74” Allied Snowblower
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ASSEMBLY INSTRUCTIONS – cont’d.
7. Mounting blower on tractor:
a) Mount the blower on a tractor with a category 1 or category 2 hitch.
b) Using tape or bright colored marking pen, mark on the outer shields the
position where the shaft is completely pushed together and the position
where you have a 4" overlap. Watch these marks when moving the
blower through all possible operating angles to see that the PTO shaft
stays within this range.
c) With the engine on the tractor shut off, attach the PTO shaft. The tractor
end has a standard 6-spline end with a spring loaded locking collar. The
Snowblower end has a clamp-style yoke with a 3/8" keyway. Slide the
yoke onto the gearbox shaft with the 3/8" key supplied. Lock the yoke in
place with the ½” x 3" hex bolt and lock nut fitted through the groove in the
gearbox shaft. After tightening the bolt, insert and tighten the 3/8" socket
set screw supplied. CAUTION: Always check to see that both
ends of the PTO shaft are securely attached every time the Snowblower is
used. This should always be done with the Tractor engine off.
d) Check that the PTO shaft does not bottom or separate with the blower in
the extreme high and low positions. A longer optional PTO shaft is
available if the standard shaft is too short. Check for free movement of all
parts in various raised positions; particularly the PTO shaft.
8. PTO Shield: All snowblowers are supplied with a PTO shield. Bolt the shield (#74)
to the hinges on the top of the gearbox on the snowblower using ¼” x ½” hex bolts,
lock washers and hex nuts. Insert a 3/16" cotter pin in the hole in the shield and
in the hole at the bottom corner of the gearbox. Fold back the cotter pins to hold
them in place. Hook the ends of the spring (#71) into these cotter pins to hold
the shield down. Bolt the PTO shield to the gearbox plate using these same
bolts. Insert a 3/16" cotter pin in the hole in the shield and fold to lock in place.
Hook one end of the spring (#71) into this cotter pin and the other end into a hole
in the lower gearbox plate to hold the shield in place.
CAUTION: Do not run the snowblower without this shield in place.