Notes On Tightening Torque And Washer - Sony Betacam SX DNV-5 Maintenance Manual

3-1-6. Notes on Tightening Torque and Washer

1. Tightening torque of screw and recommended screwdriver
Two types of screws are usually used for this model.
To loosen or tighten these screws, use the specified tool. Tighten these screws at the
specified tightening torque using a torque screwdriver when tightening them.
Torque screwdriver bit (for M1.4)
Torque screwdriver bit (for M2)
Screwdriver hexagon bit (across 1.5 mm)
Torque screwdriver (for 3 kg)
Tightening torque
M1.4(+) screw
M2(+) screw
Hexagonal head screw
n
This model uses screws of small size. These screws may fall in the unit during
removal and installation. To prevent from the falling, it is recommended to
magnetize the screwdriver bit.
2. Stop washer
Never re-use the pre-used washers. Be sure to use a new stop washer during part
installation.
Stop washer
Removing the stop washer
(a) Remove the stop washer using a pair of small nippers or tweezers.
n
. Be careful not to fall the stop washer in the unit.
. Take care that the tool does not touch other parts, especially, the drum.
Installing the stop washer
It is recommends to use the following tool when
installing a stop washer.
Stop washer fastening tool J-6323-530-A
(a) Put a stop washer to the top of a stop washer
fastening tool.
(b) Put the top of the tool vertically on the top of
the shaft to be installed.
(c) Press down the tool and install the stop
washer to the shaft.
DNV-5
DNW-7/90/90WS
J-6325-110-A
J-6325-380-A
J-6326-120-A
J-6325-400-A
9x10 –2 N.m (0.9 kgf.cm)
20x10 –2 N.m (2.0 kgf.cm)
19x10 –2 N.m (1.9 kgf.cm)
3-559-408-11
Stop washer fastening tool
Stop washer
3-1-6. Notes on Tightening Torque and Washer
Stop washer
3-7