Toyota Tundra. Manual — part 1826

Standard bearing center wall thickness

BEARING CENTER WALL THICKNESS SPECIFICATION

29

INSPECT CONNECTING ROD THRUST CLEARANCE (See DISASSEMBLY )

30

INSPECT CONNECTING ROD OIL CLEARANCE

a

Install the crankshaft bearing (see REASSEMBLY )

b

Install the crankshaft (see REASSEMBLY )

c

Lay a strip of Plastigage across the crank pin

Crankshaft main journal diameter (B)

"00"

71 999 to 72 000 mm (2 83460 to 2 83464
in )

"01"

71 998 to 71 999 mm (2 83456 to 2 83460
in )

"02"

71 997 to 71 998 mm (2 83452 to 2 83456
in )

"03"

71 996 to 71 997 mm (2 83448 to 2 83452
in )

"04"

71 995 to 71 996 mm (2 83440 to 2 83448
in )

"05"

71 994 to 71 995 mm (2 83440 to 2 83444
in )

"06"

71 993 to 71 994 mm (2 83436 to 2 83440
in )

"07"

71 992 to 71 993 mm (2 83432 to 2 83436
in )

"08"

71 991 to 71 992 mm (2 83428 to 2 83432
in )

"09"

71 990 to 71 991 mm (2 83424 to 2 83428
in )

"10"

71 989 to 71 990 mm (2 83420 to 2 83424
in )

"11"

71 988 to 71 989 mm (2 83416 to 2 83420
in )

Mark

Specified Condition

"1" 2 488 to 2 491 mm (0 0980 to 0 0981 in )
"2" 2 491 to 2 494 mm (0 0981 to 0 0982 in )
"3" 2 494 to 2 497 mm (0 0982 to 0 0983 in )
"4" 2 497 to 2 500 mm (0 0983 to 0 0984 in )
"5" 2 500 to 2 503 mm (0 0984 to 0 0985 in )

2009 Toyota Tundra

2009 ENGINE Engine Mechanical (1GR-FE) - Tundra

Fig. 342: Laying Strip Of Plastigage Across Crank Pin
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

d

Check that the protrusion of the connecting rod cap is facing the correct direction

e

Apply a light coat of engine oil to the threads of the connecting rod cap bolts

Fig. 343: Checking Protrusion Of Connecting Rod Cap
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

f

Step 1:

1

Install and uniformly tighten the connecting rod cap bolts in sequence

Torque: 25 N*m (250 kgf*cm, 18 ft.*lbf)

Fig. 344: Identifying Connecting Rod Cap Bolt Tightening Sequence
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

2009 Toyota Tundra

2009 ENGINE Engine Mechanical (1GR-FE) - Tundra

g

Step 2:

1

Mark the front side of each connecting rod cap bolt with paint

2

Tighten the bearing cap bolts in step 1 another 90°

h

Remove the 2 bolts, connecting rod cap and lower bearing

Fig. 345: Identifying Bearing Cap Bolts Angle
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

i

Measure the Plastigage at its widest point

Standard oil clearance: 0.026 to 0.046 mm (0.00102 to 0.00181 in.)

Maximum oil clearance: 0.066 mm (0.00260 in.)

If the oil clearance is greater than the maximum, replace the bearings If necessary, replace the
crankshaft

Fig. 346: Measuring Plastigage At Widest Point
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

j

If replacing a bearing, replace it with one that has the same number marked on the connecting rod
There are 4 sizes of standard bearings, marked "1 "2", "3" and "4" accordingly

Standard bearing center wall thickness

NOTE:

Completely remove the Plastigage.

2009 Toyota Tundra

2009 ENGINE Engine Mechanical (1GR-FE) - Tundra

Fig. 347: Identifying Number Marked On Connecting Rod
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

BEARING CENTER WALL THICKNESS SPECIFICATION

k

Remove the crankshaft (see DISASSEMBLY )

l

Remove the crankshaft bearing

31

INSPECT NO. 1 CHAIN

a

Using a spring scale, pull the No 1 chain with a force of 147 N (15 kgf, 33 1 lbf) and measure the
length of the No 1 chain by using a vernier caliper

Maximum chain elongation: 146.8 mm (5.78 in.)

HINT:

Perform the measurement at 3 random places If a measurement is greater than the maximum,
replace the No 1 chain

Mark

Specified Condition

1

1 484 to 1 487 mm (0 05843

to 0 05854 In )

2

1 486 to 1 490 mm (0 05850

to 0 05866 in )

3

1 489 to 1 493 mm (0 05862

to 0 05878 In )

4

1 492 to 1 496 mm (0 05874

to 0 05900 in )

2009 Toyota Tundra

2009 ENGINE Engine Mechanical (1GR-FE) - Tundra