Arconic 918 Series, Instruction Manual

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918 series Powerig Hydraulic Units (HK786)
Troubleshooting
Always check the simplest possible cause of a malfunction first. Review the sections Preparation For Use and First-time Start-up.
Check fuses, circuit breakers, control cord and connections, and hydraulic hose couplers. Where possible, substitute known good
parts for suspected bad parts. Use the following troubleshooting information to aid in locating trouble and correcting it. Also,
refer to the electrical and hydraulic schematics, and the wiring diagrams to trace defective circuits.
1. With Powerig
®
motor running, tool fails to operate
when trigger is pressed:
a. Loose or faulty connections in control cord.
b. Loose or faulty hydraulic hose couplings.
c. Defective tool trigger assembly.
d. Open 24 volt circuit breaker.
e. Defective relay or solenoid coil.
f. Hydraulic fluid viscosity too heavy to pick up prime;
replace fluid.
g. Clogged strainer in reservoir.
h. Defective hydraulic pump; replace pump.
j. Defective directional valve assembly; replace assembly.
k. Installation tool not operating properly. (See tool
instruction manual to troubleshoot tool.)
2. Tool does not return on release of trigger:
a. Defective relay or solenoid coil.
b. Defective directional valve. Clean and replace spring.
c. Installation tool not operating properly. (See tool
instruction manual to troubleshoot tool.)
3. Pump cavitating (noisy during entire installation cycle):
a. Low hydraulic fluid level in reservoir.
b. Clogged strainer in reservoir.
c. Hydraulic fluid viscosity too heavy to pickup prime;
replace fluid.
4. Tool operation slow but entire cycle does occur:
a. Pump cavitating. See 3.
b. Hydraulic fluid viscosity too thin. Do not operate if over
150-degrees F (65-degrees C).
c. Worn seals in combination valve; replace seals with kit.
d. Worn pump seals, seats, etc. Replace seals, etc. or entire
pump if necessary.
e. Worn directional valve or relief valves. Use Gauge
T-124833CE to check output pressure; replace valve if
necessary.
5. Solenoid coil heats up:
a. Low voltage. Check and correct.
b. Wrong solenoid coil. Replace coil (50 Hz or 60 Hz)
Kits & Accessories
Huck offers a variety of kits for use with the Powerig
®.
These
kits simplify parts ordering for maintenance and operation.
Use these kits to harness extra heat in cold-weather situations,
extend the reach of the Powerig, or convert voltage. In order
to maintain safe pressure at the Powerig and working pressure
at the tool, do NOT exceed 156 ft. (47.5 meters) of hose
length. Hose and Control Cord Kits can be coupled using Quick
Disconnects (P/N 110440) and Adapter Unions (P/N 503697);
these parts must be ordered separately. The hoses in these
kits are rated by the manufacturer for 10,000 psi (689.5 BAR)
maximum working pressure.
Hose and Control Cord Kit (12 ft. hose) 110838
Hydraulic Quick Disconnects (male and female) - 110440
Hose and Control Cord Assembly - 110847
Hose and Control Cord Kit (26 ft. hose) 110839
Hydraulic Quick Disconnects (male and female) - 110440
Hose and Control Cord Assembly - 110848
Hose and Control Cord Tube - n/a
Control Cord - 110525
Hose and Control Cord Kit (52 ft. hose) 110841
Hydraulic Quick Disconnects (male and female) - 110440
Hose and Control Cord Assembly - 110848 (qty. 2)
Adapter Union - 503697 (qty. 2)
Hydraulic Quick Disconnects 110440
This pair of quick disconnects provides a positive, easy
connection for tool hoses to Powerig hoses. This set contains
one female connector and one male connector.
Pressure Checking Gauge T-124833CE
Huck recommends that maintenance personnel do periodic
checks with Pressure Checking Gauge T-124833CE.
Auxiliary Electric Trigger Assembly 113056
contains a switch, housing, and a 13-foot (3.9 meter) cord.
Control Cord Connector Set 110835
Replacement Control Cord Connector Set
Hydraulic Fluid Heater Kit 110907
This optional Heater Kit for cold weather has two heater
elements and related components with instructions included.
Pump Seal Kit 110933
contains shaft seal and O-rings for overhauling one hydraulic
pump.
Voltage Changing Conversion Kits
for changing unit from 440V to 220V: 918-220KIT
for changing unit from 220V to 440V: 918-440KIT
WARNING: Abnormally high pressure can
cause sudden failure of the POWERIG, and
excessive wear. Severe personal injury could
result.