940-220 Powerig®
(HK604)
Alcoa Fastening Systems
9
C
C
HECKING
HECKING
AND
AND
A
A
DJUSTING
DJUSTING
P
P
RESSURES
RESSURES
CHECKING PRESSURES
WARNINGS MUST BE UNDERSTOOD BEFORE
CHECKING PRESSURES. Check pressures before
use, before troubleshooting, and after overhaul-
ing. See pressures given in specific tool manual.
Use T-124833CE gauge to check and adjust pres-
sures.
1. Plug Powerig Hydraulic Unit into a 220 volt, 15
(minimum) amp wall outlet.
2. Plug an auxiliary trigger (optional HUCK part num-
ber 113056) into the outlet on the Powerig
Hydraulic Unit control panel.
3. Connect T-gauge, Huck part no. T-124833CE, to
the hydraulic quick disconnects.
4. Move T-gauge lever to middle position (open).
5. Press and hold the auxiliary trigger to start the
Powerig Hydraulic Unit. The motor will start.
Hydraulic fluid will be directed to the PULL pres-
sure port of the installation equipment.
6. Move the T-gauge lever to the PULL position.
7. Read the PULL pressure on the gauge.
8. Move the gauge lever to the “open” position.
9. Release the tool trigger. Hydraulic fluid is directed
to the RETURN pressure port of the installation
equipment.
10.Slowly move the gauge lever to the RETURN
position.
11.Read the maximum pressure on the gauge (just
before the unit turns off). This is the RETURN
pressure.
12. Disconnect the electrical power.
13. Remove the gauge.
ADJUSTING PRESSURES
NOTE: Use "T" gage T-124833CE to check pres-
sures during adjustment. Set pressures according to
the installation equipment manual.
ADJUSTING PULL PRESSURE
NOTE: PULL pressure is the maximum POWERIG®
pressure. Do not exceed the pressure rating of the
installation equipment. See the installation equipment
manual for pressure rating.
1. Loosen the jam nut of the high pressure relief
valve.
2. Turn the adjusting screw clockwise to increase
PULL pressure OR counterclockwise to decrease
PULL pressure.
3. Tighten the jam nut after PULL pressure has been
adjusted.
4. Check PULL pressure. Follow instructions in the
appropriate section of this manual.
ADJUSTING RETURN PRESSURE
1. Loosen the jam nut on pressure switch.
2. Turn the adjusting screw clockwise to increase
RETURN pressure OR counter-clockwise to
decrease RETURN pressure.
3. Tighten the jam nut on pressure switch after return
pressure has been adjusted.
4. Check RETURN pressure. Follow instructions in
the appropriate section of this manual.
CAUTION: This check must be completed
quickly, as the hydraulic unit’s compo-
nents should not be subjected to sus-
tained high pressure.
WARNING: If recommended maximum
pressure is exceeded, violent failure of
fastening system may occur. This may
cause severe personal injury.
