MTD 243-638-000 - Manual (Page 18)

HYDRAULIC TROUBLE SHOOTING GUIDE
Problem Probable Cause(s) Corrective Action
Cylinder rod will not
move A Broken driveshaft
B Loose shaft coupf ng
C Gear sections dar laged
D Damaged relief vs ive
E Hydraulic lines bicoked
F Too iittle oil to pump
G Damaged directioi lal valve
H Blocked directions! 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 ir let vacuum
C Slow engine speet
D Damaged relief va ve
E Too little oil to purr p
F Air in oil
G Directional valve leaking internally
H Internally damagec 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
slowiy
A Small gear section damaged
B Pump check valve leaking
C Excessive pump in et vacuum
D Low relief valve setting
E Too little oil to pumD
F Air in oil
G Directional valve le aking internally
H Overloaded cylinder
I Internally damaged 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
I Return cylinder for authorized repair
Engine stalls during
splitting
A Low horsepower/w(!ak engine
B Overloaded cylinde
r
A Return engine for authorized repair
B Do not attempt to split wood against the grain
Engine will not turn
or stalls under low
load conditions
A Engine/pump misal gnment
B Frozen or seized pi imp
C Low horsepower/wiiak engine
D Hydraulic lines blocked
E Blocked directional 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 driveshaft
B Engine/pump misalignment
C Gear sections dami :ged
D Poorly positioned si laft seal
E Plugged oil breathe
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 service duaier oniy.
18