Gage Bilt GB745 Manuale - Pagina 8
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TROUBLESHOOTING
Providing all maintenance conditions have been met, follow this systematic approach to diagnosis.
1. MORE THAN ONE PULL IS REQUIRED TO BREAK RIVET.
a)
Tool needs to be bled. (See filling and bleeding instructions.)
b)
Spring has fatigued, replace.
c)
Jaws are stripped or packed with chips. Clean or replace.
d)
Incorrect nose tip.
2. SLOW OR PARTIAL OPERATION WHEN THE AIR ACTUATOR ASS'Y IS DEPRESSED
a)
O'Ring (403815) and Back-Up Rings (401119) could be worn or damaged. Replace.
b)
Back-Up Rings (S908) and O'Ring (A-201) could be worn or damaged. Replace.
c)
Muffler (744143) or filter inside Valve Spool Ass'y (743142) may be plugged with dirt. Clean thoroughly and back-blow
with compressed air.
d)
Hole in metering screw in valve spool ass'y (743142) may be blocked or damaged. Hole diameter should be .028". Clear
and size or replace.
3. NO OPERATION WHEN AIR ACTUATOR ASS'Y IS DEPRESSED
a)
Tool seized due to mechanical failure or damaged parts.
4. OIL LEAKAGE
a)
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
a)
If the spring (744144) breaks or dislodges, air will flow freely through the muffler (744143). Replace or reset. Valve spring
installation tool (744251) is recommended.
b)
Check o'rings on valve sleeve (743144), valve spool ass'y (743142), and valve plug (744142). If worn or damaged, replace.
Valve sleeve removal tool (744152) is recommended.
6. FASTENER STEM JAMMED IN NOSE ASSEMBLY
a)
Nose assembly components require service.
disassemble. Replace worn or broken parts. Clean the surface the jaws ride on.
b)
Stems lodged side by side in the follower. Disassemble, remove stems, and reassemble.
c)
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 (GB745TK) be used to
facilitate overhaul. A complete overhaul can be achieved by the use of Service Kit (745017) which contains a complete set of o'rings,
back-up rings, screws, washers and gasket.
756610
STEM CATCHER BAG
PISTON ROD WRENCH
WARNING:
DEPRESS AIR ACTUATOR ASS'Y AND DISCONNECT FROM AIR WITH PISTON IN THE REAR POSITION
BEFORE OVERHAUL. SEVERE PERSONAL INJURY MAY OCCUR IF AIR HOSE IS NOT DISCONNECTED.
WHEN FORCING PISTON ROD ASSEMBLY DOWNWARD WITH HEAD CYLINDER ASSEMBLY REMOVED, HYDRAULIC FLUID
WILL EJECT FORCIBLY FROM HANDLE.
704151
POWER CYLINDER TOOL
745155
PACKING PLUG WRENCH
(756610 CATCHER BAG SHOWN ABOVE IS SOLD SEPARATELY)
GB745TK Service Tool Kit
Part No.
Description
745155
Piston Rod Wrench
704150
Packing Plug Wrench
704151
Power Cylinder Tool
704152
Seal Guide
704153
Air Bleeder Assembly
S1178
Valve Extractor
744251
Valve Spring Installation Tool
744152
Valve Sleeve Removal Tool
DISCONNECT AIR FROM
TOOL, remove the nose from the tool and
704152
SEAL GUIDE
704150
745253
BLEEDER BOTTLE
8
VALVE SLEEVE
INSTALLATION TOOL
744152
VALVE SLEEVE
REMOVEAL TOOL
USE CAUTION
S-1178
VALVE EXTRACTOR
Rev. 1/14