Genesis GHG 100, Safety And Operators Manual

Page: 34 / 39

© 2020 Genesis Attachments, LLC Genesis GHG Handling Grapple
34
Symptom Possible Causes Possible Solutions
Tines lack clamping
power
Excavator is not putting out full pressure to
the tine circuit
Check excavator circuit relief valve
Cross-over relief valve setting is too low Adjust the cross-over relief valves
Tine cylinder(s) is bypassing internally Replace cylinder seals
Swivel is bypassing internally Replace swivel seals
Tines drift closed
Swivel is bypassing internally Replace swivel seals
Tine cylinder(s) is bypassing internally Replace cylinder seals
Tine closing and
opening speed is
slow
Flow from excavator is too slow Check excavator hydraulic system flow
Swivel is bypassing Replace swivel seals
Tine cylinder(s) is bypassing internally Replace or reseal the cylinder(s)
Grapple rotation is
weak
Low supply pressure from the excavator Check rotation pressure, adjust or replace
the relief valve
Hydraulic motor is worn Replace hydraulic motor
Grapple rotation is
slow
Flow from excavator is too slow Check excavator hydraulic system flow
Worn hydraulic motor Replace the hydraulic motor
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