ABB DressPack IRB 6640 Product Manual page 301

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Product manual - DressPack/SpotPack IRB 6640
3HAC028638-001 Revision: K
Action
DANGER
Loosening the spring bolt in the coming steps
will release the spring tension. Two persons
are required to perform the procedure in a safe
manner.
Person 1: Take a grip of the spring bolt with a
27 mm wrench (extended shaft) and be pre-
pared to hold against the spring force.
Person 2: Loosen the upper screw (M12), with
a 18 mm standard wrench approximately 10-
15 mm.
Note
The spring force will probably not be released
until when the upper screw is tapped down in
the next step, but it is a good idea to be pre-
pared to hold against the force already in this
step.
Person 1: Keep holding the 27 mm wrench in
a firm position as the spring force now will be
released.
Person 2: Release the tension in the spring
bolt by tapping the upper screw with a rubber
mallet until the tension is released (when bolt
goes down).
DANGER
Hold the wrench in a firm position as the spring
force now will try to rotate the wrench to the
left.
© Copyright 2007-2018 ABB. All rights reserved.
4.2.15 Adjusting tension arm unit
Note
B
A
xx1700002243
A Spring bolt
B Upper screw M12
B
A
D
xx0500001504
A Upper screw M12
B Tension arm
C Standard wrench 27 mm with
extended shaft (extension not
shown in figure)
D Direction in which the spring
force will rotate the wrench
Continues on next page
4 Repair
Continued
C
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