Mitsubishi Electric RH-1FHR Series, Instruction Manual

Page: 97 / 126

5 Maintenance and Inspection
Maintenance and inspection procedures 5-86
5.3.5 Replacing the bellows (Option)
With reference to
Fig. 5-13
, exchanges the bellows (option). Replacement method of bellows is shown
below.
1) Loosen the two set screws (M4) and remove the shaft fixation part from the shaft. Remove the liquid gasket
from the rim of the screw holes before removing the screws.
Then completely remove a liquid gasket filling the gap between the shaft fixation part and the shaft.
2) Refer to Page 72, "Fig.5-3 ： Installing/removing the cover" , and remove the No.2 arm cover D and the bel
-
lows together.
3) Fix the new bellows to the No.2 arm cover D with six truss screws (M4).
4) Fix the bellows to the shaft with adjusting the position of the bottom of the shaft fixation part to 30mm from
end of shaft. Align two set screws (M4) to the D cut surface and fix them securely. (Tightening torque: 1.39
to 1.89 Nm)
5) Apply liquid gasket to the screw holes of the screws inserted in step 4) .
Apply enough liquid gasket to seal the screw holes. Ensure that liquid gasket does not penetrate more than
3 mm into the screw hole.
Recommended liquid gasket: 1212 (manufactured by ThreeBond Co., Ltd.)
6) Fill the gap between the shaft fixation part and the shaft with a liquid gasket to prevent dust emergence.
Recommendation gasket: 1212 (Supplier: Three Bond Holdings Co., Ltd.)
7) Stick the attached ABS mark stickers on the bottom surface of the bellows fixation part and the side face
of the shaft fixation part. Makes the J4 axis into the position of 0 degree by jog operation etc., and stick the
ABS mark stickers.
Fig.5-13 ： Replace the bellows (option)
30mm
No.2 arm
No.2 arm cover D
Bellows fixation part
Shaft fixation part
D cut surface
M4 set screw (2 places)
30mm
D cut surface
Liquid gasket application range
(The gap between the shaft
and the shaft fixation plate)
ABS mark
Shaft
fixation part
Bellows
fixation part
ABS mark
Bellows
1) , 4) , 5)
2) , 3)
6)
4)
4)
Details of D cut surface and liquid gasket
application range
Details of the portions of sticking the ABS mark stickers
Seal the screw hole
with liquid gasket.