10
TROUBLE SHOOTING
WARNING:
• Remove battery before working on machine.
NOTE:
• The internal components of the pump and piston area have very close tolerances and are sensitive to damage from
dust, dirt, contamination of the hydraulic fluid or improper handling. The disassembly of the pump housing requires
special tools and training, and should only be attempted by qualified repair personnel that have been properly trained
and have the right tools. The improper servicing of electrical components can lead to conditions that could cause
serious injury. The pump, piston components and all electrical parts should be serviced only by authorized repair shop,
dealer or distributor.
MAINTENANCE
CAUTION:
• Always be sure that the tool is switched off and the
battery cartridge is removed before attempting to
perform inspection or maintenance.
• Never use gasoline, benzine, thinner, alcohol or the
like. Discoloration, deformation or cracks may result.
Replacing carbon brushes (Fig. 16)
Replace when they wear down to the limit mark. Keep the
carbon brushes clean and free to slip in the holders. Both
carbon brushes should be replaced at the same time. Use
only identical carbon brushes.
Use a screwdriver to remove two screws then remove the
rear cover.
(Fig. 17)
Raise the arm part of the spring and then place it in the
recessed part of the housing with a slotted bit screwdriver
of slender shaft or the like.
(Fig. 18)
Use pliers to remove the carbon brush caps of the carbon
brushes. Take out the worn carbon brushes, insert the
new ones and replace the carbon brush caps in reverse.
(Fig. 19)
Make sure that the carbon brush caps have fit into the
holes in brush holders securely.
(Fig. 20)
PROBLEM
CAUSE
SOLUTION
Cutter Rod will not
extend.
Insufficient oil
Top up oil. (Refer to “Adding Oil”)
Cutter Rod has not returned completely due
to build up of debris between Cutter Rod and
Bar Holder.
Manually push back Cutter Rod.
Remove debris and clean
Cutter Rod has not returned completely due
to damage to the Cutter Rod.
Replace Cutter Rod.
Cutter Rod has not returned completely due
to loose or damaged Blades.
Tighten Blade bolts.
Replace Blades
Cutter Rod has not returned completely due
to weak Return spring.
Replace Return spring.
Insufficient power to cut
rebar.
Insufficient oil.
Top up oil. (Refer to “Adding Oil”)
Return Valve not properly seated or seating
damaged.
Clean tip of Return Valve and Seating.
Remove any scratched from seating.
Return Valve, damaged.
Replace.
Incorrect clearance between Cylinder and
Piston.
Replace Piston (Note: different size pistons
available)
Check Valve, not properly seated or seating
damaged.
Clean Check Valve and seating.
Replace.
Urethane packing, damaged or broken.
Replace.
Oil leaks.
Oil leveller Bladder, damaged or broken.
Replace.
Cutter Rod/ Bar Holder, O-Ring damaged;
Rod/Bar Holder, surface scratched or
grooved.
Replace Back-Up Ring and O-ring.
Replace Cutter Rod/Bar Holder
Cylinder/Bar Holder, O-Ring damaged
Replace O-ring.
Cylinder/Pump Case, Gasket damaged.
Replace liner B.
Bar Cutter/Cylinder/Pump Case, flange bolts
loose.
Tighten bolts.
Motor not moving.
Motor slow or erratic.
Voltage incorrect.
Charge Battery.
Battery at end of working life.
Replace Battery.
DC Motor damaged by over-heating.
Replace DC Motor.
DC Motor bearings or gear damaged or
broken.
Replace bearings or gear.
