Troy-Bilt 7 HP - Page 14

PTO HORSE MODEL
TECHNICAL MANUAL
Page 3-2 4/90
SECTION 3: Pre-Service Inspection
a. The bolts holding the rear bear-
ing cap may not be sufficiently
tightened.
b. The washers on the bolts that
hold the rear bearing cap may be
worn
or the bolts may not have
been coated with non-hardening
gasket sealer.
c. The rear bearing cap gasket
may have failed.
• Inspect the left side
of the ti lIer
tine shaft for oil leaks. If you see
an oil leak, inspect the following:
a. The tiller housing cover may
not be sufficiently tightened;
check all five bolts.
b. The washers on the bolts that
hold the tiller housing cover may
be worn
or the bolts may not have
been coated with non-hardening
gasket sealer.
c. The tiller housing cover
gasket(s) may have failed.
d. The tiller housing cover oil seal
may have failed; find out why.
• Inspect the right side
of the tiller
tine shaft for oil leaks. If you see
an oil leak, the oil seal needs to be
replaced. Then, discover why the
oil seal failed.
• Check the tiller tine shaft
for
play:
Using
two hands, grasp the tiller
tine shaft and rotate the shaft back
and forth.
You should be able to rotate the
shaft slightly and to hear a small
click. This means the
tiller tine
shaft
is shimmed correctly.
If you cannot rotate the shaft and
do not hear a click, it means that
the side cover needs to be
shimmed outward using various
thicknesses of gaskets. This
procedure
is explained in Section
6
of this manual (see "Tiller Tine
Shaft Assembly").
Being able to rotate the shaft more
than a small amount and hearing a
louder click means the tiller tine
shaft is either shimmed incorrectly
(too many gaskets)
or that the
bronze worm gear
is wearing out.
• There should be no end play,
vertical play
or diagonal play in
the tiller tine shaft. If you find such.
play, tighten the tiller housing
cover bolts.
If this does not eliminate the play,
a shim may need to be installed
on the tiller tine shaft,
as explained
in Section 6 of this manual.
PTO Power Unit and Tiller
Attachment Drive Shaft
Connection -
Engage the Tines/
PTO Clutch Lever and turn the
pulley at the front
of the PTO
power unit. The dog clutches
between the tiller attachment and
the PTO power unit should
engage and the tiller tine shaft
should move
as you turn the pul-
ley. If the dog clutches
do not
engage, the Tines/PTO Clutch
Lever may need to be adjusted.