Gage Bilt GB745 User Manual - Page 10

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HANDLE

To inspect air cylinder bore, remove base cover (744124). Any further disassembly will require removal of the head cylinder (745366) first. For

complete disassembly, start by removing base cover (744124). Next, holding tool upright, remove four button-head cap screws (402479). Lift

head cylinder (745366) from handle assy (744129) and set aside o'ring (S832) and gasket (745124). Empty all hydraulic oil into an approved

container and dispose of hydraulic oil in accordance with all environmental regulations applicable in your area. Place piston rod wrench

(745155) down into top of power cylinder (745331) and into slot of piston rod assy (745344). While holding this wrench, remove flexlock nut

(400559) using a 7/16" socket wrench. Still holding piston rod wrench (745155), remove air piston assy (744121) using packing plug wrench

(704150), by turning counterclockwise. When air piston assy (744121) is completely free from piston rod assy (745344), tap or push on the

piston rod wrench (745155) to eject air piston assy (744121) from bottom of handle assy (744129). After removal of air piston assy (744121),

slide piston rod assy (745344) back up to the end of its travel. Using packing plug wrench (704150) remove packing plug (744118). With

packing plug (744118) removed, power cylinder (745331) can be removed by pushing on power cylinder tool (704151) when inserted into top

of power cylinder (745331).

To reassemble the handle assy (744129), reverse the above procedure, being certain that all o'rings are properly lubricated before

installation. Torque packing plug (744118) to 45 foot lbs. Attach the seal guide (704152) to the piston rod assy (745344) and tap the piston rod

assy (745344) through the packing plug (744118). Attach air piston assy (744121) and flexlock nut (400559). Torque flexlock nut (400559) to 40

inch lbs. With the piston rod assy (745344) in the down position, fill oil passage on top of handle assy (744129) with automatic transmission

oil, Dexron III or equivalent. When looking at top of handle assy (744129) the oil passage is the hole that has a counterbore for o'ring (S832).

Replace gasket (745124) and o'ring (S832), just prior to replacing head cylinder assy (745366). (See Filling & Bleeding instructions.)

AIR VALVE

WARNING:

Disconnect tool from its air source before disassembly.

To disassemble, first disconnect tool from its air source. Remove pin (744149) and muffler (744143). Insert valve extractor (S1178) into end

of valve plug (744142) and pull it out. Using the same procedure, pull out valve spool assy (743142). NOTE: It should never be necessary to

remove valve sleeve (743144) unless the ports in the valve sleeve (743144) are plugged from contaminated air. If ports are plugged, use

needle nose pliers to grasp end of spring (744144), turning clockwise and pulling to dislodge from groove in valve chamber. NOTE: Valve

spring tool (744251) will facilitate the proper installation of the spring (744144), valve sleeve (743144) can be pulled out using valve sleeve

removal tool (744152).

S832 - O'RING

745124 - GASKET

704130

AIR ACTUATOR ASSY

744129 - HANDLE ASSY

S908 - BACK-UP RING

PISTON ROD ASSY

(INCLUDES S908 AND A-201)

GB7045

402479 - BUTTON

HEAD CAP SCREW (4)

403805 - O'RING

745331 - POWER

CYLINDER

403805 - O'RING

S892 - O'RING

A-201 - O'RING

745344

A-249 - SWIVEL

400784 - O'RING

743144 - VALVE

SLEEVE

744144 - SPRING

400779 - O'RING

743142 - VALVE SPOOL

ASSY

400785 - O'RING

744142 - VALVE PLUG

400785 - O'RING

744143 - MUFFLER

744149 - PIN

A-287 - O'RING

S115 - BACK-UP RING

A-271 - O'RING

744118 - PACKING PLUG

S115 - BACK-UP RING

A-287 - O'RING

S909 - BACK-UP RING

401462 - QUAD RING

S909 - BACK-UP RING

744121 - AIR PISTON ASSY

400559 - FLEXLOCK NUT

S12 - O'RING

744124 - BASE COVER

Rev. 9/14