Sony HDW-750 Maintenance Manual page 288

7-2. Upper Drum Assembly Replacement
16. Installing the brush assembly
(1) Install the brush assembly tentatively to the
brush support with the screw that is shown as
1 by the illustration.
(2) Move the brush base in the direction of the
arrow. Check that the brush touches against
the slip ring correctly. Then tighten the screw
2 tentatively.
(3) Finally tighten the screws that are tentatively
tightened in steps (1) and (2).
The standard tightening torque value :
20 x 10 _2
N.m (2 kgf.cm)
(4) Check that the two brushes touch to each of
the three grooves of the slip ring respectively.
n
Once the above steps (1) to (3) are completed, the
height of the brushes and the contact pressure of
brushes against the slip ring will be automatically
adjusted.
17. Installing the brush cover
(1) Adjust the brush cover so that the slip ring
shaft comes to the center of the top of the
brush cover and tighten the two precision
screws.
The standard tightening torque value :
_2
10 x 10 N.m (1 kgf.cm)
(2) Coat the two precision screws with locking
compound.
7-18
Brush assembly
Brush support
Side view
Brush
Brush cover
Brush cover
Center
Slip ring shaft
2PSW2 x 5
1PSW2 x 5
Brush base
Slip ring
P2 x 2
Precision screws
coated with dcrew lock
HDW-750/750CE V1