1. Component views
Cylinder head
Part name
- Split collar
- Spring upper seat
- Valve spring
- Valve stem oil seal
- Spring lower seat
- Valve guide
- Cylinder head
- Inlet valve and exhaust valve
2. Rear engine hanger bracket removal
1) Remove the special tool from the rear engine hanger bracket.
2) Remove the rear engine hanger bracket from the cylinder head.
3. Front engine hanger removal
1) Remove the harness bracket from the front engine hanger.
2) Remove the front engine hanger from the cylinder head.
Legend
- Front engine hanger
- Harness bracket
4. Inlet manifold removal
1) Remove the inlet manifold and gasket from the cylinder head.
Caution
- Do not reuse the gasket.
5. Exhaust manifold removal
1) Remove the exhaust manifold heat protector from the exhaust manifold.
2) Remove the exhaust manifold and gasket from the cylinder head.
Caution
- Do not reuse the gasket.
6. Valve spring removal
1) Remove the valve stem end cap from the valve stem.
2) Remove the split collar from the valve using the special tool.
SST: 5-8840-2865-0 - valve spring compressor adaptor
SST: 5-8840-2546-0 - valve spring compressor
Legend
- 5-8840-2865-0
- 5-8840-2546-0
3) Remove special tool from the cylinder head.
4) Remove the upper spring seat from the valve spring.
5) Remove the valve spring from the cylinder head.
6) Apply number tags to the valve springs.
7. Valve removal
1) Remove the inlet valve and the exhaust valve from the cylinder head.
Note
- Store the removed valves with the number tags.
8. Valve stem oil seal removal
1) Remove the valve stem oil seal from the cylinder head using pliers.
Caution
- Do not reuse the valve stem oil seal.
2) Remove the lower spring seat from the cylinder head.
9. Valve seat insert removal
1) Arc weld the entire inner circumference of the valve seat insert.
2) Cool the valve seat insert for about 3 minutes.
Note
- The valve seat insert becomes easier to remove due to the contraction caused by cooling.
3) Remove the valve seat insert from the cylinder head using a screwdriver.
Caution
- Do not damage the cylinder head.
10. Valve guide removal
1) Tap out the valve guides from the lower side of the cylinder head using the special tool.
SST: 5-8840-2816-0 - valve guide remover and installer
11. Oil seal removal
1) Remove the oil seal from the cylinder head.
12. Heater pipe removal
1) Remove the heater pipe from the cylinder head.
