Clover HRT160, Operator'S Manual

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Operator’s Manual
21
Only use Universal Hydraulic Oil part number
PUMP
A 'noisy' pump (whistling or screaming) means that there is air in the rotor drive circuit.
A. STOP THE MACHINE AT ONCE.
B. Locate air entry.
C. Fix and test carefully.
Maintenance Section 5-4
Rotor unit
Vibration of the rotor shaft can cause premature failure of the rotor shaft bearing, as well as hydraulic and
structural failures. It is important not to operate the machine with the head vibrating. As soon as any
vibration is felt stop operating the machine and make the checks listed below:
A. Stop the tractor and disengage the PTO drive.
B. Check for missing flails and always replace missing flails in pairs, on opposite sides of the rotor in
order to maintain the balance of the rotor shaft.. Replace one flail, hanger, bolts and other fittings - rotate
shaft 180
O
and replace the same for each flail.
NOTE : The flails and the rotor shaft are dynamicaly balanced, the flails must be replaced in pairs. If this
is not done the rotor shaft may become out of balance and cause excessive vibration.
C. Check that flail attachments are tight.
If any flails were missing or loose and have been replaced or tightened and the vibration continues check
the following.
D. Stop tractor engine and disengage PTO drive.
E. Check the Rotor Shaft bearings to see if they are damaged or loose.
F. Replace bearings if necessary.
If vibration persists, it is an indication that the rotorshaft is probably bent and must be replaced.
Hydraulic Cylinders
It is advisable to check all cylinder caps for tightness occasionally and if found to be loose, tighten them
immediately.
Storage
Before removing the machine from the tractor, a thorough check of the machine should be made as
follows:
A. Thoroughly clean all moving parts, particularly the rotor unit.
B. Check that all flails are in place, and that they are in good condition.
C. Check all hoses for damage, such as cracks, evidence of chafing and leaks.
D. Smear all unpainted metal parts with grease and lubricate all grease fittings.
E. Make a note of item that needs replacing so that parts can be ordered.
Parking and removal
In the parked position the machine is supported by four stands on the mainframe and
also the rotor unit. To put the machine into this position the following procedure is necessary:
A. Place the rotor unit on the ground about 1 meter (3ft 3in) from the tractor rear wheel.
B. Remove stands from underneath the tank and fit to the mainframe.
C. Lengthen to link so that the weight of the machine is on the rear stand.
D. Remove pin connecting the right frame to the tractor, and lower the three point linkage so that the
weight of the machine is on the front stands.
E. Stop Tractor engine.
F. Open accumulator valve and operate control levers in both directions to release pressure.
G. CLOSE ISOLATOR VALVES ON FIRST ARM AND ACCUMULATOR (IF FITTED).
H. Remove control lever unit from inside tractor and feed through rear of cab without bending cable too
tightly. Tie unit onto mainframe and protect from weather.
I. Disconnect cable from control box to control valve and feed through rear of cab.
J. Release tractor end of PTO shaft and pull back along splined (on some tractors it may not be possible
to remove the PTO completely at this stage).
K. Remove lower link pins.
L. Start tractor engine and drive carefully forward, releasing machine and PTO shaft from tractor.
M. Replace lower link pins and place cap over tractor PTO.
N. Remove control box from cab and store in a clean dry place