compression ratio LEXUS ES300 2005 Repair Manual

P19471
Compression Gauge
- ENGINE MECHANICALENGINE (3MZ-FE)
14-3
2095 Author
: Date
:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
9. INSPECT COMPRESSION
(a) Warm up and stop the engine.
(b) Remove the intake air surge tank (see page 11-13).
(c) Disconnect the injector connectors.
(d) Remove the ignition coils.
(e) Remove the spark plugs.
(f) Inspect the cylinder compression pressure.
(1) Insert a compression gauge into the spark plug
hole.
SST 09992-00500
(2) Fully open the throttle.
(3) While cranking the engine, measure the compres-
sion pressure.
Compression pressure:
1.5 MPa (15.3 kgf/cm
2, 218 psi)
Minimum pressure:
1.0 MPa (10.2 kgf/cm
2, 145 psi)
Difference between each cylinder:
100 kPa (1.0 kgf/cm
2, 15 psi)
NOTICE:

Always use a fully-charged battery to obtain engine
speed of 250 rpm or more.

Check the other cylinder's compression pressure in
the same way.

This measurement must be done as quickly as pos-
sible.
(4) If the cylinder compression is low, pour a small
amount of engine oil into the cylinder through the
spark plug hole, then inspect again.
HINT:

If adding oil increases the compression, the piston rings
and/or cylinder bore may be worn or damaged.

If pressure stays low, the valve may be sticking or seated
improperly, or there may be leakage past the gasket.
10. INSPECT CO/HC
HINT:
The ECM properly controls the CO/HC concentration in the emission gas.
(a) Start the engine.
(b) Run the engine at 2,500 rpm for approximately 180 seconds.
(c) Insert the CO/HC meter testing probe at least 40 cm (1.3 ft) into the tailpipe during idling.
(d) Check the CO/HC concentration at idle and/or at 2,500 rpm.
HINT:
When doing the 2 mode (with the engine is at idle and at 2,500 rpm) tests, these measuring order are pre-
scribed by the applicable local regulations.
If the CO/HC concentration does not comply with the regulations, troubleshoot in the order given below.
(1) Check the heated oxygen sensor operation (see page 05-126).

A78326
Turn
A05052
A52840
A78327
Approximately 60
Turn
- ENGINE MECHANICALPARTIAL ENGINE ASSY (3MZ-FE)
14-41
2133 Author
: Date
:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
18. REMOVE TIMING BELT
(a) Set the No. 1 cylinder to the TDC/compression.
(1) Temporarily install the crankshaft pulley bolt and
washer to the crankshaft.
(2) Turn the crankshaft clockwise, then align the timing
mark of the crankshaft timing pulley with the oil
pump body.
(3) Check that the timing marks of the camshaft timing
pulleys and the timing belt No. 3 cover are aligned.
If not, turn the crankshaft by 1 revolution (360).
(4) Remove the crankshaft pulley bolt.
(b) If reusing the timing belt, check that there are 3 installa-
tion marks on the timing belt as shown in the illustration.
(1) If the installation marks have disappeared, put new
installation marks on the timing belt before remov-
ing.
(c) Set the No. 1 cylinder to approximately 60 BTDC/com-
pression.
(1) Turn the crankshaft counterclockwise by approxi-
mately 60.
NOTICE:
If the timing belt is disengaged, having the crankshaft
pulley set at the wrong angle can cause contact of the pis-
ton head with the valve head when removing the camshaft
timing pulley and camshaft, which causes damage. So al-
ways set the crankshaft pulley at the correct angle.
(d) Remove the timing belt tensioner.
NOTICE:
Do not reinstall the tensioner with its plunger extended.

P12418A32958
A78320
No. 1:
No. 2:2A
A86598
Lower Side
Rail
No. 2
Compression Expander No. 1
Compression
Front Mark
Upper Side
Rail
P12402
A78806
No. 1 and No. 4:
Upper
Lower
22.4 mm (0.882 in.)No. 2 and No. 3:
19.0 mm (0.748 in.) 14-176
- ENGINE MECHANICALCYLINDER BLOCK ASSY (3MZ-FE)
2268 Author
: Date
:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
36. INSTALL PISTON PIN HOLE SNAP RING
(a) Using a small screwdriver, install a new snap ring on the
other end of the piston pin hole.
HINT:
Be sure that the end of gap of the snap ring is not aligned with
the pin hole cutout of the piston.
37. INSTALL PISTON RING SET
(a) Install the expander and 2 side rails by hand.
(b) Using a piston ring expander, install the 2 compression
rings.
HINT:
The No. 2 compression ring is installed with the code mark º2Aº
facing upward as shown in the illustration.
(c) Position the piston rings so that the ring ends are ar-
ranged as shown in the illustration.
NOTICE:
Do not align the ring ends.
38. INSTALL CONNECTING ROD BEARING
(a) Align the key of the bearing with the keyway of the con-
necting rod or cap.
NOTICE:
Clean the backside of the bearing and bearing surface of
the connecting rod. The surface should be free of dust and
oils.
39. INSTALL CRANKSHAFT BEARING
HINT:
Crankshaft bearings come in widths of 22.4 mm (0.882 in.) and
19.0 mm (0.748 in.). Install the 22.4 mm (0.882 in.) bearings in
the No. 1 and No. 4 cylinder block journal positions with the
main bearing caps. Install the 19.0 mm (0.748 in.) bearings in
the No. 2 and No. 3 positions.
(a) Clean each main journal and the bearing.

F41526
SST
SST
SST
F41500
SST
F41501
Rack Guide
Spring Cap
SST
F41502
51-26
- POWER STEERINGRACK & PINION POWER STEERING GEAR ASSY
2601 Author
: Date
:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
(b) Using 2 SSTs, remove the 2 steering rack ends sub-assy
and 2 claw washers.
SST 09922-10010
NOTICE:

Use SST 09922-10010 in the direction shown in the il-
lustration.

Securely hold the steering rack end sub-assy with a
SST.
30. REMOVE RACK GUIDE
(a) Using SST, remove the rack guide spring cap nut.
SST 09922-10010
NOTICE:
Use SST 09922-10010 in the direction shown in the illustra-
tion.
(b) Using SST, remove the rack guide spring cap.
SST 09631-10021
(c) Remove the compression spring and rack guide.
31. REMOVE POWER STEERING CONTROL VALVE
(a) Using a socket wrench (27 mm), remove the rack housing
cap.