Tadano TT-800XXL1, Service Manual

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7
W305-023 1 E
H-2. H-2.
Boom Length and Angle Detector
2.5 Reassembling potentiometer
1 . Install a new potentiometer.
[NOTICE]
To avoid exposing the potentiometer to high
temperature for a long time, solder the
potentiometer terminal and the lead wires quickly.
Fix the potentiometer terminal including the lead
wires to the bracket using insulating sealant.
Recommended sealant: Shin-Etsu Silicone
KE45RTV (Shin-Etsu Chemicals Industry)
IW305-0230E 1 4
Potentiometer
Bracket
Insulating sealant
2. Loosen the set screws on the reducer side and
potentiometer side to allow both gears to idle.
Check that the gear on the potentiometer side is
spring-returned to the original position after it is
rotated a quarter turn by finger and released. If it
is not returned, loosen the bolt and adjust the
position of the bracket.
IW305-0230E 1 5
Bracket
Spring
Bolt
Gear B
Gear A
3. Fix the gear in the notched section of the speed
reducer shaft using a set screw. Apply thread
locking agent to the set screw.
Tightening torque : 1 . 1 8N-m {0.87ft-lbf}
4. Follow the same procedure as described in the
step 1 2. and below of the "Installing the cord"
section.
2.6 Replacing the boom angle detector
Disconnect the lead wires to the boom angle
detector from the pin terminal section, and replace
the boom angle detector assy.
3. Adjustment
1 . Adjust the cord lock so that the 0-marker on the
cord is on the edge of the cord guide when the
boom is fully retracted.
0-marker
Cord lock
IW305-0230E 1 6
2. Adjust the boom length display of the AML.
(Refer to the repair manual of the AML.)
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0
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