Gage Bilt GBP712C Manuale - Pagina 6

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TROUBLE SHOOTING

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

1. MORE THAN ONE PULL IS REQUIRED TO BREAK RIVET.

Tool needs to be bled. (See filling and bleeding instructions.)

Spring has fatigued, replace.

Jaws are stripped or packed with chips. Clean or replace.

Incorrect nose tip.

2. SLOW OR PARTIAL OPERATION WHEN THE TRIGGER IS DEPRESSED

Head Piston Rings (A-270) and (401115) could be worn or damaged. Replace.

Piston Rod Rings (S908) and (A-201) could be worn or damaged. Replace.

Muffler (744143) or filter inside spool (743142) may be plugged with dirt. Clean thoroughly and back-blow with

compressed air.

Hole in metering screw in valve spool (743142) may be blocked or damaged. Hole diameter should be .028". Clear

and size or replace.

3. NO OPERATION WHEN TRIGGER IS DEPRESSED

Tool seized due to mechanical failure or damaged parts.

4. OIL LEAKAGE

DO NOT

OPERATE WITH OIL LEAKING FROM TOOL. HIGH PRESSURE OIL MAY CAUSE SEVERE PERSONAL

INJURY.

b) Any oil leaking externally should be traced to its source. An o'ring or seal that leaks should be replaced.

5. AIR BYPASS FROM VALVE HOUSING

If the spring (744144) breaks or dislodges, air will flow freely through the muffler (744143). Replace or reset. Valve

spring installation tool (744151) is recommended.

Check o'rings on valve sleeve (743144), valve spool (743142), and valve plug (744142). If worn or damaged, replace.

Valve sleeve removal tool (744152) is recommended.

6. FASTENER STEM JAMMED IN NOSE ASSEMBLY

Nose assembly components require service.

disassemble. Replace worn or broken parts. Clean the surface the jaws ride on.

Stems lodged side by side in the follower. Disassemble, remove stems, and reassemble.

Incorrect follower.

OVERHAUL

The disassembly and re-assembly procedure can be accomplished by utilizing the following instructions and drawings. Use

extreme care during disassembly and re-assembly not to mar or nick any smooth surface that comes in contact with seals. Before

installing seals, always apply a good lubricant, such as Lubriplate, to the surfaces. It is recommended that tool kit (GBP745CTK)

be used to facilitate overhaul. A complete overhaul can be achieved by the use of Service Kit 712003 which contains a complete

set of o'rings, back-up rings, screws, washers and gasket.

STEM CATCHER BAG

WARNING

DEPRESS TRIGGER AND DISCONNECT FROM AIR WITH HEAD PISTON IN THE REAR POSITION BEFORE OVERHAUL. SEVERE

PERSONAL INJURY MAY OCCUR IF AIR HOSE IS NOT DISCONNECTED.

DOWNWARD WITH HEAD CYLINDER ASSEMBLY REMOVED, HYDRAULIC FLUID WILL EJECT FORCIBLY FROM HANDLE.

704214

745155

PISTON ROD WRENCH

GBP745CTK Service Tool Kit

Part No.

Description

745155

Piston Rod Wrench

704150

Packing Plug Wrench

704151

Power Cylinder Tool

704152

Seal Guide

745163

Fill Bottle Assembly (Not Shown)

S1178

Valve Extractor (Not Shown)

Valve Spring Installation Tool (Not Shown)

744151

Valve Sleeve Removal Tool (Not Shown)

744152

DISCONNECT AIR FROM

704151

POWER CYLINDER TOOL

704150

PACKING PLUG WRENCH

USE CAUTION

TOOL, remove the nose from the tool and

704152

SEAL GUIDE

WHEN FORCING PISTON ROD ASSEMBLY