Differential. Differential System Problem Symptoms Table

Drive Line. Lexus Gs430, Gs300. Uzs190 Grs190

Differential. Lexus Gs430, Gs300. Uzs190 Grs190

Differential System -- Problem Symptoms Table

Use the table below to help find the cause of the problem. The causes of the problem are listed in order of probability in the "Suspected area" column. Check each part in order. If necessary, replace these parts.

for 3GR-FSE
Symptom	Suspected area	See page
Noise in rear differential	Oil level (Low or wrong grade)	Click here
	Ring gear or drive pinion (Worn or chipped)	Click here
	Backlash adjustment (Defective)	Click here
	Preload adjustment (Defective)	Click here
	Tooth contact between ring gear and drive pinion (Defective)	Click here
	Bearing (Worn)	Click here
Oil leak from rear differential	Oil level (Too high or wrong grade)	Click here
	Side gear shaft oil seal (Worn or damaged)	Click here
	Seal packing (Damaged)	Click here

for 3GR-FE
Symptom	Suspected area	See page
Noise in rear differential	Oil level (Low or wrong grade)	Click here
	Ring gear or drive pinion (Worn or chipped)	Click here
	Backlash adjustment (Defective)	Click here
	Preload adjustment (Defective)	Click here
	Tooth contact between ring gear and drive pinion (Defective)	Click here
	Bearing (Worn)	Click here
Oil leak from rear differential	Oil level (Too high or wrong grade)	Click here
	Side gear shaft oil seal (Worn or damaged)	Click here
	Seal packing (Damaged)	Click here

for 3UZ-FE
Symptom	Suspected area	See page
Noise in rear differential	Oil level (Low or wrong grade)	Click here
	Ring gear or drive pinion (Worn or chipped)	Click here
	Backlash adjustment (Defective)	Click here
	Preload adjustment (Defective)	Click here
	Tooth contact between ring gear and drive pinion (Defective)	Click here
	Bearing (Worn)	Click here
Oil leak from rear differential	Oil level (Too high or wrong grade)	Click here
	Side gear shaft oil seal (Worn or damaged)	Click here
	Seal packing (Damaged)	Click here