Gage Bilt GB743 Installation Manual Download Page 10

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HANDLE

To inspect air cylinder bore, remove o’ring (S12) and base cover (744124). Any further disassembly will require removal of the head
cylinder assy (743108) first. For complete disassembly, start by removing o’ring (S12) and base cover (744124). Next, holding tool
upright,  remove  four  button-head  cap  screws  (402479).  Lift  head  cylinder  assy  (743108)  from  handle  assy  (744129)  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 (743131), into
the  hex  of    piston  rod  assy  (744136).  While  holding  this  wrench,  remove  flexlock  nut  (400559)  using  a  7/16"  socket  wrench.  Still
holding piston rod wrench (704149), 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 (744136), tap or push on the piston rod wrench  (704149), to
eject air piston assy (744121) from bottom of handle assy (744129). After removal of air piston assy (744121), slide piston rod assy
(744136)  back  up  to  the  end  of  its  travel.  Using  packing  plug wrench  (704150)  remove  packing  plug  (744118).    With  packing  plug
removed,  power  cylinder  (743131)  can  be  removed  by  pushing  on  power  cylinder  tool  (704151)  when  inserted  into  top  of  power
cylinder (743131).

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 (744136) and tap the
piston  rod  assy  (744136)  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 (744136) 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 (704129) and o'ring (S832) just prior to replacing head cylinder assy
(743108). (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
casting. NOTE: Valve spring (744151) tool will facilitate the proper installation of the spring (744144), valve sleeve (743144) can be
pulled out using valve sleeve removal tool (744152).

S885 - RETAINING RING

S832 - O'RING

744136

A-201 - O'RING

743131 - POWER

S908 - BACK-UP RING

S892 - O'RING

403805 - O'RING

743142 - VALVE SPOOL

744149 - PIN

744142 - VALVE PLUG

400785 - O'RING