Filter
Top Products
3
Table of Contents
Section Page
Warranty and Service ...................................................................................................................................... 2
Warnings ........................................................................................................................................................ 4
Introduction ..................................................................................................................................................... 6
Specifications .................................................................................................................................................. 6
Unpacking ....................................................................................................................................................... 7
Contents of the Shipping Container.............................................................................................................. 7
Set-up and Installation .................................................................................................................................... 8
Preparing the Milling Machine for Service .................................................................................................... 8
JTM-4VS Dimensions ..................................................................................................................................... 9
JTM-4VS Overview and Terminology ............................................................................................................ 10
Electrical Connections ................................................................................................................................... 11
General Electrical Cautions .................................................................................................................... 11
Wire Sizes.............................................................................................................................................. 11
Lubrication................................................................................................................................................. 11
Operating Instructions ................................................................................................................................... 11
Operating Controls .................................................................................................................................... 11
Motor Switch ............................................................................................................................................. 11
Variable Speed Control .............................................................................................................................. 12
Spindle Brake ............................................................................................................................................ 13
High-Neutral-Low Shift Lever ..................................................................................................................... 13
Quill Power Feed Lever ............................................................................................................................. 13
Feed Rate Lever ........................................................................................................................................ 13
Feed Trip Cam Lever ................................................................................................................................. 14
Feed Direction Control ............................................................................................................................... 14
Coarse Feed Handle.................................................................................................................................. 14
Quill Lock Lever ......................................................................................................................................... 14
Micrometer Adjusting Nut........................................................................................................................... 14
Fine Feed Handwheel................................................................................................................................ 14
Depth Scale and Stop ................................................................................................................................ 15
Power Feed Operation ............................................................................................................................... 15
Draw Bar Operation - Changing Tooling..................................................................................................... 16
Clamping Work Piece to the Table ............................................................................................................. 16
Adjustments .................................................................................................................................................. 16
Mill Head – Left/Right Adjustment .............................................................................................................. 16
Mill Head – Fore/Aft Adjustment................................................................................................................. 17
Positioning the Ram .................................................................................................................................. 18
Positioning the Ram Fore and Aft ........................................................................................................... 18
Positioning the Ram on its Turret............................................................................................................ 18
Gib Adjustment .......................................................................................................................................... 18
Adjustment of Knee Gib ......................................................................................................................... 18
Adjustment of Saddle Gib ....................................................................................................................... 18
Adjustment of Table Gib ......................................................................................................................... 18
Power Feed Trip Lever Mechanism............................................................................................................ 19
Table Lead Screw Backlash Adjustment .................................................................................................... 19
Cross Feed Backlash Adjustment ........................................................................................................... 19
Longitudinal Backlash Adjustment .......................................................................................................... 19
Maintenance ................................................................................................................................................. 21
Lubrication................................................................................................................................................. 21
Periodic Maintenance Requirements ...................................................................................................... 21
Replacement of Drive Motor ...................................................................................................................... 22
Replacement of Vari-Speed Belt ................................................................................................................ 23
Replacement of Brake Shoes, Springs and/or Timing Belt.......................................................................... 23
Replacement of Quill Feed Clock Spring .................................................................................................... 24
Replacement Parts........................................................................................................................................ 24
Head Assembly ......................................................................................................................................... 25
Parts List for Head Assembly ..................................................................................................................... 26
Spindle Assembly ...................................................................................................................................... 29