7-7
HDW-750/750CE V1
7-1-6. Screw Tightening Torque and Washer
1. About screwdriver and screw tightening torque
This unit uses the screws of the two types.
Be sure to use the specified tools when loosening and tightening.
Be sure to use the torque screwdriver when tightening the screws, and tighten in the
specified torque reading.
Torque screwdriver bit (for M1.4) : J-6325-110-A
Torque screwdriver bit (for M2) :
J-6325-380-A
Hexagon bit (across 1.5) :
J-6326-120-A
Torque screwdriver (for 3 kg) :
J-6325-400-A
Tightening torque
For M1.4 (
+
) screw :
10
x
10
_
2
N
.
m (1.0 kgf
.
cm)
For M2 (
+
) screw :
20
x
10
_
2
N
.
m (2.0 kgf
.
cm)
For hexagon screw :
30
x
10
_
2
N
.
m (3.0 kgf
.
cm)
n
This unit uses the small size screws. When removing or attaching, the screw may
fall in the unit. To prevent from the falling, it recommends that the bit of the screw-
driver magnetizes.
2. About stop washer
Never re-use the pre-used stop washers.
When attaching the part, be sure to use the new stop washer.
Stop washer : 3-559-408-11
How to remove stop washer
(a) Remove the stop washer using a pair of small nippers or tweezers.
m
.
Take care not to fall in the unit.
.
Take care not to touch the tool against the other parts (especially the drum).
How to install stop washer
When attaching, it recommends to use the
following tool.
Stop washer fastening tool : J-6323-530-A
(a) Put the stop washer to the top of the stop
washer fastening tool.
(b) Put the top of the tool on the top of the shaft
in an upright position.
(c) Press down the tool and attach the stop
washer to the shaft.
Stop washer
Stop washer
Stop washer fastening tool
7-1. General Information on Mechanical Part Replacement
