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AM
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800-248-8498
800-248-8498
WWW.AMERICANPILEDRIVING.COM
WWW.AMERICANPILEDRIVING.COM
MODEL 300-4 VIBRO
Copyright © 2020 American Piledriving Equipment Inc. All Rights Reserved
MAINTENANCE & TROUBLESHOOTING
MAINTENANCE & TROUBLESHOOTING
Troubleshooting Chart
Symptom
Possible Cause
Solution
Oil blowing out
between gearbox
and hydraulic
motor
1. Blocked case drain.
2. Breather plugged or
damaged.
3. O-rings not sealing properly.
1. Ensure case drain hose is attached and not kinked.
2. Remove and clean breather, replacing if damaged.
3. Verify o-ring seal and cleanliness between gearbox
and motor.
Vibro gearbox
overheating at the
bearing covers
1. Vibro is being run too hard.
2.
There is too much or too
little oil in gearbox.
3. Gearbox oil is damaged.
1. Check that the unit is penetrating at least 1 inch
of soil for every 30 seconds of operation. Allow
the vibro to cool down between sessions of hard
operation.
2. Set the gearbox upright and level and check the
sight glass. If the oil level is too high remove the
sight glass and allow some to drain. If it is too low
replace missing oil.
3. Check oil quality in sight gauge and drainage plug.
For oil that is black, milky, or contains large metal
flakes see the next symptom on this chart.
The gearbox
oil is discolored
or contains
contaminants
1.
Gearbox oil has a dark or
milky appearance from
water, hydraulic oil, or dirt.
2. Damaged bearings or
eccentrics are leaving metal
flakes or brass chunks.
1.
Check all seals, especially those near the hydraulic
motor, hoses, and the gearbox exterior for damage,
breaches, or faulty o-rings.
2. Perform the check bearings and eccentrics
procedure. If damage is found replace the
components and gearbox oil.
Gearbox is filling
with oil
Hydraulic oil is entering
the gearbox through a bad
motor seal.
Remove the hydraulic motor and check for damage
to the o-ring or gearbox.
Opening and
closing clamp
jaws seems
spongy or slow
1.
The clamp cylinders are
dirty or inadequately
lubricated.
2. Clamp hoses contain air.
1. Inspect and lubricate clamps, clearing dirt as
needed.
2. Follow the Bleeding the Clamps procedure as
described earlier in this manual.
Vibro won’t come
up to normal
operating speed
1. Power unit at low RPM.
2. Hoses are damaged or
kinked.
3. Defective or damaged
hydraulic motor.
4.
Power unit pumps need
repaired.
1. Raise the Power unit engine RPM.
2. Check all hose connections and fix any loose or
kinked lines.
3. Perform the Checking Hydraulic Motors procedure.
Replace a motor that shows damage.
4. Contact a Qualified Service Technician to service
or replace the power unit pump.