Landoll 7450 VT Plus - Manual (Page 78)

5-2 F-607-0114 Edition
TROUBLESHOOTING GUIDE
WHEEL BEARING FAILURE Seals not installed correctly Install seals with the lips pointing outward
away from the hub.
HYDRAULIC - LIFT CYLINDERS NOT
FULLY EXTENDING Lift cylinders not in phase Fully extend cylinders and hold hydraulic
lever until all cylinders are fully
extended.
Cylinders not installed in proper series Wing cylinders are smaller diameter than
center cylinders. Reinstall cylinders
properly.
Hoses not properly connected: Check hose routing
HYDRAULIC - ONE SIDE OF CENTER
LIFT CYLINDERS NOT FULLY
EXTENDING Center lifts not properly timed. 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.
HYDRAULIC - CANNOT INSTALL ONE
TRANSPORT LOCK Center lifts not properly timed. 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.
HYDRAULIC - ENTIRE UNIT SETTLING Depth stop valve not working Repair valve
HYDRAULIC - UNIT SETTLING, ONE
WING RAISING Center frame cylinder leaking internally on
side of unit that wing is raising Repair center master cylinder
HYDRAULIC - WING SETTLING Wing cylinder leaking: Repair cylinder
DISC GANG PLUGGING Scrapers set too far from disc blade Adjust scrapers to meet disc blade closer
and evenly
Operating depth too deep Raise unit.
Conditions too wet Wait until conditions more favorable.
In drier conditions, set scraper farther away from disc blade to improve residue flow
DISC GANG WILL NOT TURN OR
PUSHES SOIL Scrapers set too tight Readjust scrapers.
Depth set too deep for loose or wet
conditions Raise implement or wait until conditions
are more favorable.
Gang bearing failure Replace bearing
DISC GANG BEARING SNAP RING
POPS OUT Gang bearings installed incorrectly Install bearings with snap ring away from
concave side of disc blade.
SCRAPERS BUILD UP WITH
EXCESSIVE SOIL/RESIDUE Scrapers set too far from disc blade Readjust scrapers.
DISC BLADES LOOSE AND/OR
SHEARING ROLL PIN Gang not tightened properly 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.
CONDITIONER REELS PLUGGING Excessive down pressure Raise reels w/ adjustment bolt
PROBLEM PROBABLE CAUSE SOLUTION