Gage Bilt GB751FP Installation Tool Information - Page 11

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HANDLE

To inspect air cylinder bore, remove base cover (704125). Any further disassembly will require removal of the head cylinder assy

(703109) first. For complete disassembly, start by removing base cover (704125). Next, holding tool upright, remove four button-head

cap screws (A-928). Lift head cylinder assy (703109) from handle assy (704132) and set aside o'ring (S832) and gasket (704129).

Empty all hydraulic oil into an approved container and dispose of in accordance with all environmental regulations applicable in

your area. Place piston rod wrench (704149) down into top of power cylinder (751131) and 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 (704149),

remove air piston assy (704121) using packing plug wrench (704150), by turning counterclockwise. When air piston assy (704121) is

completely free from piston rod assy (704138), tap or push on the piston rod wrench (704149) to eject air piston assy (704121) from

bottom of handle assy (704132). After removal of air piston assy (704121), slide piston rod assy (704138) back up to the end of its

travel. Using packing plug wrench (704150) remove packing plug (704118). With packing plug (704118) removed, power cylinder

(751131) can be removed by pushing on power cylinder tool (704151) when inserted into top of power cylinder (751131).

To reassemble the handle assy (704132), 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 assy (704138) and tap the

piston rod assy (704138) through the packing plug (704118). Attach air piston assy (704121) and flexlock nut (400559). Torque

flexlock nut to 40 inch lbs. Attach air piston assy (704121) to piston rod assy (704138). With the piston rod assy (704138) in the down

position, fill oil passage on top of handle assy (704132) with automatic transmission oil, Dexron III or equivalent. When looking at top

of handle assy (704132), the oil passage is the hole that has a counterbore for o'ring (S832) . Replace gasket (704129) and o'ring

(S832), just prior to replacing head cylinder assy (703109). (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 valve spool assy (704143). NOTE: It should never

be necessary to remove valve sleeve (704140) unless the ports in the valve sleeve (704140) 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: Valve spring tool (704162) will facilitate the proper installation of the spring (704141). Valve sleeve (704140) can be

pulled out using valve sleeve removal tool (704163).

S/N: 1001 AND ABOVE

PLEASE CONTACT GAGE BILT FOR ALL OTHER SERIAL NUMBERS.

Remove pin (704244) and muffler (704146). Insert valve extractor (S1178)

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