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Parker EME/ EMN
Set-Up
192-550002N2 ETH Mounting instructions March
2011
23
2.3.2.2
Resetting the toothed belt pre-tension (new toothed
belt)
For a new toothed belt, we recommend to re-set the toothed belt pretension:
◆
Check if the belt toothing is geared into the upper and lower toothed pulley.
◆
The screws (Fig. 2 Pos. 7) must be inserted (but not tightened), so that the drive
unit can be lifted.
◆
Loosen both lock nuts (Fig. 1 Pos. 14) (do not remove entirely).
◆
Unscrew both threaded pins (Fig. 1 Pos. 10) until they are almost level with the
inside of the parallel housing.
◆
Tighten central toothed belt tensioning screw (Fig. 1 Pos. 12) until the toothed
belt is noticeably pretensioned.
◆
Measure toothed belt tension with a suitable device.
We recommend: Gates: „Sonic 507c" or Hilger&Kern: „Trummeter"
◆
Tighten screw lightly and repeat measurement.
◆
Repeat this procedure until the required
toothed belt pretension
(see on page
Caution!
Only a correctly set toothed belt pretension ensures fail-safe
operation of the cylinder.
◆
Screw in both threaded pins (Fig. 1 Pos. 10) until they touch the inner bracket.
Tighten pins slightly.
◆
Retighten lock nuts (Fig. 1 Pos. 14).
◆
Tighten 4 screws (Fig. 2 Pos. 7) with the given tightening torque.
ETH032
ETH050
ETH080
3 Nm
5 Nm
10 Nm
◆
Reaffix both lids (Fig. 1 Pos. 4 & 6) with the respective screws (Fig. 1 Pos. 11 &
9).