McIntyre 320 - Resealing the Hydraulic Ram; 6.7. Resealing the Hydraulic Ram; Removing the Ram from the Shear

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320/407/500/600.41912-ENG
On starting up the Shear the Top Jaw will automatically return to the Open position. On
rstclosingoftheJawsexerciseaslowcontrolledapproachspeedandensurenohard
contact of Blades exist. Rectify if hard contact occurs.
6.7. Resealing the Hydraulic Ram
Always switch off and isolate the Shear from the mains
electrical supply before maintenance.
6.7.1. Removing the Ram from the Shear
(See Illustration 7.3, Page 49)
Always chock the Top Jaw to prevent movement.
BeforeremovingtheHydraulicRamfromtheShear,ensurethatachockhasbeentted
between the Top and Bottom Jaws, this will stop the Top Jaw swinging down and potentially
causing injury or damage. To remove the Hydraulic Ram from the Shear:
• With the Shear switched off, disconnect the Hoses, Items 3.11 and 3.12 supplying
the Hydraulic Ram, plugging both the ports and the Hoses.
• Disconnect the Control Valve and other parts of the Stroke Adjuster Mechanism
from the Ram. (See Illustration 7.5, Page 51)
• Using suitable lifting equipment secure the Hydraulic Ram so that is does not drop
when released from the Shear.
Note: Hydraulic Ram max weight approx. 45kg
• Unscrew the Fasteners, Items 3.9. Then remove the two Ram Pivot Pins, Items 3.5
releasing the Ram from the Shear.
• Remove the Ram to a clean area. Protect the Piston Rod and safely support the
Ram Cylinder for disassembly, remembering that the centre of mass will change
as it is dismantled.
6.7.2. Resealing the Hydraulic Ram
(See Illustration 7.4, Page 50)
• With a peg spanner or strap wrench, unscrew the Ring Nut, Item 4.10, and pull the
Piston Rod out of the Cylinder with all internals attached.
• Remove the Grub Screw, Item 4.2, from the Rear Piston Half, Item 4.3. Once
removed, unscrew the Rear Piston Half and slide all components off the Piston
Rod.