31
Troubleshooting
Troubleshooting
Try to find a solution for the problem using the tables. If you cannot find a solution for the
problem, contact your local HYTORC representative.
(Continued on following page.)
10
SYMPTOM PROBABLE CAUSE REQUIRED ACTION
Gauge shows pressure build-up but
the tool will not cycle
1. Couplings loose or inoperative
2. Solenoid inoperative
1. Tighten and/or replace couplings. Use Test #1
to isolate problem. (pg. 34)
2. Check using test #2. (pg. 34) If solenoid is
bad, replace.
Cylinder will not retract. 1. See above
2. Voltage to electric pump is too low
to line drop or inadequate amperage
is available.
3. Linkage between piston rod and drive
arms are broken.
1. See Above
2. Get shorter extension cord or upgrade to
12AWG, 25 amp rating or better. If shop power
is adequate, draw power from welding machine
or cal rod transformer.
3. Replace parts as necessary.
Cylinder pressure will not build.
1. Oil blow by in tool (Piston seal leak,
blown O-ring, cracked piston)
2. Pump Problem
1. Replace defective parts. (Call for service)
2. Check to see if sub-plate is worn by; a) Remove
screws from pump motor to reservoir, slide Pump
motor to the side, turn pump on and while holding
down on the button, put your finger on the dump
tube (round tube under the directional control
valve) - if you feel pressure, then replace the sub-
plate and shear seals.
2A. Check to see if you have leaks from the
external relief valve and the 2 oil line connections
(bottom of relief valve and connection into pump
body’s other end) of oil line. If leaking, re-tighten
with 9/16” open end wrench. (Call for service)
2B. If pump sounds like a lot of pebbles in a tin
can, the problem may be a worn motor coupling.
Remove motor from base plate - using a pair of
needle nose pliers remove the motor coupling - if
worn, replace. (Call for service)
2C. AIR PUMPS - Faulty Air Valve due to excessive
moisture and/or dirt in air supply. Disassemble
air valve and wipe any residue from air valve
piston. Spray brake cleaner into air valve body,
dry thoroughly. Disassemble all small air lines
and blow out with compressed air. Lubricate
both air valve piston and body with hydraulic
oil (sparingly) and reassemble. (Call for service)
2D. Air pumps - Faulty remote control valve
cartridge. Replace.
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