Installation of Timing Belt for Lexus 1UZ VVT + 3UZ

 Installation of Timing Belt for Lexus 1UZ VVT + 3UZ

CAUTION:
Incorrect removal or installation of the Timing belt can result in damage to
internal engine components.

1UZ Timing belt marks

1UZ Timing belt marks

IF RE-USING TIMING BELT, CHECK INSTALLATION
MARKS ON TIMING BELT

Check that there are 3 installation marks on the timing belt by turning the
crankshaft pulley as shown in the illustration.

HINT: If the installation marks
have disappeared, place a new installation mark on the timing belt before
removing each part.

SET NO.1 CYLINDER TO APPROX. 50°ATDC COMPRESSION

Lexus V8 TDC

Lexus V8 TDC

a. Turn the crankshaft pulley and align its groove with timing mark “0” of the No.1 timing belt cover.

1UZ Timing Marks Cam Shafts

Lexus V8 Timing Marks Cam Shafts

b.     Check that the timing marks of the camshaft timing pulleys and timing belt rear plates aligned. If not, turn the crankshaft 1 revolution (360°) .

Lexus V8 Crank Bolt

Lexus V8 Crank Bolt

c.      Turn the crankshaft pulley approximately 50°clockwise, and put the timing mark of the crankshaft pulley in line with the canters of the crankshaft pulley bolt and the No.2 timing belt idler pulley bolt.

NOTICE: If the timing belt is disengaged, having the crankshaft pulley at the wrong angle can cause the piston head and valve head to come into contact with each other when you remove the camshaft timing pulley (step 15), causing damage. So always set the crankshaft pulley at the correct angle.

d.     Remove the crankshaft pulley bolt.

NOTICE: Do not turn the crankshaft pulley.

1UZ Loose Cam Belt

1UZ Loose Cam Belt

TEMPORARILY INSTALL CAM BELT

NOTICE: The engine should be cold.

a.      Remove any oil or water on the crankshaft pulley, oil pump pulley, water pump pulley, No.1 idler pulley and No.2 idler pulley, and keep them clean.

NOTICE: Only wipe the pulleys; do not use any cleansing agent.

b.     Align the installation mark on the cam belt with the timing mark of the crankshaft timing pulley.

c.     Install the timing belt on the crankshaft timing pulley, No.1 idler pulley and No.2 idler pulley.

Lexus V8 Cover And Belt Guide

Lexus V8 Cover And Belt Guide

TIMING BELT COVER SPACER

a.      Install the gasket to the cover spacer.

b.      Install the cover spacer.

Install the belt guide, facing the cup side outward.

Install the timing belt cover with the 4 bolts.

CRANKSHAFT PULLEY

a.      Align the pulley set key with the key groove of the crankshaft pulley.

1UZ Crank Pulley

1UZ Crank Pulley

b.     Using SST and a hammer, tap in the crankshaft pulley.

Lexus V8 Belt Tentioner

Lexus V8 Belt Tentioner

DRIVE BELT TENSIONER

Install the belt tensioner with the bolt and 2
nuts.
Torque: 15.5 Nm (160 kgf-cm, 11 ft.
lbs.)

HINT: Use a bolt 106 mm (4.18 inch) in length.

1UZ-FE Crank Timing Mark

1UZ-FE Crank Timing Mark

CHECK CRANKSHAFT PULLEY POSITION

Check that the timing mark of the crankshaft pulley is aligned with the centers
of the crankshaft pulley and the No.2 cam belt idler pulley bolt.

LH CAMSHAFT TIMING PULLEY

a.      Align the camshaft timing tube knock pin with the knock pin groove of the timing pulley.

b.      Attach the timing pulley to the camshaft timing tube, facing the “L” mark forward.

Lexus V8 Cam Pulley

Lexus V8 Cam Pulley

c.      Using SST, install the 4 pulley bolts. SST 09960-10010

Torque: 7.5 Nm (80 kgf-cm, 66 inch lbs.)

RH CAMSHAFT TIMING PULLEY

a.      Align the camshaft timing tube knock pin with the knock pin groove of the timing pulley.

b.      Attach the timing pulley to the camshaft timing tube, facing the “R” mark forward.

Lexus V8 Cam Right Pulley

Lexus V8 Cam Right Pulley

c.      Using SST, install the 4 pulley bolts. SST 09960-10010

Torque: 7.5 Nm (80 kgf-cm, 66 inch lbs.)

CONNECT TIMING BELT TO LH CAMSHAFT TIMING PULLEY

1UZ-FE Left Timing Marks

1UZ-FE Left Timing Marks

a.      Remove any oil or water on the timing pulley, and keep it clean.

NOTICE: Only wipe the pulleys; do not use any cleansing agent.

b.     Using SST, turn the timing pulley. Align the installation mark on the timing belt with the timing mark of the timing pulley, and hang the timing belt on the timing pulley. SST 09960-10010

V8 Lexus Belt Tension

V8 Lexus Belt Tension

c.      Using SST, turn the LH camshaft timing pulley counter clockwise until there is tension between the crankshaft timing pulley and LH camshaft timing pulley. SST 09960-10010

CONNECT TIMING BELT TO RH CAMSHAFT TIMING PULLEY

a.      Remove any oil or water on the camshaft timing pulley and water pump pulley, and keep them clean.

NOTICE: Only wipe the pulleys; do not use any cleansing agent.

1UZ-FE Right Hand Timing Marks

1UZ-FE Right Hand Timing Marks

b.     Using SST, turn the timing pulley. Align the installation mark on the timing belt with the timing mark of the timing pulley, and hang the timing belt on the timing pulley. SST 09960-10010

Compressing The Tentioner V8 Lexus

Compressing The Tentioner V8 Lexus

SET TIMING BELT TENSIONER

a.      Using a press, slowly press in the push rod using 981 – 9,807 N (100 – 1,000 kgf, 220 – 2,205 lbs.) of pressure.

b.     Align the holes of the push rod and housing, pass a 1.27 mm hexagon wrench through the holes to keep the setting position of the push rod.

c.      Release the press.

d.     Install the dust boot to the belt tensioner.

Tentioner installation 3UZ-FE

Tentioner installation 3UZ-FE

TIMING BELT TENSIONER

a.      Temporarily install the belt tensioner with the 2 bolts.

b.     Alternately tighten the 2 bolts. Torque: 26 Nm (270 kgf-cm, 19 ft. lbs.)

c.      Using pliers, remove the 1.27 mm hexagon wrench from the belt tensioner.

CHECK VALVE TIMING

a.      Temporarily install the crankshaft pulley bolt.

3UZ Turn Crank To TDC

3UZ Turn Crank To TDC

b.     Slowly turn the crankshaft pulley2 revolutions from TDC to TDC.

NOTICE: Always turn the crankshaft pulley clockwise.

Lexus V8 Timing Marks

Lexus V8 Timing Marks

c.      Check that each pulley aligns with the timing marks as shown in the illustration. If the timing marks do not align. remove the timing belt and reinstall it.

css.php
Visit Us On FacebookVisit Us On TwitterVisit Us On Google PlusVisit Us On YoutubeVisit Us On LinkedinVisit Us On Pinterest