Case WX185 - Clamshell Bucket

SECTION 5
5-16
CLAMSHELL BUCKET
PROBLEM POSSIBLE CAUSE CORRECTION
Clamshell rotation not
operational.
Clamshell rotation pump defective. Consult your Dealer.
Hydraulic oil level too low. Top up with hydraulic oil in correct
quantity.
Malfunction of clamshell-rotation
pressure-limiting valve.
Consult your Dealer.
Clamshell rotation valve defective. Consult your Dealer.
Button on hydraulic control lever
defective.
Consult your Dealer.
Clamshell rotation solenoid defective. Consult your Dealer.
Clamshell rotation motor defective. Consult your Dealer.
Pinion and ring gear worn. Replace pinion and ring gear.
Clamshell rotates very slowly. Malfunction of clamshell-rotation
pressure-limiting valve.
Consult your Dealer.
Clamshell rotation solenoid defective. Consult your Dealer.
Clamshell rotation motor defective. Consult your Dealer.
At cylinders stroke end the
clamshell does not rotate.
Malfunction of clamshell-rotation
pressure-limiting valve.
Consult your Dealer.
Clamshell blades or limit stops worn
out.
Replace.