Gage Bilt GB752 Installation Tool Information - Page 9
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Also for Gage Bilt GB752: Original Instructions Manual (20 pages), Installation Tool Information (13 pages)
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HANDLE
To inspect air cylinder bore, remove base cover (704125). Any further disassembly will require removal of the cylinder head (752119)
first. For complete disassembly, start by removing base cover (704125). Next, holding tool upright, remove four button-head cap
screws (A-928). Lift cylinder head (752119) from handle (704132) and set aside o'ring (S832) and gasket (704129). Empty all
hydraulic fluid into a container. Place piston rod wrench (704149) down into top of power cylinder (751131), into the hex of piston rod
assy. (704138). While holding this wrench, remove flexlock nut (400559) using a 7/16" socket wrench. Still holding piston rod
wrench, remove air piston (704121) using packing plug wrench (704150), by turning counterclockwise. When air piston is completely
free from piston rod, tap or push on the piston rod wrench to eject air piston from bottom of handle. After removal of air piston, slide
piston rod (704138) back up to the end of its travel. Using packing plug wrench (704150) remove packing plug (704118). With
packing plug removed, power cylinder (751131) can be removed by pushing on power cylinder tool (704151) when inserted into top of
power cylinder.
To reassemble the handle, reverse the above procedure, being certain that all o'rings are properly lubricated before installation.
Torque packing plug (704118) to 45 foot lbs. Attach the seal guide (704152) to the piston rod (704138) and tap the piston rod through
the packing plug (704118). Attach air piston (704121) and flexlock nut (400559) torque flexlock nut to 40 inch lbs. Attach air piston
(704121) to piston rod (704138). With the piston rod in the down position, fill oil passage on top of handle with automatic
transmission fluid, Dexron III or equivalent, when looking at top of handle the oil passage is the hole that has a counterbore for (S832)
o'ring. Replace gasket (704129) and o'ring (S832), just prior to replacing head cylinder (752109). (See Filling & Bleeding instructions.)
AIR VALVE
WARNING:
DISCONNECT TOOL FROM ITS AIR SOURCE BEFORE DISASSEMBLY.
To disassemble, first disconnect tool from its air source.
into end of valve plug (704145) and pull it out. Using the same procedure, pull out spool (703142). NOTE: It should never be
necessary to remove valve sleeve (703139) unless the ports in the sleeve are plugged from contaminated air. If ports are plugged,
use needle nose pliers to grasp end of spring (704141), turning clockwise and pulling to dislodge from groove in casting. NOTE:
704162 valve spring tool will facilitate the proper installation of the spring (704141), valve sleeve (703139) can be pulled out using
valve sleeve removal tool 704163.
S832 - O'RING
704129 - GASKET
704130 - TRIGGER
ASSEMBLY
704132 - HANDLE
S734 - RETAINING RING
751131 - POWER CYLINDER
401102 - BACK-UP RING
PISTON ROD ASSEMBLY
(INCLUDES 401102 & S945)
403805 - O'RING
S945 - O'RING
704138
Remove pin (704244) and muffler (704146). Insert valve extractor (S1178)
A-928 - BUTTON
HEAD CAP SCREW (4)
A-249 - SWIVEL
400781 - O'RING
703139 - VALVE SLEEVE
704141 - SPRING
400778 - O'RING
703142 - VALVE SPOOL
ASSEMBLY
400783 - O'RING
704145 - VALVE PLUG
400783 - O'RING
704146 - MUFFLER
704244 - PIN
9
A-287 - O'RING
S115 - BACK-UP RING
405757 - O'RING
704118 - PACKING PLUG
S115 - BACK-UP RING
A-287 - O'RING
S731 - BACK-UP RING
S730 - QUAD RING
S731 - BACK-UP RING
704121 - AIR PISTON
ASSEMBLY
400559 - FLEXLOCK NUT
S725 - O'RING
704125 - BASE COVER
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