Cold Jet PR350H Pre-Installation page 61

The extruder piston and linear transduser
Place the hydraulic cylinder on a workbench. Disassemble the piston from the hydraulic cylinder by
loosening the 8 pcs. boltsand washers [6] and brackets [7]. Slide the piston [8] of the piston rod.
Remove the linear transduser [9] by using a wrench and gently slide out the linear transduser.
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.
Refit the linear transduser [9] using a wrench.
Installing the hydraulic cylinder
Hoist the new cylinder in and place it a bit from the process unit. Gently slide the piston in the process
cylinder. Fit washers and tighten nuts [3] on the rods loosely, and make sure that the cylinder is level and in
line with the extruder cylinder.
Tighten the nuts [3] to 120 Nm. To check if the hydraulic cylinder is installed correctly, drive the piston all
the way forward. Make sure that there is no indication that piston is getting stuck by monitoring pressure.
Install the counter nuts [2] and reassemble the process unit. Mount the hoses and plugs. Refill the hydraulic
oil if necessary.
BEFORE STARTING PRODUCTION THE HYDRAULIC MOTION SHOULD BE CHECKED IN SINGLE MODE!
PR120H
MECHANICAL MAINTENANCE
Version: 5
Page: 11 of 24
Date: 2022.12.13