TM 5-3810-300-24&P-3
Cylinder Head 1.2
sealant will not be washed into the fuel and oil
passages.
2. After the following parts are cleaned and inspected,
and replaced if necessary, re-install them in the old
cylinder head or transfer them to the new head.
a. Exhaust valves, valve seat inserts and springs
(Section 1.2.2).
b. Cam followers, guides, push rods, springs,
retainers, rocker arms, shafts, brackets and other
related parts (Section 1.2.1).
c. Place new washers on the fuel connectors. Then
install the connectors and tighten them to 40-45 Ib-
ft (54-61 Nm) torque.
NOTE: If separate fuel manifolds are used (early
cylinder head), install the manifolds and fuel
Fig. 14 - Cylinder Head Seals and Gaskets
connectors (refer to Section 2.4). If a new
cylinder head is used, discard the manifolds and
ensure that there are no burrs or sharp edges in the
old fuel connectors.
counterbores.
d.
The fuel injectors, fuel pipes, injector control tube
assembly and water manifold, if used, can be
5. Inspect the cylinder head bolt holes in the block for
installed at this time or after the cylinder head is
accumulation of water, oil or any foreign material. Clean
installed on the engine.
the bolt holes thoroughly and check for damaged
e.
Attach the engine lifter brackets temporarily to the
threads.
cylinder head, without gaskets, to permit lifting the
head into position. The lifter brackers must not be
6. Check for extruded areas around the stud holes in
permanently attached until the cylinder head
the top of the cylinder block, if studs are used. Also
attaching bolts have been installed and tightened to
check the studs for damaged threads.
the specified torque.
7. Check the four corner plugs or drive pins, used to
Pre-lnstallation Inspection
plug the vertical oil galleries, to ensure that they are flush
with or below the top surface of the cylinder block.
Make the following inspections just prior to installing
the cylinder head whether the head was removed to
Install Cylinder Head
service only the head or to facilitate other repairs to
1. Refer to Fig. 14 and install the water and oil seal
the engine.
rings and compression gaskets as follows:
a. Place a new compression gasket on top of each
1.
Check the cylinder liner flange heights with
cylinder liner.
relationship to the cylinder block (Section 1.6.3).
2.
Make sure the piston crowns are clean and free of
b.
Place new seal rings in the counterbores of the
foreign material.
water and oil holes in the cylinder block.
3.
Make sure that each push rod is threaded into its
clevis until the end of the push rod projects through
c.
Install a new oil seal in the groove at the perimeter
the clevis. This is important since serious engine
of the cylinder block. The seal must lay flat in the
damage will be prevented when the crankshaft is
groove. Do not stretch the seal and do not use any
rotated during engine tune-up.
adhesive or other material to secure it in the groove.
4.
Check the cylinder block and cylinder head gasket
surfaces, counterbores and seal grooves to be sure
NOTE: Never install used compression gaskets or seals.
they are clean and free of foreign material. Also
check to ensure that there are no burrs or sharp
2.
To install the cylinder head on the engine without
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