Jet GH-1340W Owner's Manual

Also see for GH-1340W: Parts list

Contents

Jet GH-1340W Owner's Manual Manual pdf 18 page image

18OperationFeed and Thread Selection1. Reference the feed and thread found onthe gear box faceplate tables (A, Fig. 17 &page 22 of manual).2. Move levers (B, C, D, E & F, Fig. 17) tothe appropriate positions according to thechart.Change Gears ReplacementThe 25T, 127T, 50T gears are installed in theend gear compartment when delivered fromthe factory. This combination will cover mostinch feeds and threads under normalcircumstances.The 30T, 32T, and two 40T gears found inthe tool box are used with differentcombinations as indicated on feed and threadtables (A, Fig. 17).1. Disconnect the machine from the powersource (unplug).2. Open the door on the left end of theheadstock.3. Loosen nuts (A & B, Fig. 18).4. Move quadrant (C, Fig. 18) out of the wayand hold in place temporarily by tighteningnut (A & B, Fig. 18).5. Remove hex socket cap screws (D and/orE, Fig. 18), depending on which gear is tobe changed.6. Install new gear(s) and tighten in placewith a hex socket cap screw.7. Loosen nut (B, Fig. 18), move quadrantback so teeth mesh on gears, and tightennuts (A & B, Fig. 18).Caution: Make sure there is a backlashof .002”-.003” between gears. Setting thegears too tight will cause excessive noiseand wear.8. Close the door and connect the machineto the power source.