MTD 242-630-000 - Manual (Page 16)

HYDRAULIC TFtOUBLE SHOOTING GUIDE
Problem Probable Cause(s) Corrective Action
Cylinder rod will not
move A Broken driveshaf
B Loose shaft coup ling
C Gear sections da maged
D Damaged relief v alve
E Hydraulic lines bbcked
F Too little oil to pump
G Damaged directional valve
H Blocked directional valve
A Return pump for authorized repair
B Correct engine/pump alignment as necessary
C Return pump for authorized repair
D Return directional valve for authorized repair
E Flush and clean hydraulic system
F Add oil to reservoir
G Return directional valve for authorized repair
H Flush and clean hydraulic system; return
directional valve for authorized repair
Slow cylinder shaft
speed while
extending and
retracting A Gear sections damaged
B Excessive pump inlet vacuum
C Slow engine spei id
D Damaged relief v alve
E Too little oil to pump
F Air in oil
G Directional valve leaking internally
H Internally damag 3d cylinder
A Return pump for authorized repair
B Make certain pump inlet hoses are clear
and unblocked—use short, large
diameter inlet hoses
C Return engine for authorized repair
D Return directional valve for authorized repair
E Add oil to reservoir
F Add oil, clean reservoir, make certain oil
return tube is below oil level
G Return directional valve for authorized repair
H Return cylinder for authorized repair
Engine runs but
wood will not split,
or wood splits too
slowly
A Small gear sectic n damaged
B Pump check valv e leaking
C Excessive pump inlet vacuum
D Low relief valve i etting
E Too little oil to pimp
F Air in oil
G Directional valve leaking internally
H Overloaded cylin der
1 Internally damag ad cylinder
A Return pump for authorized repair
B Return pump for authorized repair
C Make certain pump inlet hoses are
clear and unblocked; use short, large
diameter inlet hoses
D Adjust valve while using pressure gauge*
E Add oil to reservoir
F Add oil, clean reservoir, make certain oil
return tube is below oil level
G Return directional valve for authorized repair
H Do not attempt to split wood against the grain
1 Return cylinder for authorized repair
Engine stalls during
splitting
A Low horsepower'weak engine
B High relief valve setting
C High unloading valve setting
D Overloaded cylir der
A Return engine for authorized repair
B Adjust valve while using pressure gauge*
C Adjust valve while using pressure gauge*
D Do not attempt to split wood against the grain
Engine will not turn
or stalls under low
load conditions A Engine/pump mi salignment
B Frozen or seizec pump
C Low horsepower 'weak engine
D Hydraulic lines fc locked
E Blocked directioi lal valve
A Correct alignment as necessary
B Return pump for authorized repair
C Return engine for authorized repair
D Flush and clean hydraulic system
E Flush and clean hydraulic system; return
directional valve for authorized repair
Leaking pump shaft
seal
A Broken driveshart
B Engine/pump misalignment
C Gear sections di imaged
D Poorly positione i shaft seal
E Plugged oil breather
A Return pump for authorized repair
B Correct alignment as necessary
C Return pump for authorized repair
D Return pump for authorized repair
E Make certain reservoir is properly vented
"Should be performed by an authorized servic s dealer only.
FOR REPLACEMENT PARTS, CONTACT:
SERVICE DEPARTMENT • P.O. BOX 360900 • CLEVELAND, OHIO 44136