Draper D16/16F Manuel d'instructions - Page 14

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OPERATION AND USE

ADJUSTING SPINDLE RETURN SPRING

Fig.22.

For the purpose of automatically returning the

spindle upward after a hole has been drilled,

a spindle return spring is provided in the

spring housing

Fig. 22. This spring has

been properly adjusted at the factory and

should not be disturbed unless absolutely

necessary. To adjust the return spring,

proceed as follows:

1. Disconnect the drill press from the power

supply.

2. Loosen the nut

approximately

". Do

not remove nut

from shaft

Fig.22.

3. While firmly holding spring housing

Fig.23.

Fig. 23 pull out housing and rotate it until the

boss

is engaged with the next notch on

the housing. Turn the housing anticlockwise

to increase and clockwise to decrease spring

tension. Then tighten nut

Fig.23 to hold

the housing in place.

IMPORTANT:

Nut

Fig. 23 should not contact spring

housing

when tight.

DRILLING HOLES TO DEPTH

Where holes are to be drilled to exactly the

same depth, a depth stop is provided in the

pinion shaft housing

Fig.24 and is used as

follows:

1. Loosen lock handle

Fig. 24 and rotate

housing

until the pointer

lines up with

the depth you wish to drill on the scale

Then tighten lock handle

2. All holes will then be drilled to the exact

depth, as indicated on the scale.

Fig.24.

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