Jet HVBS-712V, Инструкция по эксплуатации и каталог запасных частей

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5. Hold a container under lower right corner of
gear box with one hand while slowly raising bow
with the other. Drain completely. Follow local
regulations for used oil disposal.
6. Return bow to horizontal position. Wipe out
remaining oil with a rag.
7. Replace gasket and cover. Fasten cover with
screws.
8. Remove vent plug (Figure 10-1) with 8mm
wrench, and fill gear box with approximately 1/2
pint of 90W oil, through the hole. Reinstall vent
plug.
9. Reinstall control box and bracket.
Figure 10-1: gearbox
10.2 Coolant level
Maintain coolant level. Low coolant level can cause
foaming and high blade temperatures. Replace dirty
coolant; dirty or weak coolant can clog the pump,
cause crooked cuts, a low cutting rate and/or
permanent blade damage. To fill tank, pour coolant
into hole through strainer cup to about 80% of full
capacity. Full capacity is 9 liters (2.5 gal). Follow
coolant manufacturer’s instructions for proper use
and disposal.
10.3 Commutator brush inspection
To maintain motor efficiency, inspect the two carbon
brushes every two months, or more frequently if saw
is heavily used. Stalling or loss of power may be a
symptom of worn carbon brushes. If one brush is
worn out, replace both at the same time.
Continued use of a damaged or
worn brush may result in damage to motor
armature.
1. Disconnect saw from power source.
2. Remove motor fan cover (A, Figure 10-2).
3. Unscrew and remove plastic cap with flat blade
screwdriver. See Figure 10-2.
4. Gently pry up an edge of the brass clip, until the
spring causes it to disengage from hole. (Notice
orientation of brush as you remove it; it should
be inserted in the same manner – curvature of
brush will match curvature of motor.)
5. Pull out brush and inspect. Brush should be
replaced if any of the following are discovered:

Brush has worn to about 1/2-inch long.

Signs of crumbling, burning, breaking.

End of brush is rough or pitted.

Abnormal coloration of spring

Broken lead in spring

Collapsed spring
6. Install new brush (or reinstall current brush) and
gently press it all the way into hole until brass
clip is secured.
7. Install cap.
8. Repeat for other brush.
9. Reinstall motor fan cover.
NOTE: It is recommended that saw be run without
load for several minutes to seat new brushes.
Figure 10-2: carbon brush inspection
10.4 Additional servicing
Any additional servicing on the band saw should be
performed by an authorized service representative.