Troubleshooting

Problem

 

Possible Causes

 

Corrective Action

 

 

 

 

 

Engine looses power.

Engine load is excessive.

Reduce ground speed.

 

 

 

• Reduce speed of trencher.

 

 

 

 

 

 

Air cleaner is dirty.

Clean air filter housing and

 

 

 

 

replace the filter elements.

 

 

 

 

 

 

Engine oil level in crankcase is

Add the appropriate engine

 

 

low.

 

oil to crankcase. See engine

 

 

 

 

manual for oil specifications.

 

 

 

 

 

 

Cooling fins and air passages

Remove obstruction from

 

 

under engine blower housing

 

cooling fins and air passages.

 

 

are plugged.

 

 

 

 

 

 

 

 

Dirty or contaminated fuel filter.

Replace fuel filter.

 

 

 

 

 

 

Dirt, water, or stale fuel is in fuel

Drain fuel in tank into an

 

 

system.

 

appropriate storage container

 

 

 

 

and dispose of bad fuel

 

 

 

 

properly.

 

 

 

• Refill fuel tank with fresh,

 

 

 

 

clean fuel.

 

 

 

Replace fuel filter.

 

 

 

 

 

Engine overheats.

Engine load is excessive.

Reduce ground speed.

 

 

 

• Reduce speed of trencher.

 

 

 

• Engine oil level in crankcase

 

 

 

 

is low.

 

 

 

• Add the appropriate engine

 

 

 

 

oil to crankcase. See engine

 

 

 

 

manual for oil specifications.

 

 

 

 

 

 

Cooling fins and air passages

Remove obstruction from

 

 

under engine blower housing

 

cooling fins and air passages.

 

 

are plugged.

 

 

 

 

 

 

 

Abnormal engine vibration.

Engine mounting bolts are loose.

Tighten engine mounting bolts.

 

 

 

 

 

With the engine turned

Valve spool leakage.

Contact Service Dealer.

off, the boom creeps

 

 

 

 

Cylinder seals are leaking.

Replace cylinder seals.

downward (less than 3"

 

 

 

 

per hour is normal for this

 

 

 

 

machine).

 

 

 

 

 

 

 

 

 

With the engine turned

Cylinder seals are leaking.

Replace cylinder seals.

off, boom drops

 

 

 

 

downward quickly and

 

 

 

 

then stops.

 

 

 

 

 

 

 

 

 

5-2

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Cellboost 999-823 manual Troubleshooting

999-823 specifications

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