| Symptom | Problem | Solution |
|
Engine Overheats
| Lack of coolant in cooling system |
Fill cooling system
to proper level.
|
| |
Radiator core dirty
|
Clean radiator as required.
|
| |
Engine overloaded
|
Reduce engine load.
|
| |
Too low crankcase oil level
|
Fill crankcase to proper
oil level.
|
| |
Loose or defective fan belt
|
Replace fan belt as
required. Check belt tensioner. (See Section.)
|
| |
Defective thermostat(s)
|
Test thermostat opening
temperature; replace thermostats as required.
|
| |
Damaged cylinder head gasket
|
Replace cylinder head
gasket. See your John Deere engine distributor or servicing dealer.
|
| |
Defective coolant pump
|
Replace coolant pump.
See your John Deere engine distributor or servicing dealer.
|
| |
Defective radiator cap
|
Replace radiator cap
as required.
|
|
Coolant in Crankcase
| Cylinder head gasket defective |
Replace cylinder head
gasket. See your John Deere engine distributor or servicing dealer.
|
| |
Cylinder head or block cracked
|
Locate crack, repair/replace
components as required.
|
| |
Cylinder liner seals leaking
|
Remove and inspect cylinder
liners. See your John Deere engine distributor or servicing dealer.
|
| |
Leaking oil cooler
|
Pressure test oil cooler;
repair/replace as required. See your John Deere engine distributor
or servicing dealer.
|
| |
Defective oil cooler O-rings
|
Remove and inspect oil
cooler O-rings; replace as required. See your John Deere engine distributor
or servicing dealer.
|
| |
Faulty coolant pump seal; weep hole plugged; coolant
leaking through bearing
|
Replace coolant pump
seals. See your John Deere engine distributor or servicing dealer.
|