-47-
Model W1873/W1874 (For Machines Mfd. Since 10/20)
SE
RV
IC
E
Figure.51..
Headstock height chain
adjustment (shown without stand for
purpose of illustration).
Idler
Sprocket
Lock Bolts
Chain
Tensioning.Headstock.
Height.Chain
The headstock height chain transfers movement from
the elevation handwheel to the columns that control
headstock height. The chain drive can be adjusted
to remove slack if the chain stretches over time or is
loosened during headstock leveling procedures.
DO.NOT.let.chain.fall.off.sprockets..It.
can. be. very. difficult. to. return. chain.
to. its. proper. location. on. sprockets.
without.changing.table.adjustments.
To.adjust.headstock.height.chain.tension,.do.these.
steps:
1..
DISCONNECT MACHINE FROM POWER!
2..
Remove motor access panel to access headstock
height chain shown in
Figure.51
.
3..
Loosen two chain tension lock bolts, then push idler
sprocket against chain with moderate pressure to
eliminate slack in chain. While maintaining pressure
on idler sprocket, re-tighten bolts (see
Figure.51
).
4..
Clean and lubricate chain and sprockets (refer to
Headstock.Height.Chain.&.Sprockets
on
Page.37
for
instructions), then re-install motor access panel.
Items.Needed.
Qty
Hex Wrench 5mm ...............................................1
Wrench or Socket 12mm .......................................1
