20
Owner’s Manual for Flameless Air Heater
Troubleshooting
Problem
Cause
Solution
Abnormal Engine Noise
Worn main or connecting rod bearings
Contact an IASD
Excessive crankshaft end play
Loose main bearing caps
Worn connecting rod bushings and piston
pins
Scored pistons
Worn timing gears or excess backlash
Excessive valve clearance
Worn camshaft lobes
Worn rocker arm shaft(s)
Worn valve guides
Damaged valve retainers
Loose or worn rocker arms
Bent pushrods
Broken valve springs
Bent connecting rods
Worn flywheel
Loose flywheel
Excessive piston to liner clearance
Excessive thrust bearing clearance
High oil viscosity
Turbocharger “Screams”
Leak in intake air system
Turbocharger Noise or Vibra-
tion
Bearings not lubricated (insufficient oil
pressure)
Determine cause of lack of lubrica-
tion; repair as required or contact
Contact an IASD
Air leak in engine intake or exhaust mani-
fold
Check intake and exhaust manifold
gaskets and manifolds; repair as
required or contact an IASD
Improper clearance between turbine wheel
and turbine housing
Inspect turbocharger; repair/
replace as required or contact an
IASD
Broken blades (or other wheel failures)
Inspect turbocharger; repair/
replace as required or contact an
IASD
