bloc
SILVER Star
2013 3UR-FE Landcruiser, just approaching 150k miles. I had a belt squeal on cold start at about 120k and installed a new OEM serp belt, which resolved the issue. At the time I checked the condition of the idler and tensioner pullies, as well as the fan support bearing (our fan doesn't run on the end of the water pump like most V8s.). Everything was quiet and very very smooth. I wasn't worried.
Lately though, occasional squeak at idle, usually when cold but not always. Getting close to 150k, I purchased new OEM tensioner, Idler, and fan support bracket/bearing planning to put them on with my 150k PM.
This is what I found:
There was no wobble at all, but absolutely zero resistance (not even the fluid resistance of grease), with a light scratching sound when spun. The phone mic exaggerates the sound.. it was pretty faint.
A note for install.. the #2 (I think) water bypass pipe down to the oil cooler is a pain. There is a small 10mm bolt holding it to the top of the oil cooler that is very tight against the AC compressor. You can get that bolt out without removing the compressor but it won't do you much good.. to get the lower bolt out of the fan support bracket the pipes have to move out pretty far and then the AC comp is in the way. So just do the job right and remove the 3 AC compressor bolts and one nut. The top rear bolt is accessible through the wheel well, the bottom two from the bottom of the truck with a 12mm wrench, and the top front nut is easy.
Sorry I didn't get pics of all of this.. I'm annoyed my timing cover is leaking enough oil that it will require R&R eventually to re-seal.
Idler was in great shape.. it is quite a large bearing considering the simple forces on it. Tensioner pretty good.. no noise or grit but the bearing had a very very small wobble. Just a matter of time.
Anyway, if you guys/gals are approaching 150k this should probably be on your list of things to consider.
I left my fan clutch.. seems to be working great. No silicon leaks, acts as it should on start and I'll consider a new one before 200k.
Let me know if you have any questions
Lately though, occasional squeak at idle, usually when cold but not always. Getting close to 150k, I purchased new OEM tensioner, Idler, and fan support bracket/bearing planning to put them on with my 150k PM.
This is what I found:
There was no wobble at all, but absolutely zero resistance (not even the fluid resistance of grease), with a light scratching sound when spun. The phone mic exaggerates the sound.. it was pretty faint.
A note for install.. the #2 (I think) water bypass pipe down to the oil cooler is a pain. There is a small 10mm bolt holding it to the top of the oil cooler that is very tight against the AC compressor. You can get that bolt out without removing the compressor but it won't do you much good.. to get the lower bolt out of the fan support bracket the pipes have to move out pretty far and then the AC comp is in the way. So just do the job right and remove the 3 AC compressor bolts and one nut. The top rear bolt is accessible through the wheel well, the bottom two from the bottom of the truck with a 12mm wrench, and the top front nut is easy.
Sorry I didn't get pics of all of this.. I'm annoyed my timing cover is leaking enough oil that it will require R&R eventually to re-seal.
Idler was in great shape.. it is quite a large bearing considering the simple forces on it. Tensioner pretty good.. no noise or grit but the bearing had a very very small wobble. Just a matter of time.
Anyway, if you guys/gals are approaching 150k this should probably be on your list of things to consider.
I left my fan clutch.. seems to be working great. No silicon leaks, acts as it should on start and I'll consider a new one before 200k.
Let me know if you have any questions