6A–56 ENGINE MECHANICAL
4. Install the injection nozzle sleeves to the cylinder
head.
1. Install the gasket (2) to the nozzle sleeve and
apply engine oil.
2. Apply sealer to the tapered part (1) of the nozzle
sleeve.
LOCKTITE No. TL290
3. Install the nozzle sleeve to the cylinder head and
insert the guide sleeve.
4. Push in the nozzle sleeve with the guide sleeve
installer 5-8840-2624-0 so that the bottom surface
of the cylinder head is reached.
5. Insert the nozzle sleeve and fix it with the clamp
and bolt.
6. Press a 9.525 mm steel ball into the guide sleeve
5-8840-2624-0. Use a hammer and punch bar to
drive the ball through the sleeve.
NOTE:
• Remove chips from the threaded part of the cylinder
head.
• Keep the cylinder head raised so that the ball can
escape from the bottom surface.
5. Install the valve seat inserts into the cylinder head.
1. Carefully place the attachment (1) (having a
smaller outside diameter than the valve seat
insert) on the valve seat insert (2).
NOTE: The smooth side of the attachment must contact
the valve seat insert.
2. Use a bench press (3) to gradually apply pressure
to the attachment and press the valve seat insert
into place.
CAUTION: Do not apply an excessive amount of
pressure with the bench press. Damage to the valve
seat insert will result.
3. The valve should be lapped before final assembly
to ensure a good valve seal.
Refer to “Valve Seat Insert Correction” in this
section.
6. Install the valve guides into the cylinder head.
1. Apply engine oil to the valve guide outer
circumference.
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