h16tp(x - AJ Maskin AS

Sheet C121CORRECTIVE MAINTENANCE SHEETCHANGING AN END OF STROKE CONTACTORFolio 1/4Photo 12121 - Preliminary operations• Put the machine in the maintenance configuration (see correspondingparagraph).• Switch off electric power (see corresponding paragraph).2 - Removing an SQ9 end of stroke contactor (telescope)• Remove the protective plate (ref. 1 Photo 12).• Unscrew the fixing screws (ref. 2 Photo 12) of the contactor support.• Remove the end of stroke contactor.• Open the end of stroke contactor, mark and disconnect the electric connections.3 - Installing an SQ9 end of stroke contactor (telescope)• Open the new end of stroke contactor, reconnect the electric connectionsand close the end of stroke contactor.• Put the end of stroke contactor back into place, in the position markedduring dismantling and fix on its support using screws (ref. 2 Photo 12).• Fix the support to the telescope.Photo 134 - Adjustment and testing• Put the machine back in the operational configuration.• Make a telescoping movement.• Adjust the contactor if necessary.NB:Ensure that the end of stroke contactor roller is not at its limit againstthe telescope. A slight gap should be left in the plunger.5 - Checking break actions• When the telescope is extended, travel should switch to micro-speed, and ifthe machine is tilted, all movements are disabled except: telescope in, boomlifting, rotation, basket rotation and compensation.• For the USA: if the machine is tilted, the tilt buzzer sounads and the fault lighton the platform control panel comes on.SQ9Photo 146 - Removing an SQ3 end of stroke contactor (boom lifting)• Remove the protective plate (ref. 1 Photo 14).• Unscrew the fixing screws (ref. 2 Photo 15) of the contactor support.• Remove the end of stroke contactor.• Open the end of stroke contactor, mark and disconnect the electric connections.17 - Installing an SQ3 end of stroke contactor (boom lifting)• Open the new end of stroke contactor, reconnect the electric connectionsand close the end of stroke contactor.• Put the end of stroke contactor back into place, in the position markedduring dismantling and fix on its support using screws (ref. 2 Photo 15).8 - Adjustment and testing• Put the machine back into the operational configuration.• Make a boom lifting movement.NB:Ensure that the end of stroke contactor roller is not at its limit againstthe welded cam (ref. 3 Photo 15). A slight gap should be left in theplunger.