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Posts posted by 92Lex
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I replaced both of these gaskets...they came with the waterpump I purchased... then install in reverse order:
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Put high temperature sealant on new water pump like so and remount:
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*Water Pump*
Remove water pump (5)12mm bolts (1)12mm nut...clean up all the old gasket material real good before mounting new water pump:
Water pump removed:
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*Water Pump*
Remove water inlet housing (the housing that has the coolant filler bolt):
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If you're ONLY replacing the timing belt and not the water pump, then skip these next steps and go to the last post on the next page (3).
*Water Pump*
Remove right head ignition coil:
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Remove idler pulley No.1 (1)10mm hex socket:
Torque specs: 25ft-lbs
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Remove idler pulley No.2 (1)14mm bolt:
Torque specs: 25ft-lbs
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Remove timing belt guide, then remove the timing belt from the vehicle:
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Remove timing belt cover and spacer (4)10mm bolts:
Spacer:
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Remove fan bracket (4)bolts and (1)nut:
Torque specs: (12mm) 12ft-lbs
(others) 22ft-lbs
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Use the harmonic balancer pulley remover to remove the crankshaft pulley:
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Remove crankshaft pulley bolt (22mm), I used a breaker bar and braced it against the floor like in the picture...then cranked the motor for a second to get the bolt loose (or just just an impact wrench).
Torque specs: 181ft-lbs
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Using a 14mm socket, slightly turn the right head camshaft pulley bolt clockwise to loosen the tension on the timing belt...then take the timing belt off of the camshaft pulleys:
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Set crankshaft pulley mark to the 0 mark like in the picture above, make sure the marks on your camshaft pulleys line up as well...then remove timing belt tensioner (2)12mm bolts:
Torque specs: 12ft-lbs
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Remove drive belt tensioner (2)12mm bolts:
Torque specs: 12ft-lbs
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Make sure the battery is disconnected before you remove the alternator.
Remove 14mm bolts and disconnect plugs to the alternator then remove it:
Torque specs: 26ft-lbs
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Locate the (3)12mm bolts, disconnect the crank position sensor wire from each housing, then remove both distributor housings:
Torque specs: 13ft-lbs
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Remove distributor rotors (2)8mm screws:
Torque specs: 34in-lb
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Remove distributor caps (3)8mm screws:
Torque specs: 34in-lb
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Locate 10mm and 12mm screws and remove them, then disconnect sensors, water bypass pipe then remove timing belt covers for right head and left head of engine (timing belt covers are the 2 plastic things covering half of the distributor caps):
Torque specs: 10mm-69in-lb
12mm-12ft-lb
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Remove drive belt idler pulley:
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Disconnect the small vacuum hose, remove (4)10mm bolts to remove left head timing belt cover, then do the same for the right head timing belt cover:
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Remove oil cap and (2)10mm bolts to remove left head engine wire cover:
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Remove right head engine wire cover-(1)10mm bolt:
How To : Timing Belt & Water Pump
in Workshop Tutorials - Lexus How To Guides
Posted
Then just install everything in the reverse order that you removed them...to make lining up your camshaft timing pulleys easier later, make sure the installation mark on the timing belt and crankshaft line up like this:
When installing the belt to the camshaft pulleys do the left head cam first, do the same with the right head cam then install the tensioner. Once you're done installing your timing belt, turn your crankshaft from TDC to TDC stopping on the "0" mark just to make sure your camshaft pulleys line up with the marks on the engine. Install everything in reverse then fill up with coolant and top off with ATF if needed.
(I listed the torque specs for each part below each picture)