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5Maintenance and Inspection
5.3.3 Packing Replacement Procedure
The packing gets deteriorated with the passage of time and must be replaced when installing/removing a cover.
Replace the packing in accordance with the instructions given below. If the packing is not replaced in a timely
manner, water, oil, or chemicals will be allowed to intrude the robot, possibly making it inoperative.
(1) Packing Replacement Instructions
Stick again new packing as before.
1) Remove the old packing, and clean and degrease the surface on which it has been placed.
2) The sticking surface of packing is double-coated adhesive tape. Referring to
packing (good example)"
form . Be careful for the packing not to slide. The example of unsuitable packing slid is shown in
5 ： Example of sticking packing (bad
3) Although the No.2 arm cover (U) sticks two or more packings per place, it has length with which packing
ends overlap. Stick packing in the following procedures. For more information, see
packing overlaps".
a) Stick packing in line with form of the sticking surface. Finally, cut packing so that adjoining pieces have
a 1mm overlap at the end.
b) Apply liquid gasket to the cut edges. (Designated liquid gasket: 1212 (Maker: Three Bond))
c) Stick so that the gap may not be made to each other's packing.
CAUTION
4) Confirm that packing is stuck correctly and install the cover. When tightening the bolts fixing the cover,
avoid tightening them to a specified torque at a time. Tighten the bolt in the order shown as much as
possible in the
each cover is shown in
CAUTION
Completion of packing replacement
Fig.5-4 ： Example of sticking packing (good example)
Maintenance and inspection procedures
5-79
and
"Fig.5-6 ： Sticking the cord-like
example)".
Examples of improperly treated cut edge are shown, as well.
Do not install the cover immediately after sticking packing. Install the cover,
after the 6 hours pass after sticking packing for gasket hardening.
"Fig. 5-8 Example of order which tighten bolts"
"Table 5-3 ： Cover fixing screw
Stick the packing securely, pressing down with the finger. If sticking is insuffi -
cient, when the cover is installed, packing slides by the pressure, and there is a
possibility that it may become impossible to secure protection performance.
packing", and stick the packing in line with
The torque which tightens the fixing bolt of
list".
Packing is stuck securely
without sliding.
"Fig.5-4 ： Example of sticking
"Fig.5-
"Fig.5-7 ： Examples of
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