Page 2689 of 4323

A05086
Pry
A05100
A05104
A05105
EM±102
± ENGINE MECHANICALCYLINDER BLOCK
2681 Author: Date:
2005 SEQUOIA (RM1146U)
18. REMOVE REAR OIL SEAL RETAINER
(a) Remove the 7 bolts.
(b) Using a screwdriver, remove the oil seal retainer by prying
the portion between the oil seal retainer and main bearing
cap.
(c) Remove the O±ring.
19. CHECK CONNECTING ROD THRUST CLEARANCE
Using a dial indicator, measure the thrust clearance while mov-
ing the connecting rod back an forth.
Standard thrust clearance:
0.160 to 0.290 mm (0.0063 to 0.0114 in.)
Maximum thrust clearance: 0.35 mm (0.0138 in.)
If the thrust clearance is greater than maximum, replace the
connecting rod assembly(s). If necessary, replace the crank-
shaft.
Connecting rod thickness:
22.880 to 22.920 mm (0.9008 to 0.9024 in.)
20. REMOVE CONNECTING ROD CAPS AND CHECK OIL
CLEARANCE
(a) Check the matchmarks on the connecting rod and see it
cap to ensure correct reassembly.
(b) Remove the 2 connecting rod cap bolts.
(c) Using the 2 removed connecting rod cap bolts, remove
the connecting rod cap and lower bearing by wiggling the
connecting rod cap right and left.
HINT:
Keep the lower bearing inserted with the connecting rod cap.
(d) Clean the crank pin and bearing.
(e) Check the crank pin and bearing for peeling and
scratches.
If the crank pin or bearing is damaged, replace the bearings. If
necessary, replace the crankshaft.
Page 2690 of 4323

A05102
Plastigage
A05101
A05103
A05852
A05087A05853A05175
Number
Mark
Number
Mark
Number
Mark No.1
No.2No.3No.4
Connecting rod cap
Crankshaft
Use bearingNumber mark1
2
34 76 1
21
1 2
1
32
23
12
33
24
13
344
23
5
EXAMPLE:
Connecting rod cap º3º + Crankshaft º1º
= Total number 4 (Use bearing º4º)
± ENGINE MECHANICALCYLINDER BLOCK
EM±103
2682 Author: Date:
2005 SEQUOIA (RM1146U)
(f) Lay a strip of Plastigage across the crank pin.
(g) Install the connecting rod cap with the 2 bolts.
(see page EM±119)
NOTICE:
Do not turn the crankshaft.
(h) Remove the 2 bolts, connecting rod cap and lower bear-
ing. (See procedure (b) and (c) above)
(i) Measure the Plastigage at its widest point.
Standard oil clearance:
0.021 to 0.047 mm (0.0008 to 0.0019 in.)
Maximum oil clearance: 0.059 mm (0.0023 in.)
If the oil clearance is greater than maximum, replace the bear-
ings. If necessary, replace the crankshaft.
HINT:
If using a standard bearing, replace it with one having the same
number. If the number of the bearing cannot be determined, se-
lect the correct bearing by adding together the numbers im-
printed on the connecting rod cap and crankshaft, then select-
ing the bearing with the same number as the total. There are 6
sizes of standard bearings, marked º2º, º3º, º4º, º5º, º6º and º7º.
Page 2691 of 4323

A04852
Ridge
Reamer
A05096
A05095
1
2
4
8
6
3
5
97
10 EM±104
± ENGINE MECHANICALCYLINDER BLOCK
2683 Author: Date:
2005 SEQUOIA (RM1146U)
Reference
Connecting rod big end inside diameter:
Mark º1º55.000 to 55.006 mm (2.1654 to 2.1656 in.)
Mark º2º55.006 to 55.012 mm (2.1656 to 2.1658 in.)
Mark º3º55.012 to 55.018 mm (2.1658 to 2.1661 in.)
Mark º4º55.018 to 55.024 mm (2.1661 to 2.1663 in.)
Crankshaft crank pin diameter:
Mark º1º51.994 to 52.000 mm (2.0470 to 2.0472 in.)
Mark º2º51.988 to 51.994 mm (2.0468 to 2.0470 in.)
Mark º3º51.982 to 51.988 mm (2.0465 to 2.0468 in.)
Standard sized bearing center wall thickness:
Mark º2º1.487 to 1.490 mm (0.0585 to 0.0587 in.)
Mark º3º1.490 to 1.493 mm (0.0587 to 0.0588 in.)
Mark º4º1.493 to 1.496 mm (0.0588 to 0.0589 in.)
Mark º5º1.496 to 1.499 mm (0.0589 to 0.0590 in.)
Mark º6º1.499 to 1.502 mm (0.0590 to 0.0591 in.)
Mark º7º1.502 to 1.505 mm (0.0591 to 0.0593 in.)
(j) Completely remove the Plastigage.
21. REMOVE PISTON AND CONNECTING ROD AS-
SEMBLIES
(a) Using a ridge reamer, remove all the carbon from the top
of the cylinder.
(b) Push the piston, connecting rod assembly and upper
bearing through the top of the cylinder block.
HINT:
Keep the bearings, connecting rod and cap together.
Arrange the piston and connecting rod assemblies in cor-
rect order.
22. CHECK CRANKSHAFT THRUST CLEARANCE
Using a dial indicator, measure the thrust clearance while prying
the crankshaft back and forth with a screwdriver.
Standard thrust clearance:
0.020 to 0.220 mm (0.0008 to 0.0087 in.)
Maximum thrust clearance: 0.30 mm (0.0118 in.)
If the thrust clearance is greater than maximum, replace the
thrust washers as a set.
Thrust washer thickness:
2.440 to 2.490 mm (0.0961 to 0.0980 in.)
23. REMOVE MAIN BEARING CAPS AND CHECK OIL
CLEARANCE
(a) Uniformly loosen and remove the 10 main bearing cap
bolts in several passes, in the sequence shown.
Page 2692 of 4323

A05093
A05097
Plastigage
A05095
A05098
± ENGINE MECHANICALCYLINDER BLOCK
EM±105
2684 Author: Date:
2005 SEQUOIA (RM1146U)
(b) Using 2 screwdrivers, pry out the main bearing cap, and
remove the 5 main bearing caps, 5 lower bearings and 2
lower thrust washers (No.3 main bearing cap only).
NOTICE:
Be careful not to damage the cylinder block.
HINT:
Keep the lower bearing and main bearing cap together.
Arrange the main bearing caps and lower thrust washers
in correct order.
(c) Lift out the crankshaft.
HINT:
Keep the upper bearings and upper thrust washers together
with the cylinder block.
(d) Clean each main journal and bearing.
(e) Check each main journal and bearing for peelings and
scratches.
If the journal or bearing is damaged, replace the bearings. If
necessary, replace the crankshaft.
(f) Place the crankshaft on the cylinder block.
(g) Lay a strip of Plastigage across each journal.
(h) Install the main bearing caps. (See page EM±119)
NOTICE:
Do not turn the crankshaft.
(i) Remove the main bearing caps.
(See procedure (a) and (b) above)
(j) Measure the Plastigage at its widest point.
Standard clearance:
No.1, No.5
0.028 to 0.046 mm (0.0011 to 0.0018 in.)
Others
0.040 to 0.058 mm (0.0016 to 0.0023 in.)
Maximum clearance: 0.065 mm (0.0026 in.)
If the oil clearance is greater than maximum, replace the bear-
ings. If necessary, replace the crankshaft.
Page 2693 of 4323

A05089A05088A05090A05176
Number Mark
Number
Mark
Number
Mark No.1No.2 No.3No.4 No.5
No.1No.2
No.3
No.4No.5
Cylinder block (A)
Crankshaft (B)Use bearing
+
24 to 28 18 to 23 12 to 176 to 11 0 to 5 No.1, No.5
EXAMPLE:
Cylinder block º08º + Crankshaft º06º
= Total number 14 (Use bearing º5º)3
4
5
6
7 Mark
Cylinder block (A)
Crankshaft (B)Use bearing
+
24 to 28 18 to 23 12 to 176 to 11 0 to 5
EXAMPLE:
Cylinder block º08º + Crankshaft º06º
= Total number 14 (Use bearing º3º)3
4
5 1
2 Others
Mark EM±106
± ENGINE MECHANICALCYLINDER BLOCK
2685 Author: Date:
2005 SEQUOIA (RM1146U)
HINT:
If using a standard bearing, replace it with one having the same
number. If the number of the bearing cannot be determined, se-
lect the correct bearing by adding together the numbers im-
printed on the cylinder block and crankshaft, then refer to the
table below for the appropriate bearing number. There are 5
sizes of the standard bearings. For No.1 and No.5 position
bearings, use bearings marked º3º, º4º, º5º, º6º and º7º. For oth-
ers position bearings, use bearings marked º1º, º2º, º3º, º4º and
º5º.
Reference
Cylinder block main journal bore diameter (A):
Mark º00º72.000 mm (2.8346 in.)
Mark º01º72.001 mm (2.8347 in.)
Mark º02º72.002 mm (2.8347 in.)
Mark º03º72.003 mm (2.8348 in.)
Mark º04º72.004 mm (2.8348 in.)
Mark º05º72.005 mm (2.8348 in.)
Mark º06º72.006 mm (2.8349 in.)
Mark º07º72.007 mm (2.8349 in.)
Mark º08º72.008 mm (2.8350 in.)
Mark º09º72.009 mm (2.8350 in.)
Mark º10º72.010 mm (2.8350 in.)
Mark º11º72.011 mm (2.8351 in.)
Mark º12º72.012 mm (2.8351 in.)
Mark º13º72.013 mm (2.8352 in.)
Mark º14º72.014 mm (2.8352 in.)
Page 2694 of 4323

A04862
± ENGINE MECHANICALCYLINDER BLOCK
EM±107
2686 Author: Date:
2005 SEQUOIA (RM1146U)Mark º15º
72.015 mm (2.8352 in.)
Mark º16º72.016 mm (2.8353 in.)
Crankshaft main journal diameter (B):
Mark º00º67.000 mm (2.6378 in.)
Mark º01º66.999 mm (2.6378 in.)
Mark º02º66.998 mm (2.6377 in.)
Mark º03º66.997 mm (2.6377 in.)
Mark º04º66.996 mm (2.6376 in.)
Mark º05º66.995 mm (2.6376 in.)
Mark º06º66.994 mm (2.6376 in.)
Mark º07º66.993 mm (2.6375 in.)
Mark º08º66.992 mm (2.6375 in.)
Mark º09º66.991 mm (2.6374 in.)
Mark º10º66.990 mm (2.6374 in.)
Mark º11º66.989 mm (2.6374 in.)
Mark º12º66.988 mm (2.6373 in.)
Standard bearing center wall thickness:
No.1 and No.5
Mark º3º2.487 to 2.490 mm (0.0979 ± 0.0980 in.)
Mark º4º2.490 to 2.493 mm (0.0980 ± 0.0981 in.)
Mark º5º2.493 to 2.496 mm (0.0981 ± 0.0983 in.)
Mark º6º2.496 to 2.499 mm (0.0983 ± 0.0984 in.)
Mark º7º2.499 to 2.502 mm (0.0984 ± 0.0985 in.)
Others
Mark º1º2.481 to 2.484 mm (0.0977 ± 0.0978 in.)
Mark º2º2.484 to 2.487 mm (0.0978 ± 0.0979 in.)
Mark º3º2.487 to 2.490 mm (0.0979 ± 0.0980 in.)
Mark º4º2.490 to 2.493 mm (0.0980 ± 0.0981 in.)
Mark º5º2.493 to 2.496 mm (0.0981 ± 0.0983 in.)
(k) Completely remove the Plastigage.
24. REMOVE CRANKSHAFT
(a) Lift up the crankshaft.
(b) Remove the 5 upper main bearings and 2 upper thrust
washers from the cylinder block.
HINT:
Arrange the main bearing caps, bearings and thrust washers in
correct order.
25. CHECK FIT BETWEEN PISTON AND PISTON PIN
Try to move the piston back and forth on the piston pin.
If any movement is felt, replace the piston and pin as a set.
Page 2695 of 4323
A04873
A04860
A04887
A04888
EM±108
± ENGINE MECHANICALCYLINDER BLOCK
2687 Author: Date:
2005 SEQUOIA (RM1146U)
26. REMOVE PISTON RINGS
(a) Using a piston ring expander, remove the 2 compression
rings.
(b) Remove the 2 side rails and oil ring by hand.
HINT:
Arrange the piston rings in correct order only.
27. DISCONNECT CONNECTING ROD FROM PISTON
(a) Using a small screwdriver, pry out the 2 snap rings.
(b) Gradually heat the piston to approx. 60°C (140°F).
(c) Using a plastic±faced hammer and brass bar, lightly tap
out the piston pin and pin and remove the connecting rod.
HINT:
The piston and pin are a matched set.
Arrange the pistons, pins, rings, connecting rods and
bearings in correct order.
Page 2696 of 4323
EM0EB±17
A04849
A04850A04210A04212A05178
Cylinder Block Side
Main Bearing Cap Side
A04853
± ENGINE MECHANICALCYLINDER BLOCK
EM±109
2688 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION
1. CLEAN CYLINDER BLOCK
(a) Using a gasket scraper, remove all the gasket material
from the top surface of the cylinder block.
(b) Using a soft brush and solvent, thoroughly clean the cylin-
der block.
2. INSPECT CYLINDER BLOCK
(a) Inspect for flatness.
Using a precision straight edge and feeler gauge, mea-
sure the surfaces contacting the cylinder head and main
bearing cap for warpage.
Maximum warpage: 0.07 mm (0.0028 in.)
If warpage is greater than maximum, replace the cylinder block.
(b) Visually check the cylinder for vertical scratches.
If deep scratches are present, rebore all the 8 cylinders and re-
place all the 8 pistons. (See page EM±116) If necessary, re-
place the cylinder block.