Removal
4)
With hexagonal section (1) of intake camshaft (2) held stationary with spanner or the like, loosen mounting bolt of intake cam timing sprocket assembly (3) and remove it.
CAUTION:
•
Never attempt to loosen intake camshaft sprocket bolt with intake cam timing sprocket assembly held stationary. Failure to follow this could result in damage to lock pin.
•
Do not loosen bolt “a” because intake cam timing sprocket assembly is not serviceable.
5)
Loosen camshaft housing bolts in such order as indicated in figure and remove them.
6)
Remove camshaft housings.
7)
Remove intake and exhaust camshafts.
8)
Remove camshaft bearings (1) from cylinder head and camshaft No.1 housing.
9)
Remove tappets (2) with shims (1).
Installation
1)
Install tappets and shims to cylinder head.
Apply engine oil around tappet, and then install it to cylinder head.
NOTE:
When installing shim, make sure to direct shim No. side toward tappet.
2)
Install camshaft bearings (1) to cylinder head and camshaft No.1 housing.
CAUTION:
Do not apply engine oil to camshaft bearing back.
Only a upper half bearing of intake camshaft bearing No.1 has some holes.
3)
Install intake camshaft (1) and exhaust camshaft (2).
Align knock pin (3) and match mark (4) with notches (5) as shown in the figure.
4)
Apply engine oil to sliding surface of each camshaft and camshaft journal, then install them as shown in figure.
5)
Install camshaft housing pins (1) as shown in figure.
6)
Check position of camshaft housings.
Embossed marks are provided on each camshaft housing, indicating position and direction for installation. Install housings as indicated by these marks.
A:
|
I: Intake side or E: Exhaust side
|
B:
|
Position from timing chain side
|
C:
|
Pointing to timing chain side
|
7)
After applying engine oil to housing bolts, tighten them temporarily first. Then tighten them by the numerical order in figure. Tighten a little at a time and evenly among bolts and repeat tightening sequence two or three times before they are tightened to specified torque.
Tightening torque
Camshaft housing bolts
(
a
):
11
N·m (
1.1
kg-m,
8.0
lb-ft)
8)
With hexagonal section (1) of intake camshaft (2) held stationary with spanner or the like, tighten bolt of intake cam timing sprocket assembly (3) to specification.
Tightening torque
Intake cam timing sprocket bolts
(
a
):
60
N·m (
6.0
kg-m,
43
lb-ft)
16)
Refill cooling system with coolant, engine with engine oil and A/T with specified A/T fluid (vehicle with A/T).
17)
Verify that there is no coolant leakage, oil leakage and A/T fluid leakage (vehicle with A/T) at each connection.