Sprocket And Chain Replacement For Metering Wheel; Cut-Off Theory Of Operation Pressure Plate - Textron Jacobsen Ryan 544853C Manual Del Usuario

6. Unlock rear wheels (if locked) by turning the locks
counterclockwise.
7. Lower metering wheel to ground and engage drive
shifter lever.
8. Lift handle of unit, raising rear of unit off ground, and
lower blade to preset depth. If the Sulky Roller
Accessory is to be used, attach to sodcutter with
hitch pin at this time. See Sulky Roller parts pages.
9. Adjust throttle to full speed.
10. Operate unit until several cuts have been made.
11. Check for correct sod lengths. If fine adjustments
need to be made, adjust the segments (Part No.
515534) on the metering wheel. Segments can be
moved out to increase cut length, or moved in to
decrease the length of cut. Be certain all segments
are adjusted uniformly.
NOTE: Adjustments of up to 2" (50.8 mm) per ft. can be
made by adjusting the segments.
12. At the end of each pass it will be necessary to discon-
nect the Sulky Roller while turning the unit around to
begin the next pass.
5.11 SPROCKET AND CHAIN
1. Remove metering wheel for easier access to screws
in chain guard. Refer to Figure 15.
2. Remove chain guard and chain.
3. Remove upper sprocket from shaft. DO NOT remove
washer from behind sprocket.
REPLACEMENT FOR
METERING WHEEL
OPERATION & CONTROLS 5
WASHER
CHAIN
SPROCKET
METERING WHEEL
SEGMENT
FIGURE 15
4. Install new sprocket and attach to shaft. Be sure key
and key-way are aligned so the key will not be
pushed out of the shaft. Install new chain.
5. Install chain on lower sprocket and install chain
cover and metering wheel.
5.12 CUT-OFF THEORY OF OPERATION
(A) The Cut-off Unit is a single revolution, self-contained,
friction clutch and brake unit.
(B) A spring loaded pressure plate, with a horizontal
movement of approximately .005", is controlled to apply
pressure on one of the friction discs on each side of the
plate.
(C) When the plate is pulled back (spring compressed)
the braking friction disc makes contact with the stationary
housing which stops the rotary movement of the plate.
(D) When the plate is released (spring expanded) the
clutch friction disc comes into contact with the revolving
flywheel and rotates the plate through a single revolution
cycle before the plate is again pulled into its braking posi-
tion.
(E) As the pressure plate rotates through its single cycle,
the connecting rod drives the cut-off blade in and out of
the ground.
CHAIN GUARD
COVER
DECREASE
INCREASE
PRESSURE PLATE
11