7
C.
Maintenance
Daily Maintenance:
Check and tighten all nuts, bolts and connection parts.
Check the oil in the gearbox. Fill it up to dedicated line if necessary.
Press grease in each nipple three to five times.
Clean the mower; remove all grass, mud and debris.
Seasonal Maintenance:
Check the machine as for Daily Maintenance.
Check the oil in the Gearbox; replace if it is bad.
Check the bearings and oil seals of blade spindles to make sure mud and water have not been
entering. Disassemble, clean and replace them if necessary. Press grease into them.
Check the distance between bearings and gears. Adjust if necessary.
Annual Maintenance:
Clean mud, grass and debris from the machine thoroughly.
Let the oil in the Gearbox drain out thoroughly. Check and clean it. Fill with new Gearbox oil up to
the dedicated oil level.
Check all clearance between bearings and gears if you have replaced them. Please run it without
load for 3-5 minutes.
Check and clean blade axles. Replace oil seals if required and press grease into them.
Check all blades, replace them if they are worn or damaged.
Repair the side skirts if necessary. Replace damaged or broken protective devices.
Remove the drive shaft from the mower. Check and replace any components that are damaged or
worn. Reattach the drive shaft to the mower
–
it should telescope easily, and the guard should turn
freely on the shaft. Grease if necessary.
Drive belt Tension adjustment.
•
With the tractor switched off, and the park brake engaged, remover the two covers. Loosen the 4
gear box mounting bolts, adjust the rear nut to side the gearbox mount forward or back as required.
5.
Trouble Shooting
In this section we have listed many of the problems, causes and solutions to the problems that you may
encounter.
Problem
Cause
Solution
Finishing Mower doesn’t
turn
Tractor clutch slips
Tighten or replace slip clutch
PTO shaft slips
Repair tractor PTO clutch
Wheel Failure
Traveling too Fast
Slowdown
Poor cutting job
Travelling too fast
Slow down
Blades dull
Sharpen blades
Grooves in grass
Bent blades
Straighten or replace blades
Scalping
Mower too low
Raise the mower
Grass being left
Travelling too fast
Slow down
Top link too short
Extend top link
Noisy gearbox
Poor gear mesh
Remove input shaft and gear.
Replace worn parts.
Reassemble and use shims to give a gear backlash of 0.006-
0.018 inches measured at 2 13/16” from shaft
centreline.
Clutch slips
Overload
Slow down
Clutch loose
Tighten springs on clutch plates
Clutch worn out
Replace clutch components or assembly as required.
Vibration
Out of balance
Check for bent, damaged or broken blades. Repair or replace
as required.
Summary of Contents for DK120
Page 9: ......
