© 2021 Genesis Attachments, LLC
Genesis GRX 39
PRIMARY AND SECONDARY BLADES
Proper maintenance of the primary and secondary blades, or cutting blades, is required for
optimal performance. Blade rotation extends blade life and improves cutting performance.
Shimming to maintain blade tolerances helps prevent jamming. Dull blades make the excavator
hydraulic system work harder and may cause structural damage to the shear.
Inspect blades every eight hours of operation. Re-torque loose bolts and replace broken bolts.
Grind away dents or mushrooming of blade edges at the end of each day to prevent upper jaw
deflection, excessive blade wear and undue stress to upper and lower jaws.
Rotate blades to use all four cutting edges. Always use Genesis-approved blades. Blades that do
not meet Genesis specifications can cause major problems, and using them may void the
warranty.
Before performing any blade maintenance, read, fully understand and follow these safety rules.
Wear personal safety equipment including gloves, safety glasses, safety boots and proper
clothing.
Safe blade maintenance requires two people - one to steady the blade while the other loosens the
bolts.
Blades are heavy and may fall out of the blade seat if not adequately supported. Bystanders must
stand clear.
Never strike a blade with a hardened steel tool. The blade may fragment, creating sharp flying
debris.
Removal
Loosen the bolts on one blade at a time, enough to loosen
the blades.
If blades remain tight, insert a 7/16” brass drift pin into the
through-hole on the lower jaw. Tap the drift pin with a
hammer until the blade is loose.
Carefully remove bolts and blades.
