Great Plains DVN8552 Operator Manual - Manual (Page 29)

Great Plains Manufacturing, Inc. Table of Contents Index Troubleshooting 25
2014-02-12 550-353M
Transport
Problem Cause Solution
Wings Fail
to Unfold Hydraulic hose disconnected.
Failed hydraulic hose tip.
Transport locks engaged.
Connect hydraulic hose.
Replace tip.
Disengage transport locks.
Wings Fail
To Fold Hydraulic hose disconnected.
Failed hydraulic hose tip.
Low hydraulic pressure.
Connect hydraulic hose.
Replace tip.
Increase pressure to be>1500psi (10.3x10^6 Pa).
Folds/
Unfolds Too
Slow Failed hydraulic hose tip. Replace tip.
Folds/
Unfolds Too
Fast Cylinder orifice removed. Replace orifice in cylinder ports.
Lift Circuit
immobilized Rebound valve locked. See dealer.
Lift Will Not
Go Down Transport locks engaged.
Depth stop engaging.
Failed poppet valve in depth stop.
Depth stop failing due to hose routing.
Disengage transport locks.
Readjust depth stop.
Replace poppet valve in depth stop.
Check routing with hydraulic layout, “Pre-Delivery
Manual”.
Machine
Bouncing
During
Transport Excessive speed. Slow down (18 m/h)/(30 km/h).