MacDon A40-D, Operator'S Manual

Page: 219 / 240

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Revision A
Symptom Problem Solution Section
Header turns while
unloaded but slows or
stops when starting to cut
Low reservoir oil level Add oil to reservoir.
4.6.1 Servicing
Header Hydraulics,
page 116
Header turns while
unloaded but slows or
stops when starting to cut
Cold oil in system
Reduce ground speed until oil
reaches operating temperature.
3.10 Selecting
Ground Speed,
page 93
Header turns while
unloaded but slows or
stops when starting to cut
Defective motor Repair motor. See Dealer
Header turns while
unloaded but slows or
stops when starting to cut
Defective O-ring inside
relief valve
Replace relief valve. See Dealer
Header turns while
unloaded but slows or
stops when starting to cut
Defective pump Repair pump. See Dealer
Header turns while
unloaded but slows or
stops when starting to cut
Defective relief valve Repair relief valve. See Dealer
Knocking in knife drive
Worn needle bearing in
knifehead
Replace
4.7.4 Removing
Knifehead Bearing,
page 119
Knocking in knife drive Worn knifehead pin Replace
4.7.3 Installing
Knife, page 118
Knocking in knife drive
Incorrect end guards
Replace with special end
guards. 4.7.7 Guards, page
121
Knife back breakage Dull knife Replace
4.7.4 Removing
Knifehead Bearing,
page 119
Knife back breakage Worn knife head pin Replace
4.7.3 Installing
Knife, page 118
Knife back breakage
Bent or broken guard
Straighten or replace
4.7.7 Guards, page
121
Knife back breakage
Incorrect end guards at
knifehead Replace with correct number of
special guards. 4.7.7 Guards, page
121
Windrower side drift
Header is dragging on one
end and pulling to
that side.
Adjust skid shoes to prevent
cutterbar dragging.
3.6.8 Setting
Cutting Height,
page 71
Windrower side drift
Header is dragging on one
end and pulling to
that side.
Adjust header float.
3.6.9 Checking/
Adjusting Float
–
M
Series, page 72
Lights malfunctioning Improper ground
Check for proper grounding
between light base and header.
4.16 Maintaining
the Electrical
System, page 191
TROUBLESHOOTING