Toyota Sequoia (2005). Manual - part 676

Z14455

EM6525

EM0227

A04223

Tension
Portion

EM–114

–

ENGINE MECHANICAL

CYLINDER BLOCK

2693

(2)

Check for twist.

Maximum twist:
0.15 mm (0.0059 in.) per 100 mm (3.94 in.)

If twist is greater than maximum, replace the connecting rod as-
sembly.

(f)

Inspect the piston pin oil clearance.
(1)

Using a caliper gauge, measure the inside diameter
of the connecting rod bushing.

Bushing inside diameter:
22.005 to 22.014 mm (0.8663 to 0.8667 in.)

(2)

Using a micrometer, measure the piston pin diame-
ter.

Piston pin diameter:
21.997 to 22.009 mm (0.8660 to 0.8664 in.)
(3)

Subtract the piston pin diameter measurement from
the bushing inside diameter measurement.

Standard oil clearance:
0.005 to 0.011 mm (0.0002 to 0.0004 in.)
Maximum oil clearance: 0.05 mm (0.0020 in.)

If the oil clearance is greater than maximum, replace the bush-
ing. If necessary, replace the piston and piston pin as a set.

(g)

Using vernier calipers, measure the tension portion of the
connecting rod bolt.
Standard diameter:
7.200 to 7.300 mm (0.2835 to 0.2874 in.)
Minimum diameter: 7.00 mm (0.2756 in.)

If the diameter is less than the minimum, replace the bolt.

A05121

A05854

A05122

A05169

–

ENGINE MECHANICAL

CYLINDER BLOCK

EM–115

2694

5.

INSPECT CRANKSHAFT

(a)

Inspect for circle runout.
(1)

Place the crankshaft on V–blocks.

(2)

Using a dial indicator, measure the circle runout at
the center journal.

Maximum circle runout: 0.04 mm (0.0016 in.)

If the circle runout is greater than maximum, replace the crank-
shaft.

(b)

Inspect the main journals and crank pins.
(1)

Using a micrometer, measure the diameter of each
main journal and crank pin.

Main journal diameter:
66.988 to 67.000 mm (2.6373 to 2.6378 in.)
Crank pin diameter:
51.982 to 52.000 mm (2.0465 to 2.0472 in.)

If the diameter is not as specified, check the oil clearance (See
page 

EM–101

). If necessary, replace the crankshaft.

(2)

Check each main journal and crank pin for taper
and out–of–round as shown.

Maximum taper and out–of–round:
0.02 mm (0.0008 in.)

If the taper and out–of–round is greater than maximum, replace
the crankshaft.

EM123–04

A23367

Size Mark

LH Piston

RH Piston

Size Mark

30.75 mm

Front Mark
(1 Cavity)

Front Mark
(2 Cavities)

P20665

SST

P20666

Oil
Hole

EM–116

–

ENGINE MECHANICAL

CYLINDER BLOCK

2695

REPLACEMENT

1.

REPLACE OVERSIZED (O/S) PISTONS FOR CYL-
INDER BORING

HINT:

Bore all the 8 cylinders to match the oversized piston out-
side diameter.

Replace all the piston rings with ones to match the over-
sized pistons.

(a)

Keep 8 new oversized pistons.
O/S 0.50 piston diameter:
94.402 to 94.430 mm (3.7166 to 3.7177 in.)

HINT:
The shape of the piston differs for the LH and RH banks. The
LH piston is marked with 1 cavity and ”2”, the RH piston with 2
cavities and ”2”.
(b)

Using a micrometer, measure the piston diameter at right
angles to the piston pin center line, 30.75 mm (1.2106 in.)
from the piston head.

(c)

Calculate the size to be rebored for each cylinder as fol-
lows:
Size to be rebored = P + C – H
P = Piston diameter
C = Piston clearance:
0.030 to 0.071 mm (0.0012 to 0.0028 in.)
H = Allowance for honing: 0.02 mm (0.0008 in.) or less

(d)

Bore and hone the cylinders to calculated dimensions.
Maximum honing: 0.02 mm (0.0008 in.)

NOTICE:
Excess honing will destroy the finished roundness.

2.

REPLACE CONNECTING ROD BUSHINGS

(a)

Using SST and a press, press out the bushing.
SST

09222–30010

(b)

Align the oil holes of a new bushing and the connecting
rod.

(c)

Using SST and a press, press in the bushing.
SST

09222–30010

P20667

P20668

A04868

A04867

SST

A04858

Cut Position

–

ENGINE MECHANICAL

CYLINDER BLOCK

EM–117

2696

(d)

Using a pin hole grinder, hone the bushing to obtain the
standard specified clearance (See page 

EM–101

) be-

tween the bushing and piston pin.

(e)

Check the piston pin fit at normal room temperature. Coat
the piston pin with engine oil, and push it into the connect-
ing rod with your thumb.

3.

REPLACE CRANKSHAFT FRONT OIL SEAL (See
page 

LU–13

)

4.

REPLACE CRANKSHAFT REAR OIL SEAL

HINT:
There are 2 methods ((a) and (b)) to replace the oil seal.
(a)

If the rear oil seal retainer is removed from the cylinder
block:
(1)

Using a screwdriver and hammer, tap out the oil
seal.

(2)

Using SST and a hammer, tap in a new oil seal until
its surface is flush with the rear oil seal retainer
edge.

SST

09223–56010

(3)

Apply MP grease to the oil seal lip.

(b)

If the rear oil seal retainer is installed to the cylinder block:
(1)

Using a knife, cut off the oil seal lip.

(2)

Using a screwdriver, pry out the oil seal.

NOTICE:
Be careful not to damage the crankshaft. Tape the screw-
driver tip.