Spearhead Twiga Carrier CF20, Operator'S Instruction Manual

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8999145EN: v1 26/02/2020
44
Original instructions (ENGLISH)
Website: www.spearheadmachinery.com
9 Trouble Shooting
Trouble shooting - Arm mower base unit issues
Symptom Possible cause Remedy
9.1 Oil over-heating
a) Forward cutting speed too
fast
Drop a forward gear and re-try
9.2
Cutting power reduces
with time
b) Problem with one of the
hydraulic components i.e.
motor, ram
Take machine to a Spearhead dealer
for a full hydraulic diagnostic check
9.3 Controls not responding
a) Ram hoses not connected
Ensure hoses are correctly seated on
the prime mover
b) Faulty controls in prime
mover
Contact your prime
mover’s dealership
c) Leaking PO check valves
Change the PO check valve for the
valve section
9.4
Breakout too weak
(Twiga Carrier CF30
only)
a) Too fast forward speed Reduce forward speed
b) Breakout pressure too low
A dealer technician will need to check
the breakout pressure.
c) Blown ram seals
Add a tap to line, switch off and test. If
still weak then replace ram seals.
b) Loss of gas charge
(nitrogen)
Switch off tap and hold attachment at
full reach about 2m from ground.
Switch tap on, head should drop about
0.5m. If solid replace accumulator.
Accumulators are not serviceable
9.5 Poor cutting performance a) Blades worn out
Replace blades once the performance
has dropped below an acceptable level
9.6
Vibration
–
Investigate reasons
quickly!
a) Lost cutting blades(s) Replace any missing blades
b) Worn bearings
Move attachment from horizontal to
vertical and if the vibration changes
significantly replace bearings.
c) Bent cutting disc(s)
Replace discs or contact Spearhead
Machinery shaft reconditioning service
9.7 Blades continually stall
a) Forward cutting speed too
fast
Reduce forward cutting speed
b) Worn motor
If a worn motor is suspected, take
machine to a Spearhead dealer for a full
hydraulic diagnostic check