Valve and Cylinder Head Disassembly and Reassembly
Valves and Cylinder Head Disassembly and ReassemblyReference: Valve and Cylinder Head Removal and Installation:N32A
Disassembly
1) Place disassembled parts except valve stem seal in order so that they can be installed in their original positions.
2) For ease in servicing cylinder head, remove ECT sensor, spark plug, exhaust manifold from cylinder head.
3) Using special tools (Valve lifter) as shown in figure [A] or [B], compress valve spring and then remove valve cotters using special tool (Forceps).
Special Tool
(A): 09916-14510
(B): 09916-14530
(C): 09916-84511
Special Tool
(D): Off-vehicle valve spring compressor adapter (EN-46119)
(E): Valve stem key remover / installer (EN-46117)
(F): Valve spring compressor head off (J-8062)
4) Release special tools (Valve lifter), and remove valve spring retainer (1) and valve spring (2).
5) Remove valve (1) from cylinder block.
6) Remove valve stem seal (1).
Special Tool
(A): 09917-97810
7) If necessary, remove oil relief valve as follows.
CAUTION: After removing oil relief valve, clean dust from cylinder block.
a) Using special tool, cut down upper part of oil relief valve up to the extent that the ball in the valve can be removed.
Special Tool
(A): 09917-66520
b) Remove check ball and spring from oil relief valve.
c) Using special tool, tap the threads of oil relief valve.
Special Tool
(A): 09917-66520
d) Using special tool, Remove oil relief valve from cylinder head.
Special Tool
(A): 09921-96010
Reassembly
1) Using special tool, Install new oil relief valve to cylinder head.
Special Tool
(A): 09917-66520
2) After applying engine oil to new valve stem seal (1), install valve stem seal to valve guide by pushing special tool by hand. After installing, check to be sure that valve stem seal is properly fixed to valve guide.
CAUTION: When installing, never tap or hit special tool with a hammer or else. Install valve stem seal to valve guide only by pushing special tool by hand. Tapping or hitting special tool may cause damage to valve stem seal.
Special Tool
(A): 09917-97810
3) Apply engine oil to valve stem seal and valve guide hole.
4) Install valve spring and valve spring retainer. Each valve spring has top end (small-pitch (1)) and bottom end (large-pitch (2)). Be sure to position spring in place with its bottom end (large-pitch) facing the bottom (valve stem seal side).
5) Using special tools (Valve lifter) as shown in figure [A] or [B], compress valve spring and fit two valve cotters (1) into groove in valve stem.
CAUTION: Do not compress valve spring by 24 mm (0.94 in.) or more.
Special Tool
(A): 09916-14510
(B): 09916-14530
(C): 09916-84511
Special Tool
(D): Off-vehicle valve spring compressor adapter (EN-46119)
(E): Valve stem key remover / installer (EN-46117)
(F): Valve spring compressor head off (J-8062)
6) Install ECT sensor.
7) Install spark plugs.
8) Install exhaust manifold.