·1 Apply engine oil to the camshaft oil seal lip and
install new camshaft oil seal (Fig. 6A-41).
1®-1 Camshaft oil seal Installer: J-39203
Fig. 6A-41
2. Front plate
1. Camshaft timing pulley
• Tighten the camshaft timing pulley fixing bolts
1~1 Torque N·m (lb·ft) 63 (46)
(DOHC)
5. Camshaft
• Install camshaft with chain and chain tensioner.
NOTE:
Install a retainer on the tensioner as shown in Fig. 6A-
42 to prevent plunger from moving and remove it after
securely
installing camshaft.
GENERAL ENGINE MECHANICAL 6A-15
~1)
2)
u
Fig. 6A-42
Apply engine oil sufficiently to the following
points.
1 Camshaft journal
2 Camshaft sprocket
Install camshaft on cylinder head.
1 Align sprocket
timing mark to chain timing
mark (Fig. 6A-43).
2 Take care
not to install wrong chain
tensioners,
as left and right tensioners are
different from each other.
The tensioners are marked either R (right)
or L (left) (Fig. 6A-44).
Timing mark
Fig. 6A-43
4. Chain tensioner fixing bolts
• Tighten the bolts.
1~1 Torque N·m (lb·ft) 19 (14)
3. Camshaft brackets
m 1) Remove any oil from the contact surfaces on
Lll the intake and exhaust sides of #1 and #6
camshaft bearing caps on the cylinder head.
~~~2) Apply sealant (TB-12078 or equivalent) to
contact surfaces of cylinderhead with # 1 and
#6 camshaft bracket as shown in Fig. 6A-45.

6A-16 GENERAL ENGINE MECHANICAL
Left side Right side
Moving side Positioning
Q : Intake side 0 : Exhaust side
Fig. 6A-44 Fig. 6A-46
Sealant application points
Fig. 6A-45
7 CAUTION:
'VI Do not apply an excessive amount of sealant to
the contact surface. Applying too much sealant
will result
in the coating overflowing the contact
surfaces. This
could cause serious damage to the
engine.
3)
4)
w·
•
Mount the camshaft bracket on the cylinder
head.
Tighten camshaft bracket
bolts in sequence,
as shown in the illustration (Fig. 6A-46).
The
"E" mark is applied to the camshaft bracket
exhaust side and, on the other hand, the
"I"
mark is applied to the intake side. Install the
camshaft bracket in the
numerical order (1, 2, 3,
4, 6) from the camshaft end without the
sprocket.
The camshaft bracket
arrow marks must be
pointing towards the camshaft end
without the
sprocket.
~~~ Torque N·m (lb·in) f 10 (87)
6. Oil seal and camshaft end plug
CJ Apply engine oil to th~ camsh~ft oil seal lip and
L.::::J install new camshaft oil seal (F1g. 6A-47.)
1®..1 Camshaft oil seal Installer: J-39203
Fig. 6A-47
2. Front plate
1. Camshaft timing pulley
• Install
the camshaft timing pulleys.
NOTE:
• Prevent the camshaft from turning by using an open
end wrench
as shown in the illustration (Fig. 6A-48).
Tighten the
pulley bolts.
~~~ Torque N·m (lb·ft) 63 (46)
Fig. 6A-48
•