Dodge RAM 1500 1998 Owner's Manual page 1458

DR
ENGINE 5.9L DIESEL (Continued)
CONDITION
EXCESSIVE ENGINE
NOISES
POSSIBLE CAUSES
7. Loose or broken power
component.
8. Worn or unbalanced driveline
components.
1. Drive belt squeal, insufficient
tension or abnormally high loading.
2. Intake air or exhaust leaks.
3. Excessive valve lash.
4. Turbocharger noise.
5. Gear train noise.
6. Power function knock.
ENGINE 5.9L DIESEL
CORRECTION
7. Inspect the crankshaft and rods for
damage that causes an unbalance
condition. Repair/replace as required.
8. Check/repair driveline components.
1. Check the automatic tensioner and
inspect the drive belt. Make sure water
pump, tensioner pulley, fan hub, generator
and power steering pump turn freely.
2. Refer to Excessive Exhaust Smoke
(Refer to 9 - ENGINE - DIAGNOSIS AND
TESTING).
3. Adjust valves. Make sure the push rods
are not bent and rocker arms, adjusting
screws, crossheads, are not severely worn.
Replace bent or severely worn components.
4. Check turbocharger impeller and turbine
wheel for housing contact. Repair/replace
as required.
5. Visually inspect and measure gear
backlash. Replace gears as required.
6. Check/replace rod and main bearings.
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