Disassembly
Disassembly
1. Remove the roller finger follower and the hydraulic lash adjuster assembly (A).
2. Remove the valves.
(1) Using the SST(09222-3K000, 09222-3C300), compress the valve spring and remove retainer lock.
(2) Remove the spring retainer.
(3) Remove the valve spring.
(4) Remove the valve.
(5) Using the SST(09222-29000), remove the valve stem seal (A).
NOTE:
Do not reuse old valve stem seals.
3. Remove the OCV filter(A).
[LH]
[RH]
4. Remove the pressure relief valve.
(4) Install the bearing cap (A) and thrust bearing cap (B) with specified torque.
Tightening torque :
1st step :
6.9 - 7.8N.m ( 0.7 - 0.8kgf.m, 5.1 - 5.8lb-ft)
2nd step :
13.7 - 14.7N.m (1.4 - 1.5kgf.m, 10.1 - 10.8lb-ft)
NOTE:
Do not turn the camshaft.
[LH]
[RH]
(5) Remove the bearing caps.
(6) Measure the plastigage at its widest point.
Camshaft bearing oil clearance
Intake/Exhaust :
No.1 journal :
0.025 - 0.057mm (0.0010 - 0.0022in)
No.2, 3, 4, 5 journal :
0.020 - 0.057mm (0.0008 - 0.0022in)
Camshaft journal outer diameter
Intake/Exhaust :
No.1 journal :
35.964 - 35.980mm (1.4159 - 1.4165in)
No.2, 3, 4, 5 journal :
25.964 - 25.980mm (1.0222 - 1.0228in)
Camshaft journal bore inner diameter
Intake/Exhaust :
No.1 journal :
36.005 - 36.021mm (1.4175 - 1.4181in)
No.2, 3, 4, 5 journal :
26.000 - 26.021mm (1.0236 - 1.0244in)
If the oil clearance is greater than maximum, replace the camshaft. If necessary, replace cylinder head.
(7) Completely remove the plastigage.
(8) Remove the camshafts.
3. Inspect the camshaft end play.
(1) Install the camshafts.
(2) Install the bearing cap (A) and thrust bearing cap (B) with specified torque.
Tightening torque :
1st step :
6.9 - 7.8N.m ( 0.7 - 0.8kgf.m, 5.1 - 5.8lb-ft)
2nd step :
13.7 - 14.7N.m (1.4 - 1.5kgf.m, 10.1 - 10.8lb-ft)
(3) Using a dial indicator, measure the end play while moving the camshaft back and forth.
Camshaft end play :
RH-In : 0.12 - 0.22mm (0.0047 - 0.0086in)
RH-Ex, LH-In, LH-Ex :
0.1 - 0.2mm (0.0039 - 0.0079in)
If the end play is greater than maximum, replace the camshaft. If necessary, replace cylinder head.
(4) Remove the camshafts.
CVVT Assembly
1. Inspect the CVVT assembly.
(1) Check that the CVVT assembly will not turn.
(2) Apply vinyl tape to the retard hole except the one indicated by the arrow in the illustration.
(3) Apply vinyl tape to the advance hold except the one indicated by the arrow in the illustration.
(4) Wrap tape around the tip of the air gun and apply air of approx. 150kpa(1.5kgf/cm2, 21psi) to the port of the camshaft. (Perform this in order to release the lock pin for the maximum default angle locking.)
In-default :Max retard
Ex-default :Max advance
NOTE:
When the oil splashes, wipe it off with a shop rag.
(5) Under the condition of (3), turn the In-CVVT assembly to the advance angle side (the arrow marked direction in the illustration) with your hand.
Depending on the air pressure, the In-CVVT assembly will turn to the advance side without applying force by hand.
Under the condition of (3), turn the Ex-CVVT assembly to the retard angle side (the arrow marked direction in the illustration) with your hand.
Depending on the air pressure, the Ex-CVVT assembly will turn to the retard side without applying force by hand.
(6) Except the position where the lock pin meets at the maximum default angle, let the CVVT assembly turn back and forth and check the movable range and that there is no interference.
Standard :
Movable smoothly in the range about 45°
(7) Turn the In-CVVT assembly with your hand and lock it at the maximum retard angle position (clockwise).
Turn the Ex-CVVT assembly with your hand and lock it at the maximum advance angle position.
HLA (Hydraulic Lash Adjuster)
With the HLA filled with engine oil, hold A and press B by hand. If B moves, replace the HLA.
