Gage Bilt GB745/204 Manual - Halaman 9

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HEAD

WARNING:

DISPOSE OF HYDRAULIC OIL IN ACCORDANCE WITH ALL ENVIRONMENTAL LAWS AND

REGULATIONS APPLICABLE IN YOUR AREA.

Disconnect hydraulic hoses and air line from adapter-handle (745303) and drain hoses. Push piston (204203) back to

rear of the cylinder (204300) to empty all oil from the tool. Push piston ass'y (204203) to the front of the cylinder

(204300).

Unscrew socket head cap screw (206118) from retaining ring (206117) use a spanner wrench to remove retaining ring.

Push piston ass'y (204203) back until cylinder cap ass'y (206115) falls out of cylinder (204300). Push piston ass'y

(204203) out the rear of the cylinder (204300). Using a small blunt object, remove o'rings and back-up rings from

components.

Clean parts mineral spirits or other o'ring compatible solvent being sure to clean o'ring grooves. Inspect components

for scoring, excessive wear or damage.

Reassembly sequence is opposite of disassembly. Coat hose fitting threads with a non-hardening Teflon® thread

compound such as Slic-tite® (GAGE BILT part no. 403237).

IMPORTANT:

Be sure to use thread sealant on all hydraulic fittings, Loctite® 30534 or similar Teflon® infused pipe

dope is recommended.

properly applied, pieces of Teflon may enter the hydraulic system and cause malfunction or damage.

Use 1 1/2 wraps of tape on each thread. Cut off all loose tape ends. Tighten until fitting feels snug and

then go 1/2 to a full turn past that point.

HANDLE

To inspect air cylinder bore, remove only parts (744124) . Any further disassembly will require removal of the handle

adapter first.

For complete disassembly, start by removing socket head cap screws (A-928). Lift adapter-handle (745303) from

handle (744129) and set aside o'ring (S832) and gasket (745124). Empty all hydraulic oil into a container.

Place piston rod wrench (745155) down into top of handle (744129), into the slot of piston rod assembly (745344) and

remove nut (400559) then unscrew and remove piston rod assembly (745344) from air piston ass'y (744121). Insert

threaded end of power cylinder assembly tool (704151) into bottom of air cylinder and remove air piston ass'y (744121).

After removal of air piston ass'y (744121), slide piston rod ass'y (745344) back up the end of its travel. Using packing

plug wrench (704150) remove packing plug (744118). With packing plug removed, power cylinder (745331) can be

tapped out by lowering power cylinder tool 704151 down into top of handle onto top of cylinder.

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

before installation. Attach the seal guide (704152) to the piston rod ass'y (745344) and with a mallet, tap the piston rod

ass'y (745344) through the packing plug (744118).

AIR VALVE

To disassemble, first disconnect tool from its air source. Remove pin (744149) and muffler (744143). Thread valve

extractor (S1178) in end of valve plug (744142) and pull it out. Using the same procedure, pull out valve spool ass'y

(743142). NOTE: It should never be necessary to remove valve sleeve (743144) unless the ports in the valve sleeve are

plugged from contaminated air. If it is suspected that the ports are plugged up, use needle nose pliers to grasp end of

spring (744144), turning clockwise and pulling to dislodge from groove in casting. With spring (744144) removed, valve

sleeve (743144) can be pulled out using valve sleeve removal tool (744152) .

CAUTION:

Teflon tape is an excellent thread sealer, however, if it is not

CAUTION:

Over tightening can easily distort the threads.

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