Bedienungsanleitung Metabo BAS 505G (Seite 21 von 48) (Deutsch, Englisch, Holländisch, Französisch)

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8. Put band saw blade on the rubber

tyres.

9. Tighten setting knob (64) until blade

does no longer slip off the band saw

wheels.

10. Tension band saw blade (see “Care

and Maintenance”).

11. Close lower blade guard (62)

12. Close housing door.

13. Then:

− align band saw blade (see “Care

and maintenance”);

− align blade guides (see “Care

and maintenance”);

− let saw test run for at least one

minute;

− stop saw, unplug and recheck

settings.

14. Close locking bar (60) and tighten

screws (59).

9.3 Band saw blade tension-

ing

Danger!

Too much tension can cause

the band saw blade to break. Too little

tension can cause the driven band

saw wheel to slip and the band saw

blade to stop.

1. Raise upper blade guide fully (see

“Operation”).

2. Check tension by pushing with a fin-

ger, halfway between table and

upper blade guide, against the side

of the blade. The blade should flex

not more than 3-5 mm.

The correct adjustment can also be

checked at the blade tension indica-

tor. The scale shows the correct

adjustment in dependence on the

saw blade width.

3. Correct tension if necessary:

− Turning setting knob (65) in direc-

tion indicated by arrow increases

the blade tension.

− Turning setting knob (65) in the

opposite direction reduces the blade

tension.

9.4 Band saw blade align-

ment

If the band saw blade does not run flush

with the front edge of the rubber tyres,

the tracking needs to be corrected by

adjusting the tilt of the upper band saw

wheel:

1. Loosen locking nut (66).

2. Setting knob (67):

− Turn setting knob (67) clockwise

if the band saw blade runs

towards the front of the saw.

− Turn setting knob (67) counter-

clockwise if the band saw blade

runs towards the rear of the saw.

3. Tighten locking nut (66).

9.5 Aligning the upper blade

guide

The upper blade guide consists of:

− a thrust bearing (supports the band

saw blade from the rear),

− two guide bearings (providing lateral

support).

All bearings need to be readjusted after

every band saw blade change or track-

ing.

Note:

Periodically check all bearings for

wear, if necessary replace both guide

bearings at the same time.

Adjusting the thrust bearing

1. If necessary, align and tighten the

band saw blade.

2. Loosen the thrust bearing's (68)

locking screw (69).

3. Adjust thrust bearing position (dis-

tance thrust bearing - band saw

blade = 0.5 mm – if the band saw

blade is turned by hand, it shall not

touch the thrust bearing).

4. Tighten the thrust bearing locking

screw.

Adjusting the guide bearings

1. Loosen knurled nut (71).

2. Set guide bearings (72) with the

knurled thumb screws (70) against

the band saw blade.

3. Turn band saw wheel by hand in a

clockwise direction several times to

bring the guide bearings in correct

position – both guide bearings

should just touch the band saw

blade.

4. Retigthen knurled nut (71) to lock

the knurled thumb screw (70).

9.6 Aligning the lower blade

guide

The lower blade guide consists of:

− a thrust bearing (supports the band

saw blade from the rear),

− two guide bearings (providing lateral

support).

These parts need to be readjusted after

every band saw blade change or track-

ing:

Note:

Periodically check thrust bearings

and guide bearings for wear, if neces-

sary replace both guide bearings at the

same time.

Basic alignment

1. Open lower blade guard (73)

2. Loosen the thrust bearing's locking

screw (75) with an Allen key.

66 67

ca. 0,5 mm

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