Jet GHB-1236 Operation And Maintenance Instructions Download Page 9

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5.2

Uncrating and cleanup

Machine is heavy. Use an

appropriate  lifting  device  and  use  extreme
caution  when  moving  the  machine  to  its  final
location.  Failure  to  comply  may  cause  serious
injury.

1. Finish removing wooden crate from around

lathe.

2. Unbolt lathe from shipping crate bottom.

3. Choose a location for the lathe that is dry, has

good lighting, and has enough room to be able
to service the lathe on all four sides.

4. Move carriage and tailstock to the tailstock end

of the bed.

5. Place two steel rods or pipes of sufficient

strength into four holes (A, Figure 5-2) of lathe
stand. Sling the lathe with properly rated
straps.

Do not lift by spindle.

With adequate

lifting  equipment,  slowly  raise  lathe  off
shipping  crate  bottom.  Make  sure  lathe  is
balanced  before  moving  to  sturdy  bench  or
optional stand.

Figure 5-2

6. To avoid twisting the bed, the lathe's location

must be absolutely flat and level. Bolt lathe to
stand (if used). If using a bench, through-bolt
for best performance.

7. Clean all rust protected surfaces using a mild

commercial  solvent,  kerosene  or  diesel  fuel.
Do  not  use  paint  thinner,  gasoline,  or  lacquer
thinner,  as  these  will  damage  painted
surfaces.    Cover  all  cleaned  surfaces  with  a
light film of Mobil DTE



Oil Heavy Medium or

equivalent.

8. Remove

end

gear

cover.

Clean

all

components of end gear assembly and coat all
gears with a heavy, non-slinging grease.

9. Using a machinist’s precision level on the

bedways, check to make sure lathe is level
side to side and front to back. If necessary,

loosen mounting bolts, shim, and retighten
mounting bolts. The lathe must be level to be
accurate.

5.3

Chuck preparation (three jaw)

Read and understand all

directions for chuck preparation. Failure to
comply may cause serious injury and/or
damage to the lathe.

Note:

Before removing chuck from spindle, place

a way board across bedways under the chuck.

1. Support the chuck while turning three

camlocks 1/4 turn counter-clockwise with the
chuck key enclosed in the toolbox. Figure 5-3
shows the cam in the secure position. Line up
the two marks (A, Figure 5-3) for removal.

Figure 5-3

2. Carefully remove chuck from spindle and place

on an adequate work surface.

3. Inspect the camlock studs. Make sure they

have not become cracked or broken during
transit. Clean all parts thoroughly with solvent.
Also clean spindle and camlocks.

4. Cover all chuck jaws and scroll inside the

chuck with Mobilith



AW2. Cover spindle, cam

locks, and chuck body with a light film of Mobil
DTE



Oil Heavy Medium.

5. Lift chuck up to spindle nose and press onto

spindle. Tighten in place by turning cam locks
1/4  turn  clockwise.  The  index  mark  (A,  Figure
5-3)  on  the  camlock  should  be  between  the
two  indicator  arrows  (B,  Figure  5-3).  If  the
index  mark  is  not  between  the  two  arrows,
remove chuck and adjust the camlock studs by
either turning out one full turn (if cams will not
engage) or turning in one full turn (if cams turn
beyond indicator marks).

6. Install chuck and tighten in place.

ATTENTION:

Only when the incised line on chuck

lines up with that on the spindle, can the chuck be
mounted.