Gage Bilt GB512ABOM Manuel d'instructions original - Page 11

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Providing all maintenance conditions have been met, follow this systematic approach to diagnosis.

1. NO OPERATION WHEN ELECTRIC ACTUATOR (240122) / ACTUATOR ASSEMBLY-AIR (704130) IS DEPRESSED.

a.) Check powerunit power source.

b.) Control cord may be loose or damaged.

c.) Faulty Actuator. Replace.

d.) Check hydraulic couplings; tighten, repair or replace.

2. SLOW OR PARTIAL OPERATION WHEN ELECTRIC ACTUATOR (240122) / ACTUATOR ASSEMBLY-AIR (704130) IS DEPRESSED.

a.) Low hydraulic pressure. Check powerunit, adjust.

b.) Back-up ring (405875) or back-up ring (401121) on the piston assembly (512304) could be worn or damaged. Replace.

c.) Excessive wear or scoring on moving parts. Check and replace faulty parts.

3. TOOL OPERATES IN REVERSE.

a.) Tool stops in back position. Hydraulic hoses are reversed. Correct.

4. HYDRAULIC OIL OVERHEATS.

a.) Powerunit motor rotation reversed. Electrical connections reversed. See powerunit instruction manual.

b.) Restrictions in either hydraulic lines, hoses or couplings. Check and tighten, clean or replace.

5. OIL LEAKAGE.

a.) Hydraulic oil leaks from connections. Tighten threaded connections. Do not use Teflon® tape.

b.) Oil leaks from tool. Determine source of leak and replace worn or defective o'rings and back-up rings.

6. PINTAIL GROOVES STRIPPED DURING PULL STROKE.

a.) Nose Assembly must be pushed onto fastener fully.

b.) Chips may have collected in chuck jaws. Disassemble nose assembly, clean jaws in mineral spirits or use a sharp pointed

object to remove chips. Re-lube surfaces jaws ride on.

c.) Chuck jaws may be worn or damaged. Replace.

d.) Pintail too short for jaws to properly grip. Select proper grip length fastener.

e.) Excessive gap between sheets. Reduce gap before attempting to install fastener.

NOSE ASSEMBLY WON'T ACCEPT FASTENER PINTAIL.

a.) Spent fastener stem may be jammed in pulling head. Disassemble and check for worn or broken parts in nose assembly.

Replace defective parts, clean and re-lube jaws before reassembling.

WARNING:

Disconnect the tool from power source when adding or removing relief valves.

1. Insert relief valve into piston with 4 flats facing rear of tool (see image below). DO NOT insert into piston with 4 flats facing the opposite

way or damage to the tool or personal injury can occur.

GB512BOM/GB512ABOM INSTALLATION TOOL

TROUBLESHOOTING

RELIEF VALVE - INSTALLATION

Position relief valve 4 flats

INCORRECT

towards REAR of tool.

Image may not reflect actual tool

REV 12/22