Huck 2480 SERIES, Instruction Manual, Page: 12 / 34

2480 & 2481 series Tooling
(HK970)
Alcoa Fastening Systems
12
I. Tool fails to operate when trigger is depressed. a. Inoperative POWERIG® Hydraulic Unit. See applicable
instruction manual.
b. Loose air or electric connections.
c. Damaged trigger assembly
d. Loose or faulty hydraulic hose couplings
e. Unloading valve not installed in Tool.
2. Tool operates in reverse. connections a. Reversed hydraulic hose between hydraulic unit and Tool.
3. Tool leaks hydraulic fluid. a. Defective Tool 0-rings or loose hose connections at Tool.
4. Hydraulic couplers leak fluid. a. Damaged or worn 0-rings in coupler body — see Coupler,
110440.
5. Hydraulic fluid overheats. a. Hydraulic unit not operating properly — see manual.
b. Unloading valve installed incorrectly.
c. POWERIG Hydraulic Unit running in reverse (918; 918-5
only) — see unit’s manual.
6. Tool operates erratically and fails to install a. Low or erratic hydraulic pressure — air in system.
fastener properly.
b. Damaged or worn piston 0-ring in Tool.
c. Unloading valve installed incorrectly.
d. Excessive wear on sliding surfaces of Tool parts.
e. Excessive wear of unloading valve in Tool.
7. Pull grooves on fastener pintail stripped during a. Operator not sliding anvil completely onto fastener pintail.
PULL stroke.
b. Incorrect fastener grip.
c. Worn or damaged jaw segments.
d. Metal particles in pull grooves of jaw segments.
e. Excessive sheet gap.
8. Collar of HUCKBOLT® fastener not completely a. Improper Tool operation — see Trouble 6.
swaged. b. Scored anvil.
9. Shear collar on Huck blind fastener not driven. a. Improper Tool operation.
b. Worn or damaged driving anvil in nose assembly.
10. Tool ”hangs-up” on swaged collar of HUCKBOLT a. Improper Tool operation — see Trouble 6.
Fastener. b. RETURN pressure too low.
c. Nose assembly not installed per NOSE DATA SHEET.
11. Pintail of fastener fails to break. a. Improper Tool operation — see Trouble 6.
b. Pull grooves on fastener stripped. — see Trouble 7.
c. PULL pressure too low.
d. Worn unloading valve.
Always check the simplest possible cause of a malfunction first. For example, a loose or disconnected trig-
ger line. Then proceed logically, eliminating each possible cause until the defective part is located. Where
possible, substitute known good parts for suspected defective parts. Use Trouble Shooting Chart as an aid
for locating and correcting trouble.
T
T
ROUBLESHOOTING
ROUBLESHOOTING