Sony BVW-55 Maintenance Manual page 294

4-6. S/T Threading Gear Replacement
Preparations
1. Put the unit into the unthreading end state.
2. Turn off the power.
3. Remove the upper frame.
(Refer to the maintenance manual Part 1, Section 1-6.)
4. Remove the cassette compartment.
(Refer to the maintenance manual Part 1, Section 1-7.)
Tools
. Stop washer fastening tool:
. Torque screwdriver (3 kg.cm):
. Torque screwdriver bit (for M1.4):
. Torque screwdriver bit (for M2):
. Parallel pin (d = 1.6 mm):
. Parallel pin (d = 2.0 mm):
. Oil:
. Cleaning cloth (15 cm x 15 cm):
. Cleaning liquid:
Replacement
1. VH cleaner assembly removal
Remove the VH cleaner assembly.
(Refer to Section 3-6.)
2. Pinch arm assembly removal
Remove the pinch arm assembly.
(Refer to Section 3-7.)
3. Drum assembly removal
Remove the drum assembly.
(Refer to Section 3-5.)
4. T tension regulator arm removal
Remove the T tension regulator arm.
(Refer to Section 3-9.)
5. Tension regulator band removal
Remove the tension regulator band.
(Refer to Section 3-9.)
6. S tension regulator arm removal
Remove the S tension regulator arm.
(Refer to Section 4-10.)
7. Full top sensor removal
Remove the full top sensor.
(Refer to step 7 in Section 4-5.)
4-22
J-6323-530-A
J-6325-400-A
J-6325-110-A
J-6325-380-A
3-649-266-01
3-703-358-04
7-661-018-18
3-184-527-01
9-919-573-01
BVW-55 P2