Jet E-1440VS, Operating Instructions And Parts Manual, Page: 18 / 218

18
8.4 END GEAR TRAIN
Drive from headstock to gearbox is transmitted
through a gear train enclosed by the headstock
end-guard. Intermediate gears are carried on an
adjustable swing frame (M).
Gears must be thoroughly cleaned before fitting
and backlash maintained at approximately 0.1mm.
Lubricate gears regularly with non-slinging grease,
e.g. BP L2, Mobilgrease Special, or equivalent.
8.5 DRIVING BELTS
To alter belt tension, remove the coverplate in
back of the headstock and adjust the two screws (X)
on the hinged motor platform. Ensure that the
motor is correctly aligned with the lathe axis.
Light finger pressure at a point midway between
motor and headstock pulleys about 20mm
movement of each belt when under correct
tension.
8.6 SLIDE WAYS ATTENTION
Tapered gib strips are fitted to slideways of saddle
crosslide and top (compound) slides so that any
slack which may develop can be justified.
Ensure that slideways are thoroughly cleaned and
lubricated before attempting adjustment. Then
reset the gibs by loosening the rear gib screw and
tightening the front screw. Check constantly for
smooth action throughout full slide travel; avoid
overadjustment which can result in increased
wear-rate and stiff or jerky action.
8.7
CROSS-SLIDE NUT
This is adjustable for elimination of slack which
may develop in service. Reduce backlash by the
cap-head screw in the rear of the nut, then make
only small adjustments by the cap-head screw.
Before operating the cross-slide, check several
times by hand to ensure smooth operation
throughout travel.
Tailstock
Headstock
Tailstock clamp lever
Topslide
Set-over screws
Fig. 22
300mm
M
Hexagon
nut
(by
22mm
spanner
)
Hexagon socket head
bolt
(by 6mm allen
wrench)
Fig. 23
Belt
P
r
e
s
s
M
o
t
o
r
P
u
l
l
e
y
X
Fig. 24
Pulley
P
r
e
s
s
M
o
t
o
r
P
u
l
l
e
y
X
Fig. 24
Motor
P
r
e
s
s
M
o
t
o
r
P
u
l
l
e
y
X
Fig. 24
Pulley
P
r
e
s
s
M
o
t
o
r
P
u
l
l
e
y
X
Fig. 24
Press
P
r
e
s
s
M
o
t
o
r
P
u
l
l
e
y
X
Fig. 24
X
P
r
e
s
s
M
o
t
o
r
P
u
l
l
e
y
X
Fig. 24
Fig. 24
Fig. 25
Fig. 25
Gib adjusters