Hoffman Mechatronics
Bridgeport Mill J1 Rebuild
oil. It creates a nice flat surface without removing too much material, and if kept lubricated,
leaves a nicely polished surface that will slide easily. The stones are also relatively cheap.
Please keep in mind that this procedure is for cleaning an already trued surface. If your surface is
not flat to start with, you may be required to scrape it true first.
5.2.3 Ram Reassembly
Reinstall the Ram Locks in the turret base, and center them in the base so that the Ram will not
hit them when slid back on. Lubricate the slides liberally with a high quality lubricant and slide
the ram back onto the turret base. While this may seem like an easy thing to do, keep in mind
that the ram weighs near 300 pounds and doesn’t slide all that well. If you look at Figure 29
below, you will see the arrangement that I used to get the Ram in place. And Figure 30 below
shows a fixture that I used to help me slide the ram into place. Once the Ram is in place and the
pinion gear is installed, it should slide easily.
Figure 29 - Ram Installation
BPJ1RBLD_002
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January 31, 201111
