Timing Belt - Questions, Concerns, Comments
05-25-12, 10:06 AM
#16
My neighbor has a '03 LX470 (same engine) and he replaced his TB at 150K. It was beginning to show a little fatigue but no indication at all that it was nearing failure.
Also, I know the parts manager at a highly regarded Toyota dealer in the Chicago area and he says he's never seen an indication that they need to be replaced prior to 125K.
Also, I know the parts manager at a highly regarded Toyota dealer in the Chicago area and he says he's never seen an indication that they need to be replaced prior to 125K.
05-25-12, 12:16 PM
#18
Pole Position
Toyota 4.7L V8 is an INTERFERENCE engine. What that means is that if you timing belt breaks when engine is running, the valves and pistons will occupy the same space at the same time, leading to a VERY expensive repair.
So I can summarize my advice in a few words: you can pay a little now, or a lot later. The choice is yours...
So I can summarize my advice in a few words: you can pay a little now, or a lot later. The choice is yours...
05-25-12, 12:20 PM
#19
Pole Position
05-25-12, 03:33 PM
#21
Lead Lap
No one has mentioned this specifically, but if you are having your timing belt replaced, be sure to have the water pump replaced at the same time. You will have to pay for the part, but not the labor, as they have to remove the water pump in order to replace the timing belt.
It's likely a Toyota or Lexus dealer will recommend this, and the reason it's a good idea is that Toyota water pumps are NOT known for their longivity.
It's likely a Toyota or Lexus dealer will recommend this, and the reason it's a good idea is that Toyota water pumps are NOT known for their longivity.
01-14-13, 10:55 AM
#23
Yes.. I have today completed the whole stuff replacing the timing belt.. Phew...blimey..that was a long job...2 days... I was just going by the sequence of removal to the LS..except there were Cam Shaft sensors.
Ok here what had to be replaced...As I check with one ace mechanic...also. While replacing the timing belt..you have to replace the Timing belt Idler pulley(2) , Water Pump housing, Chain Tensioner Assy( had mild traces of oil contents).
to replace the above..as usual the radiator, front whatever stuff has to be off, this was a pain...As i had to write down in sequence of removal. So that is why it took such long time...and thanks to my friend Gibson who was an invaluable support. Now I am back on the road,
Ok here what had to be replaced...As I check with one ace mechanic...also. While replacing the timing belt..you have to replace the Timing belt Idler pulley(2) , Water Pump housing, Chain Tensioner Assy( had mild traces of oil contents).
to replace the above..as usual the radiator, front whatever stuff has to be off, this was a pain...As i had to write down in sequence of removal. So that is why it took such long time...and thanks to my friend Gibson who was an invaluable support. Now I am back on the road,
thank you
01-15-13, 06:21 AM
#25
Driver School Candidate
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Sewell Parts shows $322.12 for the 90k kit which includes:
Timing Belt
Water Pump w/Gasket
2 Idler Pulleys
2 O-Rings
Coolant
I paid $800 (was told that was dealer cost when I bought my GX). I do wonder just how much work goes into the change and based on the previous post, sounds like 2 long days. Ugggg. Mike
Timing Belt
Water Pump w/Gasket
2 Idler Pulleys
2 O-Rings
Coolant
I paid $800 (was told that was dealer cost when I bought my GX). I do wonder just how much work goes into the change and based on the previous post, sounds like 2 long days. Ugggg. Mike
01-15-13, 03:42 PM
#28
Instructor
I am due as well as I just hit 100k. I bought the Aisin timing belt kit that includes the waterpump, idler. Hydraulic tensioner etc. for $190 from Rockauto. I'm also going to pick up the Toyota coolant and thermostat. I have read on other forums it is a pretty big job but straight forward. I will have my mechanic install. I read somewhere to cut off the old timing belt to keep everything aligned. Anyone have trouble with this job as far as installing the belt itself?
01-19-13, 04:54 AM
#29
I am due as well as I just hit 100k. I bought the Aisin timing belt kit that includes the waterpump, idler. Hydraulic tensioner etc. for $190 from Rockauto. I'm also going to pick up the Toyota coolant and thermostat. I have read on other forums it is a pretty big job but straight forward. I will have my mechanic install. I read somewhere to cut off the old timing belt to keep everything aligned. Anyone have trouble with this job as far as installing the belt itself?
01-20-13, 09:56 AM
#30
Moderator
Thread Starter
This job is not a easy one, as once you drain the coolant, Fan shrouds, Fan and the V belt, and the Engine Under Cover Plates, the Air Cleaner hose and the Radiator Supports around. This was just the easy job. The PITA just begins Once you begin to seperate the Compressor and the Idler Pulley, you must have the Crankshaft pulley removal tool to remove the crankshaft dampers bolt, Mine was pretty hard, I had to soak WD to have them soaked for 2 hours or so. Once you remove then the Crank Sensor Plate is removed, the Timing Belt can be removed( make sure before you remove them check the installation marks on the timing belts by turning them around , if they are disappeared, put a new mark before removing each part.. Now the main part comes when you set the No 1 cylinder to the required compression ratio you need to turn to align it to the marks of the crankshaft timing pulley and oil pump body. Another important part while you remove and install, ensure you have the setting of the crankshaft pulley at the correct angle.
Thumb-rule-
By turning the camshaft timing pulley clockwise it will be easy if you follow two important things.
1. 1/2 teeth turn for the left bank camshaft timing pulley
2. 1 teeth turn for the right bank camshaft timing pulley.
Thumb-rule-
By turning the camshaft timing pulley clockwise it will be easy if you follow two important things.
1. 1/2 teeth turn for the left bank camshaft timing pulley
2. 1 teeth turn for the right bank camshaft timing pulley.