Disassembly

CYLINDER HEAD

COMPONENTS:

DISASSEMBLY

1. REMOVE NO. 1 TAPER SCREW PLUG
a) Using a 10 mm hexagon wrench, remove the taper screw plug and gasket.
2. REMOVE VALVE LIFTER

HINT: Keep the valve lifters in the correct order so they can be returned to the original locations when reassembling.

3. REMOVE OIL CONTROL VALVE FILTER
a) Using an 8 mm hexagon wrench, remove the taper screw plug.
b) Remove the filter and gasket.

4. REMOVE INTAKE VALVE
a) Using SST, compress the valve spring and remove the 2 retainer locks, valve, retainer and valve spring.
SST 09202-70020 (09202-00010)

HINT: Keep the valves, valve springs and spring retainers in the correct order so they can be returned to the original locations when reassembling.

5. REMOVE EXHAUST VALVE
a) Using SST, compress the valve spring and remove the 2 retainer locks, valve, retainer and valve spring.
SST 09202-70020 (09202-00010)

HINT: Keep the valves, valve springs and spring retainers in the correct order so they can be returned to the original locations when reassembling.

6. REMOVE VALVE STEM OIL SEAL
a) Using needle-nose pliers, remove the oil seal.

7. REMOVE VALVE SPRING SEAT
a) Using compressed air and a magnetic finger, remove the valve spring seat.

HINT: Keep the valve seats in the correct order so they can be returned to the original locations when reassembling.

8. REMOVE UNION
9. REMOVE STUD BOLT
a) Using E5 and E7 Torx sockets, remove the 7 stud bolts.

10. REMOVE CAMSHAFT BEARING CAP SETTING RING PIN

REPLACEMENT

1. REPLACE INTAKE VALVE GUIDE BUSH
a) Heat the cylinder head to 80 to 100°C (176 to 212°F).

b) Using SST and a hammer, tap out the guide bush.
SST 09201-10000 (09201-01050), 09950-70010 (09951-07100)

c) Using a caliper gauge, measure the bush bore diameter of the cylinder head.
Standard bore diameter

Standard bore diameter:

e) Using SST and a hammer, tap in a new guide bush to the specified protrusion height.
SST 09201-10000 (09201-01050), 09950-70010 (09951-07100)
Standard protrusion height: 9.0 to 9.4 mm (0.354 to 0.370 inch)

f) Using a sharp 5 mm reamer, ream the guide bush to obtain the standard specified clearance between the guide bush and the valve stem.
Standard oil clearance: 0.025 to 0.060 mm (0.0010 to 0.0024 inch)

2. REPLACE EXHAUST VALVE GUIDE BUSH
a) Heat the cylinder head to 80 to 100°C (176 to 212°F).
b) Using SST and a hammer, tap out the guide bush.
SST 09201-10000 (09201-01050), 09950-70010 (09951-07100)
c) Using a caliper gauge, measure the bush bore diameter of the cylinder head.
Standard bore diameter

Standard bore diameter:

If the bush bore diameter of the cylinder head is greater than 9.706 mm (0.3821 inch), machine the bush bore to a dimension of 9.735 to 9.756 mm (0.3833 to 0.3841 inch).
If the bush bore diameter of the cylinder head is greater than 9.755 mm (0.3841 inch), replace the cylinder head.
d) Heat the cylinder head to 80 to 100°C (176 to 212°F).
e) Using SST and a hammer, tap in a new guide bush to the specified protrusion height.
SST 09201-10000 (09201-01050), 09950-70010 (09951-07100)
Standard protrusion height: 9.0 to 9.4 mm (0.354 to 0.370 inch)
f) Using a sharp 5 mm reamer, ream the guide bush to obtain the standard specified clearance between the guide bush and valve stem.
Standard oil clearance: 0.030 to 0.065 mm (0.0012 to 0.0026 inch)