RAM 1500 Truck 4WD V8-5.9L VIN Z (2002)
Fluid - A/T: Testing and Inspection
Fluid Contamination
DIAGNOSIS AND TESTING - FLUID CONTAMINATION
Transmission fluid contamination is generally a result of:
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adding incorrect fluid
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failure to clean dipstick and fill tube when checking level
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engine coolant entering the fluid
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internal failure that generates debris
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overheat that generates sludge (fluid breakdown)
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failure to reverse flush cooler and lines after repair
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failure to replace contaminated converter after repair
The use of non-recommended fluids can result in transmission failure. The usual results are erratic shifts, slippage, abnormal wear and eventual failure
due to fluid breakdown and sludge formation. Avoid this condition by using recommended fluids only.
The dipstick cap and fill tube should be wiped clean before checking fluid level. Dirt, grease and other foreign material on the cap and tube could fall
into the tube if not removed beforehand. Take the time to wipe the cap and tube clean before withdrawing the dipstick.
Engine coolant in the transmission fluid is generally caused by a cooler malfunction. The only remedy is to replace the radiator as the cooler in the
radiator is not a serviceable part. If coolant has circulated through the transmission, an overhaul is necessary.
The transmission cooler and lines should be reverse flushed whenever a malfunction generates sludge and/or debris. The torque converter should also be
replaced at the same time.
Failure to flush the cooler and lines will result in recontamination. Flushing applies to auxiliary coolers as well. The torque converter should also be
replaced whenever a failure generates sludge and debris. This is necessary because normal converter flushing procedures will not remove all
contaminants.
