Usage:
start by:
a) remove exhaust manifold
b) remove air inlet manifold
c) remove valve covers
d) remove rocker shafts and push rods
e) remove fuel injection nozzles
1. Remove the coolant from the cooling system.
2. Remove clamp (2) from water sleeves (1) in each cylinder head. Push the water sleeves into the timing gear cover with tool (A) and a screwdriver as shown.
3. Remove bolts (3) and (4) that hold the cylinder heads to cylinder block.
| NOTICE |
|---|
Make sure the fuel injection nozzles are removed before the cylinder heads are removed. The fuel injection nozzles go through the cylinder heads and the nozzle tips can be broken off if the nozzles are not removed from the heads. |
4. Install two5/16"-18 NC forged eyebolts in the cylinder head. Fasten a hoist and remove the cylinder head. Weight of the cylinder head is 120 lb. (54 kg).
NOTE: 5P9736 Link Brackets, tool(B), can be used in place of the 5/16"-18 NC forged eyebolts for removing the cylinder head.
Install Cylinders Heads
1. Clean the contact surfaces of the cylinder head and cylinder block. Make sure the surfaces are clean and dry. Install a new cylinder head gasket.
NOTE: Clean the bore in the cylinder head for the water sleeves. Put oil on the seals on the water sleeves.
2. Install two 5/16"-18 NC forged eyebolts in the cylinder head. Fasten a hoist and put the cylinder head in position on the cylinder block.
NOTE: 5P9736 Link Brackets, tool (B), can be used in place of the 5/16"-18 NC forged eyebolts for installing the cylinder head.
3. Put 6V4876 Molykote Lubricant on the bolt threads and install the bolts that hold the cylinder head in their correct location. Tighten the bolts in the cylinder head according to the HEAD BOLT TORQUE CHART.
| NOTICE |
|---|
The higher cylinder head bolt torque may be used on earlier engines ONLY if the bolts are replaced with the later higher strength bolts (seven dash marks on the bolt head). If the earlier bolts are tightened to the later torque specification, they may yield (stretch) and lose their clamping force. |
Illustration 1. Bolt head identification.
4. Install water sleeve into cylinder head with tool (A). Install the clamp on the water sleeves.
5. Fill the cooling system with coolant to the correct level.
end by:
a) install fuel injection nozzles
b) install rocker shafts and push rods
c) install valve covers
d) install air inlet manifold
e) install exhaust manifold
Disassemble Cylinder Heads
start by:
a) remove cylinder heads
1. Fasten a hoist and put the cylinder head in position on tool (A). Use adapter plates (1) from tooling (A) to hold the head in place.
2. Put the valve spring under compression with tool (C).
3. Remove the locks from the valves.
4. Remove tool (C), retainer, spring, washer and valve from the cylinder head. Put identification on the valve as to its location in the cylinder head.
5. Check the valve spring force with tool (B). For the correct spring force, see the subject VALVES in SPECIFICATIONS.
6. Do Steps 2 through 5 for the remainder of the valves.
7. Remove the valve seat inserts with tooling (D).
NOTE: The valve guides are part of the cylinder head. Measure the bore in each valve guide .75 in. (19.0 mm) from the outside edge on both ends of each valve guide. The bore must be .3745 ± .0005 in. (9.512 ± 0.013 mm). The maximum permissible bore is .3760 in. (9.550 mm). Valve guides worn more than the maximum specification can be made to the original size by knurling. To knurl the valve guides, see the topic CYLINDER HEAD AND VALVE COMPONENTS in the RECONDITIONING PROCEDURES.
Assemble Cylinder Heads
1. Clean and remove burrs and all foreign material from the valve seat bores.
2. Lower the temperature of the valve seat inserts and install them with tool (A).
| NOTICE |
|---|
Do not make the diameter of the extractor (part of tool A) in valve seat insert larger when the insert is installed in the cylinder head. |
3. Grind the valve seat inserts according to the dimensions given in SPECIFICATIONS.
4. Put clean engine oil on the valve stem. Install the valve, washer (3), spring (2) and retainer (1) in the cylinder head.
5. Put the valve spring under compression with tool (C).
6. Install the locks on the valve stem with tool (B).
 |
Make sure locks (4) are in their correct position on the valve. The locks can be thrown from the valve when tool (C) is released if the locks are not in their correct position on the valve. |
 |
7. Remove tool (C) and hit the valve with a rubber hammer to be sure the locks are in their correct position.
8. Do Steps 4 through 7 for the remainder of the valves.
end by:
a) install cylinder heads