New Holland BNAC658HB, Operation Manual

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16
troubleshooting
Trouble Possible Cause Corrective Action
No start condition Gas engine not running Check operation of gas engine
Low pressure Air leak in safety valve Check valve manually by
pulling upward on rings. If
condition persists, replace
valve.
Loose tube or fittings Tighten fittings
Restricted air filter Clean or replace
Belt loose Adjust belt tension
Defective check valve Replace check valve
Safety valve releasing Defective pressure switch
or improper adjustment
Check for proper
adjustment and if problem
persists, replace pressure
switch
Oil discharge in air Improper oil viscosity Replace oil with 20-30
weight non-detergent oil
Too much oil in crankcase Drain crankcase and fill to
proper level
Restricted air filter Clean or replace filter
Worn piston rings Replace piston rings
Excessive belt wear Belt too loose Adjust for proper tension
Belt too tight Adjust for proper tension
Motor pulley out of alignment Align motor pulley by
adjusting the position of the
electric motor
During the break-in period, nuts and bolts have a tendency to loosen.
After two weeks, tighten all nuts and bolts including head bolts. Check
every month to make sure all nuts and bolts stay tight.
Troubleshooting Chart
parts