Landoll VT Plus 7431 Operator's Manual page 102

TROUBLESHOOTING GUIDE
PROBLEM
WHEEL BEARING FAILURE
HYDRAULIC - LIFT CYLINDERS NOT
FULLY EXTENDING
HYDRAULIC - ONE SIDE OF CENTER
LIFT CYLINDERS NOT FULLY
EXTENDING
HYDRAULIC - CANNOT INSTALL ONE
TRANSPORT LOCK
HYDRAULIC - ENTIRE UNIT SETTLING
HYDRAULIC - UNIT SETTLING, ONE
WING RAISING
HYDRAULIC - WING SETTLING
DISC GANG PLUGGING
DISC GANG WILL NOT TURN OR
PUSHES SOIL
DISC GANG BEARING SNAP RING
POPS OUT
SCRAPERS BUILD UP WITH
EXCESSIVE SOIL/RESIDUE
DISC BLADES LOOSE AND/OR
SHEARING ROLL PIN
CONDITIONER REELS PLUGGING
LIGHTS DO NOT WORK
5-2
PROBABLE CAUSE
Seals not installed correctly
Lift cylinders not in phase
Cylinders not installed in proper series
Hoses not properly connected:
Center lifts not properly timed.
Center lifts not properly timed.
Depth stop valve not working
Center frame cylinder leaking internally on
side of unit that wing is raising
Wing cylinder leaking:
Scrapers set too far from disc blade
Operating depth too deep
Conditions too wet
In drier conditions, set scraper farther away from disc blade to improve residue flow
Scrapers set too tight
Depth set too deep for loose or wet
conditions
Gang bearing failure
Gang bearings installed incorrectly
Scrapers set too far from disc blade
Gang not tightened properly
Excessive down pressure
Harness or lamp connection unplugged
SOLUTION
Install seals with the lips pointing outward
away from the hub.
Fully extend cylinders and hold hydraulic
lever until all cylinders are fully
extended.
Wing cylinders are smaller diameter than
center cylinders. Reinstall cylinders
properly.
Check hose routing
Remove 1" bolt from adjustable radius rod
on lifts and fully retract lift cylinders,
reinstall radius rod bolt adjusting it to fit
the lifts in the position. Check center
frame level as described in "Leveling
(Side to Side)" on page 4-8.
Remove 1" bolt from adjustable radius rod
on lifts and fully retract lift cylinders,
reinstall radius rod bolt adjusting it to fit
the lifts in the position. Check center
frame level as described in "Leveling
(Side to Side)" on page 4-8.
Repair valve
Repair center master cylinder
Repair cylinder
Adjust scrapers to meet disc blade closer
and evenly
Raise unit.
Wait until conditions more favorable.
Readjust scrapers.
Raise implement or wait until conditions
are more favorable.
Replace bearing
Install bearings with snap ring away from
concave side of disc blade.
Readjust scrapers.
Retighten gang shafts to 1250-1500 ft-lbs.
If gangs have ran loose, gangs may
require disassembly to remove soil to
properly torque gang shafts. Replace
any worn components, shafts/spools,
etc.
Raise reels w/ adjustment bolt
Check all harness/lamp connections to
verify that everything is properly
connected.
F-561-0818