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11-7. Synchronizing Cables
1. Inspect the synchronizing cables for lubrication, rust, kinks, and broken cables.
2. Replace the synchronizing cables after 4 years or 8,000 uses.
(Also replace synchronizing cables after less than 4 years if their tension is no longer adjustable (cable
adjustments). Also replace if an abnormality is discovered such as rust, kinks, or broken cables.)
3. If there is a difference between the M and S carriages when raising with no load, the synchronizing cable
sadjustments are defective, so readjust using the following steps.
①
As shown in the diagram, grasp the metal fitting using pliers so that the cable does not rotate, and
rotate the adjustment nut to adjust the synchronizing cable tension. After adjustment, secure using the
lock nuts.
②
Checking the tension
Raise the lift 2 or 3 times, and measure the height of the M and S carriages, and check that the difference
between the M and S sides is 1mm max.
③
If the difference in the measured M and S values is 1mm or greater, increase the tension of the lower
carriage to align the height.
Adding major tension to a new cable slightly occurs permanent extension initially. Further,
permanent extension occurs even with cable getting old. Such permanent extension that
occurs initially is called "initial extension". Initial extension is not an abnormality. No major
tension is applied to the cable within the scope of regular lift use, so no sudden initial
extension will occur.
However, initial extension (20 to 30mm) will occur with high levels of use or eccentric loads.
The synchronizing cable will loosen or vehicles tilt during raising if the synchronizing cable
are over-extended, so adjust as shown in the diagram above.
Synchronizing cable adjustment method
Handling initial cable tension
キャリッジ
ロック用ナット
調整用ナット
ワイヤエンド金具
同調ワイヤー
プライヤー
19 mmスパナ
張力増
張力減
Synchronizing cable
Cable end fitting
Pliers
Reduced tensile strength
Increased tensile strength
19mm spanner
Adjustment nut
Lock nut
Carriage
