MTD 550 Thru 570 Operator's Manual page 17

Problem
Slow cylinder shaft
speed while extending
and retracting.
Leaking Cylinder
Engine runs but wood
will not split or wood
splits too slowly
Engine stalls during
splitting
Engine will not turn or
stalls under low load
conditions
Leaking pump shaft
seal
Cause
1. Gear sections damaged.
2. Excessive pump inlet vacuum.
3. Slow engine speed.
4. Damaged relief valve.
5. Incorrect oil level.
6. Contaminated oil.
7. Directional valve leaking internally.
8. Internally damaged cylinder.
1. Broken seals.
2. Scored cylinder.
1. Small gear section damaged.
2. Pump check valve leaking.
3. Excessive pump inlet vacuum.
4. Incorrect oil level.
5. Contaminated oil.
6. Directional valve leaking internally.
7. Overloaded cylinder.
8. Internally damaged cylinder.
1. Low horsepower/weak engine.
2. Overloaded cylinder.
1. Engine/pump misalignment.
2. Frozen or seized pump.
3. Low horsepower/weak engine.
4. Hydraulic lines blocked.
5. Blocked directional valve.
1. Broken drive shaft.
2. Engine/pump misalignment.
3. Gear sections damaged.
4. Poorly positioned shaft seal.
5. Plugged oil breather.
17
Remedy
1.See authorized service dealer.
2. Make certain pump inlet hoses are
clear and unblocked-use short,
large diameter inlet hoses.
3.See authorized service dealer.
4.See authorized service dealer.
5.Check oil level.
6.Drain oil, clean reservoir, and refill.
7.See authorized service dealer.
8.See authorized service dealer.
1. See authorized service dealer.
2. See authorized service dealer.
1. See authorized service dealer.
2. See authorized service dealer.
3. Make certain pump inlet hoses are
clear and unblocked.
4. Check oil level.
5. Drain oil, clean reservoir, and refill.
6. See authorized service dealer.
7. Do not attempt to split wood
against the grain.
8. See authorized service dealer.
1. See authorized service dealer.
2. Do not attempt to split wood
against the grain or see authorized
service dealer.
1. Correct alignment as necessary.
2. See authorized service dealer.
3. See authorized service dealer.
4. Flush and clean hydraulic system.
5. Flush and clean hydraulic system.
1. See authorized service dealer.
2. Correct alignment as necessary.
3. See authorized service dealer.
4. See authorized service dealer.
5. Make certain reservoir is properly
vented.
6
Hydraulic
Trouble
Shooting
For repairs beyond
the minor adjust-
ments listed here,
contact an authorized
service dealer.