PR120H
MECHANICAL MAINTENANCE
Version: 5
Page: 13 of 24
Date: 2022.12.13
7.
PROCEDURE FOR CHANGING THE EXTRUDER PISTON ON PR120H
During this operation it’s important to activate the emergency stop button!
Follow instructions from Procedure 5 for disassembling the hydraulic cylinder and piston.
The extruder piston
Place the hydraulic cylinder on a workbench. Disassemble the piston from the hydraulic cylinder by
loosening the 8 pcs. Bolts and washers [6] and brackets [7]. Slide the piston [8] of the piston rod.
Fit the piston to the new or renovated hydraulic cylinder by fitting washers, lubricating and tightening the 8
pcs. bolts [6] equally using torque wrench to 21,4 Nm.
Re assembly the hydraulic cylinder according to Procedure 5.
BEFORE STARTING PRODUCTION THE HYDRAULIC MOTION SHOULD BE CHECKED IN SINGLE MODE!
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