Jet GHB-1330 Operating Instructions Manual page 9

8.2 Weekly Lubrication:
Weekly inspect the oil sight glasses,
fill oil on demand (see 8.1).
Weekly apply grease:
DIN 51807-1 non slinging grease
(e.g. BP L2, Mobilgrease Special).
- Rack
Apply grease on entire length.
- Change gears
Coat all gears with grease
Fig 23
Weekly apply oil:
DIN 51502 CG ISO VG 68
(e.g. BPMaccurat 68, Castrol Magna BD
68, Mobil Vectra 2)
- Gear shaft
Remove the set screw (C, Fig 23) and
oil.
- Lead screw and feed rod
Apply oil on entire length.
8.3 Daily Lubrication:
Daily apply oil:
DIN 51502 CG ISO VG 68
(e.g. BPMaccurat 68, Castrol Magna BD
68, Mobil Vectra 2)
- Feed selector
Lubricate ball oiler (C, Fig 24)
- Carriage
Lubricate 2 ball oilers (D, Fig 24)
- Top slide
Lubricate 3 ball oilers (F, Fig 25)
- Cross slide
Lubricate 4 ball oilers (G, Fig 25)
- Longitudinal travel hand wheel
Lubricate ball oiler (H, Fig 25)
- Tailstock
Lubricate 3 ball oilers (I, Fig 26)
- Lead screw/ feed rod hub
Lubricate 3 ball oilers (J, Fig 26)
Fig 24
Fig 25
Fig 26
11
8.4 Slide adjustments
Each slide is fitted with tapered gib.
Loosen the rear gib screw (C, Fig 27)
by one turn.
Fig 27
Tighten front gib screw appr. a quarter
turn.
Try and repeat until slide moves freely
without play.
Gently tighten the rear gib screw.
8.5 Saddle adjustment
Loosen 4 hex nuts (A, Fig 27).
Turn the 4 set screws (B) equally until
a slight resistance is felt.
Hold the set screws firmly and tighten
the nuts to lock in place.
8.6 Shear pin replacement
Lead screw and feed shaft are
equipped with shearing pins to protect
the drive against overload.
If a shear pin breaks it must be
replaced.
Knock out the broken pin.
Line up the holes and fit a new pin.
8.7 Headstock alignment
The headstock has been aligned at
the factory.
Check that the machine bed is level
and correct before proceeding.
Turn a test piece for inspection.
The diameter should be the same on
the whole turning length.
If headstock alignment is needed:
Loosen the 4 headstock bolts that
hold the headstock to the bed.
Do not loosen completely; some drag
should remain.