Jet Tools GH-1440W Manuel d'utilisateur télécharger pdf (Page 18)

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8

Operation

Feed and Thread Selection

1. Reference the feed and thread found on

the gear box faceplate tables (A, Fig. 17 &

page 22 of manual).

2. Move levers (B, C, D, E & F, Fig. 17) to

the appropriate positions according to the

chart.

Change Gears Replacement

The 25T, 127T, 50T gears are installed in the

end gear compartment when delivered from

the factory. This combination will cover most

inch feeds and threads under normal

circumstances.

The 30T, 32T, and two 40T gears found in

the tool box are used with different

combinations as indicated on feed and thread

tables (A, Fig. 17).

1. Disconnect the machine from the power

source (unplug).

2. Open the door on the left end of the

headstock.

3. Loosen nuts (A & B, Fig. 18).

4. Move quadrant (C, Fig. 18) out of the way

and hold in place temporarily by tightening

nut (A & B, Fig. 18).

5. Remove hex socket cap screws (D and/or

E, Fig. 18), depending on which gear is to

be changed.

6. Install new gear(s) and tighten in place

with a hex socket cap screw.

7. Loosen nut (B, Fig. 18), move quadrant

back so teeth mesh on gears, and tighten

nuts (A & B, Fig. 18).

Caution: Make sure there is a backlash

of .002”-.003” between gears. Setting the

gears too tight will cause excessive noise

and wear.

8. Close the door and connect the machine

to the power source.

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