Timing Belt

swordfish · September 11, 2005

am doing timing belt on ls400-new belt has 3 marks on it but none line up where the crankshaft drive is. Two will line up with cam gear marks, the third is then about 4oclock on the L hand pulley. How can i get it installed?

ROYT · September 11, 2005

W/shop manual says 'align the installation mark on the belt with the drilled mark on the crankshaft timing pulley. Pic. shows bottom pulley with dot, arrow on belt in line with dot and the letters CR .

There are about 30 steps to follow in the order of assembly

Here is a bit of it, regarding just fitting the belt.

Next install the RH c/shaft timing pulley [80ft-lb]RH mark forward

Next the LH -------"----------------------------------LH----------

Set # 1 cylinder to TDC on compression[crankshaft pulley position] Turn pulley and align its groove with the 0 [degree] timing mark of the # 1 timing belt cover

Turn the camshaft pulley and align marks on the pulley and the belt back plate.

Install the belt to to the LH c/shaft timing pulley.The mark on the belt matches with the end of the fan bracket.slightly turn the LH c/shaft pulley clockwise.

Align the mark on the belt with the mark c/shaft pulley.

Align the marks of the Lh c/shaft and the timing belt rear plate.

Repeat with the RH side

Best if you get proper instructions........disaster if you get it wrong!!!!!!!

swordfish · September 11, 2005

W/shop manual says 'align the installation mark on the belt with the drilled mark on the crankshaft timing pulley. Pic. shows bottom pulley with dot, arrow on belt in line with dot and the letters CR .
There are about 30 steps to follow in the order of assembly

Here is a bit of it, regarding just fitting the belt.

Next install the RH c/shaft timing pulley [80ft-lb]RH mark forward

Next the LH -------"----------------------------------LH----------

Set # 1 cylinder to TDC on compression[crankshaft pulley position] Turn pulley and align its groove with the 0 [degree] timing mark of the # 1 timing belt cover

Turn the camshaft pulley and align marks on the pulley and the belt back plate.

Install the belt to to the LH c/shaft timing pulley.The mark on the belt matches with the end of the fan bracket.slightly turn the LH c/shaft pulley clockwise.

Align the mark on the belt with the mark c/shaft pulley.

Align the marks of the Lh c/shaft and the timing belt rear plate.

Repeat with the RH side

Best if you get proper instructions........disaster if you get it wrong!!!!!!!

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swordfish · September 11, 2005

hey thanks

there is my problem, the belt has no mark on it for the crank position. lining up 2 marks on the cams leaves another mark just about 4 oclock on L cam but nothing anywhere near the crank . FIts ok but noway to line it up properly. Must be faulty. wasnt a genuine part, so there. thought i might have been missing something

swordfish · September 11, 2005

I went ahead and put tensioner on and spun engine around twice so cams line up again correctly, and tdc on crank pulley is out about 10 degrees, so its not right.

ROYT · September 11, 2005

Check out the USA LOC forums for LS 400, I'm sure the full intsructions are

downloadable from there.......there's bags of info on there, 'cos there are many more owners in the USA! :winky:

swordfish · September 13, 2005

final outcome- place i bought belt is taking it back for a refund-i went and bought a genuine belt from lexus and it has all the correct marks and fits!