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Section 7: Troubleshooting
6/28/11
Model SAC35 Hydraulic Post Hole Digger 317-188M
Section 7: Troubleshooting
Troubleshooting Chart
Problem
Cause
Solution
Auger will not dig
Teeth are dull.
Sharpen or replace teeth.
Auger is turning too fast and bouncing.
Reduce engine speed.
Do not exceed 90 RPM auger speed.
Auger is encountering rocks, roots, or other
obstructions.
Lift auger from hole and remove obstruction or
change location.
Skid Steer
/Tractor
is not positioned properly.
Reposition Skid Steer
/Tractor
.
Auger digs so far, but
will not dig deeper
Soil could have hardpan layer below surface.
Use Skid Steer to push auger into ground. May
Need to use an extension.
Auger is bent and/or
auger flighting is bent
Skid Steer
/Tractor
moved on its own while auger
was in the hole.
Replace auger. Always make sure selector is in
neutral or park and tractor brakes are set.
Operator moved Skid Steer
/Tractor
with auger in
hole to try to straighten hole being dug at an angle.
Replace auger. Do not move
Tractor/Skid Steer
while auger is in hole.
Auger is encountering rock, roots or other foreign
objects.
Replace auger. Remove object from hole or
change location.
Excessive oil heating
Flow in hydraulic line is restricted due to dirt
particles in fittings and twisted hydraulic hoses.
Consult Skid Steer/Tractor Operator’s Manual.
Remove dirt particles in fittings and untwist
hydraulic hoses that maybe pinched or kinked.
Defective or mismatched coupler.
Replace with proper couplers.
Hydraulic fluid is dirty.
Consult Skid Steer/Tractor Operator’s Manual.
Replace hydraulic fluid and filter.
Insufficient quantity of hydraulic fluid.
Consult Skid Steer/Tractor Operator’s Manual.
Fill reservoir to proper level.
Digging load is excessive.
Reduce load to within machine specifications.
Jerky operation
Cold oil or air in hydraulic lines.
Allow time for the hydraulic oil to warm up.
Hydraulic system not working properly.
See Skid Steer
/Tractor
Operator’s Manual.
Insufficient
digging power
Excessive wear of auger teeth or point.
Replace auger teeth or point.
Low system pressure. (PSI)
Check system with pressure gauge.
If low, investigate cause.
Relief valve is damaged or is set wrong.
Refer to Skid Steer or Tractor Operator’s Manual.
Excessive digging load.
Reduce load to within machine specifications.
Hydraulic Oil leaks
Loose or damaged hoses.
Tighten or replace hydraulic hoses.
Loose or damaged fittings.
Tighten or replace hydraulic fittings.
Hydraulic motor seals and gaskets are worn or
damaged.
See Dealer for repair.
Auger turns in
reverse direction
Hydraulic hoses are reversed.
Re-install hoses correctly.
Auger speed is slow
Low hydraulic flow through the system.
Check with flow meter. If low, investigate and
correct.
Flow in hydraulic line is restricted due to dirt
particles in fittings and twisted hydraulic hoses.
Remove dirt particles in fittings and untwist
hydraulic hoses that maybe pinched or kinked.
Defective or mismatched couplers.
Replace with proper couplers.
Fittings and/or connections are too small.
Replace with proper size fittings and/or
connections.
Dirty oil filter.
Replace oil filter.
Worn or damaged hydraulic pump.
See dealer for repair
Excessive wear of auger teeth or point.
Replace auger teeth and/or point.
