Hydraulic Tappet Inspection/Installation - Honda Nighthawk CB 750 1991 Service Manual

Cylinder Head/Cylinder/Piston
Hydraulic Tappet Inspection
Inspect the hydraulic tappets for wear, damage and clogged
oil holes.
-
Never attempt to disassemble the tappets.
-
Always use the special tool when bleeding the
tappets. Use of wire can damage them.
Measure the free length of each hydraulic tappet as follows:
Attach the Hydraulic Tappet Bleeder to the tappet and
compress and extend the tappet slowly in a jar filled with
kerosene.
NOTE
Keep the hydraulic tappet below the surface of the
I
. .
kerosene.
.
Hold the tappet upright while compressing and extend-
ing
it.
Continue priming the hydraulic tappet until the air bubbles
stop and the tappet no longer collapses.
Hydraulic tappet bleeder 07973-MJ000O0
Quickly
try
to compress the tappet by hand. Measure the
compression stroke with the dial gauge.
Compression stroke : 0
-
0.2 mm(0
-
0.008 in)
Hydraulic Tappet Installation
Place the tappet in a jar filled with kerosene.
Place the tappet bleeder over the tappet.
Hold the tappet upright and pump the tappet until air bub-
bles stop coming out. Remove the tool, and try to quickly
compress the tappet by hand. You should not be able to
compress
it
more than 0.2mm (0.008in).
Remove the tappet from the fluid keeping
it
upright.
Hydraulic tappet bleeder 07973-MJ00000
Fill the tappet hole with clean engine oil.
Install the hydraulic tappets in the cylinder head.
Install the dowel pins into the cylinder head.
Install the rocker arm holders and tighten the bolts
lnstall the rocker arms.
(3) HYDRAULIC TAPPET