Textron Jacobsen Super LF 1880 Fairway Mower with ROPS, Инструкции по обслуживанию и ремонту

Страница: 257 / 300

ATTACHMENTS
12E-13
BACKLAPPING ON THE TRACTOR
1. Lower the reels to the ground, disengage all
drives, engage the parking brake and stop the
engine.
2. Loosen the locknut at the valve stem
(Figure 12E-4).
3. Open the hood and place the backlap control to
REVERSE (Figure 12E-4). Start the engine and
set the throttle to low idle speed.
Figure 12E-4. Backlap Control
4. Set the mower switch on the instrument panel to
REVERSE. Reels will begin rotating.
5. Both the front and rear reel valves contain an
adjustable control to control the speed of the
reels. The front valve controls the front three reels.
The back valve controls the two rear reels. Turn
the valve control counterclockwise to reduce the
reel speed. Repeat for both valves.
6. After the desired speed is set, disengage the reels
and stop the engine. Tighten the locknut to lock
adjustment in place. Start the engine and set the
mower switch to REVERSE to begin backlapping.
7. Apply the lapping compound, with a long handled
brush, along the entire length of the reel.
8. When the blades have been evenly honed, care-
fully and thoroughly wash off the remaining mix-
ture.
9. Repeat the entire process on the other reels.
10.After lapping, turn the mow switch to OFF (center
position) and set the backlap to FORWARD rota-
tion.
NOTE:
The backlap control limits reverse speed only.
Once the desired backlapping speed has been
set, the valves can remain in this position for nor-
mal mowing. If full reverse speed is needed, for
instance during operation of vertical mowers, the
valve can be fully closed (turn clockwise).
Bench Lapping
When a reel and bedknife have been ground or a new
reel and/or bedknife are being installed, the assembled
reel should be lapped using an electric powered bench
lapper. Operate the bench lapper in accordance with
the manufacturer’s instructions.
1. Connect the lapper to the reel shaft at the end
opposite the hydraulic reel motor.
2. Apply lapping compound to each reel blade.
3. Run the lapper and continue applying lapping
compound, making slight reel-to-bedknife adjust-
ments if necessary until there is uniform contact
along the full length of the cutting edges.
4. Turn off the lapper.
5. Wash off the compound before running the reel in
the forward direction.
6. Carefully turn the reel backward slowly by using a
wooden or other non-metallic probe. Make the
necessary reel-to-bedknife clearance adjust-
ments (see Section 12D).
7. As a final check, place a strip of newspaper verti-
cally between the reel and bedknife. Manually
rotate the reel forward. The blades should cut the
newspaper across the entire edge of the bedknife.
8. If the mower unit was removed, lubricate and
install the mower unit on the machine as
described in Section 12F.
9. Make reel-to-bedknife adjustments and cutting
height adjustments for each reel after installation
(see Section 12D).
WARNING
Since the engine is operating during lapping on the
machine, never backlap on the machine without
proper ventilation. Carbon monoxide in exhaust
fumes can be fatal.
WARNING
Do not operate the reel by hand. Use a piece of
wood, plastic, or other rigid non-metallic material to
rotate the reel by hand, when checking clearances.