Troubleshooting - Greenlee 42247 Operation, Service And Parts Instruction Manual

Troubleshooting (cont'd)
PROBLEM
Tool control valve sticks or
works hard.
Tool operates continuously.
Tool operates backwards.
Tool operates, but chain does
not cut.
Power source operates, but
tool lacks power.
Greenlee Textron / Subsidiary of Textron Inc.
H6200B / 42247 Chain Saw
PROBABLE CAUSE
Check for dirt or gummy deposits.
Misalignment or binding of control
linkage.
Valve components worn or damaged.
Tool control valve stuck in partial
Power-ON position.
Hydraulic flow reversed to tool.
Hydraulic pressure and return lines
connected to opposite tool ports.
Tool components assembled
incorrectly.
Chain dull.
Automatic oiler not oiling guide bar
or chain.
Guide bar worn.
Chain tension adjusted too tight.
Valve components worn or
damaged, leaking fluid internally.
Motor components worn or damaged,
leaking fluid internally.
22
POSSIBLE REMEDY
Clean components.
Correct alignment. Lubricate linkage
joints. Replace damaged components.
Disassemble valve and replace worn
or damaged components.
Free spool so it returns to neutral
position.
Reverse flow to tool. Check for valve
in system that has reversed flow.
Check hoses for proper flow.
Disconnect hoses. Reverse couplers.
Reconnect hoses to proper tool ports.
Disassemble tool. Reassemble
correctly.
Remove chain and sharpen to chain
manufacturer's specifications or
install a sharp chain.
Check oiler setting. Clean oil ports
in guide bar. Adjust oiler setting if
necessary. See Automatic Chain
Oiler (page 14).
Check bar groove and rail wear.
See Guide Bar (page 16). If wear is
excessive, replace the guide bar.
Check chain tension and adjust if
necessary. See Saw Chain Tension
(page 15).
Disassemble tool valve. Replace
worn or damaged valve components.
Disassemble tool motor. Replace
worn or damaged motor components.
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