Simplicity AGCO Allis 2000 Series, Service & Repair Manual

Page: 43 / 312

PTO Clutch Adjustment
Check the PTO clutch adjustment after the initial 50 hour
break-in period and then after every 250 hours of
operation. Also perform the following procedure if the
clutch is slipping or will not engage.
1. Park the tractor on a level surface.
2. Turn the ignition key switch to the OFF position,
remove the key, set the parking brake, and turn the
PTO switch off (PTO switch pulled up).
3. Disconnect the negative (-) battery cable (see
Section 7, ELECTRICAL SYSTEM SERVICE).
Disconnect spark plug wires to prevent the possibility
of accidental starting while the PTO is being adjusted.
4. See Figure 6. Note the position of the three adjust-
ment slots (A) in the side of the brake plate and the
adjustment nuts (B). Insert a .012" feeler gauge
through each slot, positioning the gauge between the
rotor face and the armature face as shown in Figure 7.
NOTE: The air gap must be NO LESS THAN .012" and
NO MORE THAN .015". An air gap of less than .012" will
not allow the brake to fully disengage. An air gap greater
than .015" may cause the clutch to slip.
5. Alternately tighten the adjustment nuts (B, Figure 6)
until the rotor face and armature face just contact the
gauge. Check the slots for an equal amount of ten-
sion when the gauge is inserted and removed, and
make any necessary adjustments by tightening or
loosening the adjustment nuts.
NOTE: Adjustment at one location will change adjust-
ment at the two other slots. Make sure all three locations
have proper adjustment.
NOTE: The actual air gap between the rotor and arma-
ture may vary even after performing the adjustment pro-
4 - 5
4 Adjustments
PTO Clutch
WARNING
The muffler and surrounding areas can be
extremely hot. Allow the engine to cool before
performing this procedure.
To avoid damaging belts, do not pry
belts over pulleys.
Figure 6. Front PTO Adjustment
A. Slots
B. Nuts
WARNING
To avoid serious injury, perform adjustments only
with engine stopped, key removed, tractor on
level ground, and spark plug wires disconnected.
Figure 7. Check Air Gap
A
A
B
B
A
B
cedure. This is due to dimensional variations of compo-
nent parts, and is an acceptable condition.
6. Reconnect the negative (-) battery cable (see Section
7, ELECTRICAL SYSTEM SERVICE).
7. With tractor in neutral, PTO disengaged, and opera-
tor in seat, start the tractor engine.
8. Engage the front PTO and wait several seconds.
Disengage the front PTO and check the amount of
time it takes for the mower drive belt to stop. If mower
drive shaft does not stop within five seconds, repeat
the adjustment procedure. If the shaft still does not
stop within five seconds, replace the clutch.
Not
for
Reproduction