4WHi on Highway - Major mechanical breakdown
#31
#32
Join Date: Jan 2010
Location: San Pedro, California
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From the OP per the dealer;
Story: Front diff pinion bearing seized, pinion then twisted off. Then the front drive shaft hit the engine mount bracket and tweaked and split the transmission case. The drive shaft also hit the engine oil pan and made 2 dents on the side of it. The pinion got jammed in the ring gear and cause the front differential case to split. The front differential got so hot from the seized pinion bearing that the fill plug and the wiring harness closest to the front diff melted.
I don't see how the pinion bearing would get so hot if the transfer case failed or if the pinion gear just snapped. Sure sounds like the root cause is a seized bearing and I don't see that being caused by being in 4WD at high speeds.
Story: Front diff pinion bearing seized, pinion then twisted off. Then the front drive shaft hit the engine mount bracket and tweaked and split the transmission case. The drive shaft also hit the engine oil pan and made 2 dents on the side of it. The pinion got jammed in the ring gear and cause the front differential case to split. The front differential got so hot from the seized pinion bearing that the fill plug and the wiring harness closest to the front diff melted.
I don't see how the pinion bearing would get so hot if the transfer case failed or if the pinion gear just snapped. Sure sounds like the root cause is a seized bearing and I don't see that being caused by being in 4WD at high speeds.
#34
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From the OP per the dealer;
Story: Front diff pinion bearing seized, pinion then twisted off. Then the front drive shaft hit the engine mount bracket and tweaked and split the transmission case. The drive shaft also hit the engine oil pan and made 2 dents on the side of it. The pinion got jammed in the ring gear and cause the front differential case to split. The front differential got so hot from the seized pinion bearing that the fill plug and the wiring harness closest to the front diff melted.
I don't see how the pinion bearing would get so hot if the transfer case failed or if the pinion gear just snapped. Sure sounds like the root cause is a seized bearing and I don't see that being caused by being in 4WD at high speeds.
Story: Front diff pinion bearing seized, pinion then twisted off. Then the front drive shaft hit the engine mount bracket and tweaked and split the transmission case. The drive shaft also hit the engine oil pan and made 2 dents on the side of it. The pinion got jammed in the ring gear and cause the front differential case to split. The front differential got so hot from the seized pinion bearing that the fill plug and the wiring harness closest to the front diff melted.
I don't see how the pinion bearing would get so hot if the transfer case failed or if the pinion gear just snapped. Sure sounds like the root cause is a seized bearing and I don't see that being caused by being in 4WD at high speeds.
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#35
#36
#38
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Really? Isn't the bearing pressed on the shaft, so if the bearing freezes, now your forcing the 2 parts that are pressed together to rotate. I could see how that would get scorching hot very quick. Those rubber plugs are soft and pliable. Unless the wiring was touching the case, I dont see how that would melt though.
#39
#40
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Really? Isn't the bearing pressed on the shaft, so if the bearing freezes, now your forcing the 2 parts that are pressed together to rotate. I could see how that would get scorching hot very quick. Those rubber plugs are soft and pliable. Unless the wiring was touching the case, I dont see how that would melt though.