Assembly 33
29977 (Rev. 1/23/2009)
Tailwheel (Optional)
The tailwheel is ideal for mowing on relatively level
ground, orchards, etc. It may not be too useful when
mowing ditch banks and rough ground.
To install tailwheel, position angle frame with cross pipe
of tailwheel frame between two forward lugs on center
frame and install long pin provided. Attach spring cup
assembly between the two rear lugs provided on center
frame.
Height adjustment is accomplished by positioning
spring cup attaching bolt into different holes in tailwheel
tubular member. This is a spring-mounted tailwheel
and will absorb some shock loading very well.
Stump Jumper (Optional)
Remove blade pins and blades from crossbar. Remove
straps from pan assembly. Discard 3/16" thick spacer
which is under keyhole plate.
Install one strap on stump jumper. Slide over crossbar.
Install second strap. Align blade pin holes.
Insert blade pin through blade, stump jumper and
crossbar. Secure with keyhole plate, lock plate and 1/2"
bolt. Use as many blade pin shims as necessary so all
freedom is taken from blade pin. Reassemble straps to
pan as shown.
Control Valve Installation (Optional)
The valve provided is a single-spool valve set up for
use with open-center hydraulic systems. Refer to
page 27 for instructions to convert it for use with
closed-center systems. Tractors with closed-center
systems include: Ford, John Deere, MF1100-1300,
Oliver 1755, 1855, 1955 and MM-1968 and later.
If tractor has an open-center system and pump delivers
more than eight gallons per minute continuous flow,
larger hoses and fittings in the valve will be required.
The valves will handle 25 gallons per minute flow. Con-
sult your tractor manual or dealer if necessary for type
and capacity of your tractor hydraulic system.
Position valve on top of bracket as shown and secure
with 3/8 x 2-1/2 bolts. Then position fender bracket on
right hand fender so controls are convenient to the
operator. If it is a narrow-type fender, also use inner
brace (29), installing it on tire side of fender.
Drill four holes in fender and, using back-up bars (28)
provided, bolt bracket to fender. If it is a wide, flat-top
fender, discard inner place and attach main bracket
directly to fender, again drilling four holes and using
back-up bars provided.
Using diagonal brace bar, bending and drilling as
required, to stiffen fender and valve bracket if it is not
rigid enough without it. The narrow extension plate
which extends forward on valve bracket is not used
with single-spool valve and may be knocked off if it is in
the way.
On the inlet (forward) side of valve, install a 1/2 x 3/8"
adapter elbow. Into this, screw the 3/8 x 60" one-wire
braid hydraulic hose. This hose must be attached to the
tractor pressure system wherever it is appropriate. You
may have to consult the tractor manual or your dealer
to find out where to attach this.
On the return (outlet) side of valve, install a 3/4 x 1/2"
reducing bushing followed by a 1/2 x 3/8" 90° adapter
elbow. Position both elbows so hoses lie properly.
Install hose barb (37) into elbow fitting and on this,
push self-clamping, low-pressure return hose. This will
have to return to tractor hydraulic system reservoir at
appropriate spot. Consult your tractor dealer or man-
ual. Install other hose barb to tractor system and cut
hose to desired length. Install on the barbs.
NOTE: Do not slip hose on until you are ready to leave
it as hose cannot be removed from barb without cutting
it.
Install control lever on valve. Screw 3/8 x 1/4" 90°
adapter elbow into top of valve. To it, attach three foot
hose which goes to coupler and cylinder.