PAGE 2.1 - 44 OPERATION MARK IV HD J2 TAMPER
REVISED 10 - 2020 CONTROLS BULLETIN 5082505
2.1
2.1.9 Operator Keypad Controls - Left - See Figure 2.1-33
(8) Combo Clamp Lock Key - Work Mode
Press and release the key to UNLOCK the left and right combo clamp frame locks. Press and
release the key again to LOCK the left and right combo clamp frame locks.
(9) Auto Jack On Key - Work Mode
This key should be used on any initial start up of lifting and/or lining the track. Press and hold
the key to Jack, Line and Hold the track. If the key is released before the jacking height is
completed, the jacking will stop before the desired jacking height has been reached. Repress
the key to resume jacking.
When lifting a turnout rail in a switch, use Caution as the shadowboard is not on this rail. If the
turnout rail becomes detached from the tie, release the Auto Jack On key to stop lifting the rail.
The key functions the same in both the Switch Mode and the Production Mode except for the
following:
a. In the Production Mode, forward travel will automatically release the track.
b. In the Switch Mode, the Auto Jack Release Key must be pressed to release the track.
When the track is being held at the jacking height, the workheads can be individually cycled and
moved laterally to tamp the tie in all the desired positions before releasing the track.
(10) Auto Jack Release Key - Work Mode
Press and release the key to release the track after using the Auto Jack On Key to jack the
track. Press and hold the key to lower the combo clamp hooks down to the lower limit switch
setting and out to the outer limit switch settings.
(11) Combo Clamp Manual Line Key - Left - Work Mode
Press and hold the key to manually move the combo clamp frame to the LEFT. Release the key
to stop moving the combo clamp frame.
(12) Combo Clamp Manual Line Key - Right - Work Mode
Press and hold the key to manually move the combo clamp frame to the RIGHT. Release the
key to stop moving the combo clamp frame.
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