Toyota
4Runner GRN210 215 UZN210 215
Repair Manual
1Gr-Fe Engine Mechanical
Engine Unit
Inspect the camshaft for runout.
Place the camshaft on V-blocks.
Using a dial indicator, measure the runout at the center journal.
- Maximum runout:
- 0.06 mm (0.0024 in.)
Inspect the cam lobes.
Using a micrometer, measure the cam lobe height.
- Standard cam lobe height:
- Intake:
- 44.168 to 44.268 mm (1.7389 to 1.7428 in.)
- Exhaust:
- 44.580 to 44.680 mm (1.7551 to 1.7591 in.)
- Minimum cam lobe height:
- Intake:
- 44.018 mm (1.7330 in.)
- Exhaust:
- 44.430 mm (1.7492 in.)
Inspect the camshaft journals.
Using a micrometer, measure the journal diameter.
- No. 1 journal diameter:
- 35.971 to 35.985 mm (1.4162 to 1.4167 in.)
- Other journal diameter:
- 22.959 to 22.975 mm (0.9039 to 0.9045 in.)
Fix the intake camshaft with a vise.
- NOTICE:
- Be careful not to damage the camshaft.
Align the knock pin hole in the camshaft timing gear assembly with the knock pin of the camshaft, and install the camshaft timing gear assembly with the bolt.
- Torque:
- 100 N*m{1,020 kgf*cm, 74 ft.*lbf}
Confirm the camshaft timing gear assembly is locked.
Release the lock pin.
Cover 4 oil paths of the cam journal with a masking tape as shown in the illustration.
- HINT:
- One of the 2 grooves on the cam journal is for retards (upper) and the other is for advances (lower). Each groove has 2 oil paths. Plug one of the oil paths for each groove with rubber pieces before wrapping the cam journal with tape.
Prick a hole in the tape placed on the advance side path. Prick a hole in the retard side path, on the opposite side to that of the advance side path, as shown in the illustration.
Apply about 200 kPa (2.0 kgf/cm2) of air pressure to the two broken paths (the advance side path and the retard side path).
- NOTICE:
- Cover the paths with a shop rag to avoid oil splashing.
Confirm that the camshaft timing gear assembly rotates in the advance direction when reducing the air pressure applied to the retard path.
- HINT:
- When the lock pin is released, the camshaft timing gear rotates in the advance direction.
When the camshaft timing gear comes to the most advanced position, release the air pressure from the retard side path, and then release the air pressure from the advance side path.
- NOTICE:
- The camshaft timing assembly gear occasionally shifts to the retard side abruptly, if air compression of the advanced side path is released first. It often results in the breakage of the lock pin.
Check for smooth revolution.
Except the position where the lock pin meets at the most retard angle, turn the camshaft timing gear assembly back and forth and check the movable range and that there is no disturbance.
- Standard:
- Movable smoothly in the range about 31°
- NOTICE:
- Be sure to perform this check by hand, instead of air pressure.
Check the lock in the most retarded position.
Confirm that the camshaft timing gear assembly is locked at the most retarded position.
Remove the set bolt and camshaft timing gear assembly.
- NOTICE:
- Be sure not to remove the other 3 bolts.
Using vernier calipers, measure the outside thread diameter of the bolt.
- Standard outside diameter:
- 10.85 to 11.00 mm (0.4272 to 0.4331 in.)
- Minimum outside diameter:
- 10.7 mm (0.421 in.)
Using a spring scale, pull the chain sub assembly with a force of 147 N (15.0 kgf, 33.1 lbf) and measure the length of the chain sub assembly by vernier calipers.
- Maximum chain elongation:
- 146.8 mm (5.780 in.)
- NOTICE:
- Perform the same measurements by pulling at random in 3 or more places to obtain an average length.
Using a spring scale, pull the chain sub assembly with a force of 147 N (15.0 kgf, 33.1 lbf) and measure the length of the chain sub assembly by vernier calipers.
- Maximum chain elongation:
- 146.8 mm (5.780 in.)
- NOTICE:
- Perform the same measurements by pulling at random in 3 or more places to obtain an average length.
Put the No. 1 chain on the larger gear of the camshaft timing gear assembly.
Using vernier calipers, measure the timing gear with the chain.
- Minimum gear diameter (with chain):
- 115.5 mm (4.547 in.)
- NOTICE:
- The vernier calipers must contact the chain rollers for the measuring.
Put the No. 2 chain on the smaller gear of the camshaft timing gear assembly.
Using vernier calipers, measure the timing gear with the chain.
- Minimum gear diameter (with chain):
- 73.1 mm (2.878 in.)
- NOTICE:
- The vernier calipers must contact the chain rollers for the measuring.
Put the No. 2 chain on the camshaft timing gear.
Using vernier calipers, measure the camshaft timing gear diameter with the chain .
- Minimum gear diameter (with chain):
- 73.1 mm (2.878 in.)
- NOTICE:
- The vernier calipers must contact the chain rollers for the measuring.
Put the No. 1 chain on the crankshaft timing gear.
Using vernier calipers, measure the crankshaft timing gear diameter with the chain.
- Minimum gear diameter (with chain):
- 61.0 mm (2.402 in.)
- NOTICE:
- The vernier calipers must contact the chain rollers for the measuring.
Put the No. 1 chain on the idle gear.
Using vernier calipers, measure the idle gear with the chain.
- Minimum gear diameter (with chain):
- 61.0 mm (2.402 in.)
- NOTICE:
- The vernier calipers must contact the chain rollers for the measuring.
Using a micrometer, measure the idle gear shaft diameter.
- Idle gear shaft diameter:
- 22.987 to 23.000 mm (0.9050 to 0.9055 in.)
Using a caliper gauge, measure the inside diameter of the idle gear.
- Idle gear inside diameter:
- 23.02 to 23.03 mm (0.9063 to 0.9067 in.)
Subtract the idle gear shaft diameter measurement from the idle gear inside diameter measurement.
- Standard oil clearance:
- 0.020 to 0.043 mm (0.0008 to 0.0017 in.)
- Maximum oil clearance:
- 0.093 mm (0.0037 in.)
Check that the plunger moves smoothly when the ratchet pawl is raised with your finger.
Release the ratchet pawl and check that the plunger is locked in place by the ratchet pawl and does not move when pushing with your finger.
Check that the plunger moves smoothly.
Measure the worn depth of the chain tensioner slipper.
- Maximum depth:
- 1.0 mm (0.039 in.)
Check that the plunger moves smoothly.
Measure the worn depth of the chain tensioner slipper.
- Maximum depth:
- 1.0 mm (0.039 in.)
Measure the worn depth of the chain tensioner slipper.
- Maximum depth:
- 1.0 mm (0.039 in.)
Measure the worn depth of the No. 1 chain vibration damper.
- Maximum depth:
- 1.0 mm (0.039 in.)
Measure the worn depth of the No. 2 chain vibration damper.
- Maximum depth:
- 1.0 mm (0.039 in.)
Using a gasket scraper, remove all the gasket material from the cylinder block contact surface.
- NOTICE:
- Be careful not to scratch the cylinder block contact surface.
Using a wire brush, remove all the carbon from the combustion chambers.
- NOTICE:
- Be careful not to scratch the combustion chambers.
Using a valve guide bushing brush and solvent, clean all the valve guide bushes.
Using a soft brush and solvent, thoroughly clean the cylinder head.
Inspect warpage.
Using a precision straight edge and feeler gauge, measure the warpage of the contact surfaces of the cylinder block and manifolds.
- Maximum warpage:
- 0.10 mm (0.0039 in.)
Inspect cranks.
Using a dye penetrant, check the combustion chamber, intake ports, exhaust ports and cylinder block surface for cracks.
If cracked, replace the cylinder head.
Using a gasket scraper, chip off any carbon from the valve head.
Using a wire brush, thoroughly clean the valve.
Inspect the valve stem diameter.
Using a micrometer, measure the diameter of the valve stem.
- Valve stem diameter:
Intake Exhaust 5.470 to 5.485 mm
(0.2154 to 0.2159 in.)5.465 to 5.480 mm
(0.2152 to 0.2158 in.)
Inspect the valve face angle.
Grind the valve enough to remove pits and carbon.
Check that the valve is ground to the correct valve face angle.
- Valve face angle:
- 44.5°
Inspect the valve head margin thickness.
Using vernier calipers, check the valve head margin thickness.
- Standard margin thickness:
- 1.0 mm (0.039 in.)
- Minimum margin thickness:
- 0.5 mm (0.020 in.)
Inspect the overall length.
Using vernier calipers, check the overall length.
- Standard overall length:
Intake Exhaust 106.95 mm (4.2106 in.) 105.80 mm (4.1654 in.)
- Minimum overall length:
Intake Exhaust 106.40 mm (4.1890 in.) 105.30 mm (4.1457 in.)
Inspect the valve stem tip.
Check the surface of the valve stem tip for wear.
- NOTICE:
- Do not grind off more than the minimum length.
Using a 45° carbide cutter, resurface the valve seats.
Clean the valve seats.
Apply a light coat of prussian blue (or white lead) to the valve face.
Lightly press the valve against the valve seat.
- NOTICE:
- Do not rotate the valve.
Check the valve face and seat according to the following procedure.
If prussian blue appears around the entire face, the valve is centered.
If not, replace the valve.If prussian blue appears around the entire valve seat, the guide and face are centered.
If not, resurface the valve seat.Check that the seat contacts the middle of the valve face with the width below.
- Standard width:
- 1.0 to 1.4 mm (0.039 to 0.055 in.)
- NOTICE:
- Take off a cutter gradually to make the intake valve seat smooth.
If the seating is too high to the valve face, use 30° and 45° cutters to correct the seat.
Intake side:
If the seating is too low to the valve face, use 60° and 45° cutters to correct the seat.
Exhaust side:
If the seating is too low to the valve face, use 75° and 45° cutters to correct the seat.
Handrub the valve and valve seat with an abrasive compound.
After handrubbing, clean the valve and valve seat.
Inspect squareness.
Using a steel square, measure the squareness of the inner compression spring.
- Maximum deviation:
- 2.0 mm (0.079 in.)
Inspect free length.
Using vernier calipers, measure the free length of the inner compression spring.
- Free length:
- 47.80 mm (1.8819 in.)
Inspect tension.
Using a spring tester, measure the tension of the inner compression spring at the specified installed length.
- Installed tension:
- 186.2 to 205.8 N (19.0 to 21.0 kgf, 41.9 to 46.3 lbf) at 33.3 mm (1.311 in.)
Using a caliper gauge, measure the inside diameter of the valve guide bush.
- Inside diameter:
- 5.51 to 5.53 mm (0.2169 to 0.2177 in.)
Subtract the valve stem diameter measurement (Step 8) from the valve guide bush inside diameter measurement.
- Standard overall length:
Intake Exhaust 0.025 to 0.060 mm
(0.0010 to 0.0024 in.)0.030 to 0.065 mm
(0.0012 to 0.0026 in.)
- Minimum overall length:
Intake Exhaust 0.08 mm (0.0031 in.) 0.10 mm (0.0039 in.)
Gradually heat the cylinder head to 80 to 100°C (176 to 212°F).
Place the cylinder head on a wooden block.
Using SST, tap out the valve guide bush.
- SST
- 09201-10000
09201-01055
09950-70010 (09951-07100)
Using a caliper gauge, measure the bush bore diameter of the cylinder head.
- Bush bore diameter:
- 10.295 to 10.315 mm (0.4053 to 0.4061 in.)
Valve guide bush diameter STD 10.333 to 10.344 mm (0.4068 to 0.4072 in.) O/S 0.05 10.383 to 10.394 mm (0.4088 to 0.4092 in.)
Gradually heat the cylinder head to 80 to 100°C (176 to 212°F).
Place the cylinder head on a wooden block.
Using SST, tap in a new valve guide bush to the specified protrusion height.
- SST
- 09201-10000
09201-01055
09950-70010 (09951-07100)
- Protrusion height:
- 9.3 to 9.7 mm (0.366 to 0.382 in.)
Using a sharp 5.5 mm reamer, ream the valve guide bush to obtain the standard specified clearance between the valve guide bush and valve stem.
- Standard overall length:
Intake Exhaust 0.025 to 0.060 mm
(0.0010 to 0.0024 in.)0.030 to 0.065 mm
(0.0012 to 0.0026 in.)
Using a micrometer, measure the valve lifter diameter.
- Valve lifter diameter:
- 30.966 to 30.976 mm (1.2191 to 1.2195 in.)
Using a caliper gauge, measure the lifter bore diameter of the cylinder head.
- Lifter bore diameter:
- 31.009 to 31.025 mm (1.2208 to 1.2215 in.)
Subtract the valve lifter diameter measurement (Step 16) from the lifter bore diameter measurement.
- Standard oil clearance:
- 0.033 to 0.059 mm (0.0013 to 0.0023 in.)
- Maximum oil clearance:
- 0.08 mm (0.0031 in.)
If necessary, replace the cylinder head.
Clean the camshaft bearing caps, camshaft bearings and camshaft journals.
Install the camshaft bearing (Click here).
Place the camshaft on the cylinder head.
Lay a strip of Plastigage across each of the camshaft journals.
Install the camshaft bearing caps (Click here).
- NOTICE:
- Do not turn the camshafts.
Remove the camshaft bearing caps (Click here).
Measure the Plastigage at its widest point.
- Standard oil clearance (Cylinder head RH):
No. 1 (Intake) No. 1 (Exhaust) Others 0.008 to 0.038 mm
(0.0003 to 0.0015 in.)0.040 to 0.079 mm
(0.0016 to 0.0031 in.)0.025 to 0.062 mm
(0.0010 to 0.0024 in.)
- Standard oil clearance (Cylinder head LH):
No. 1 Others 0.040 to 0.079 mm
(0.0016 to 0.0031 in.)0.025 to 0.062 mm
(0.0010 to 0.0024 in.)
- Maximum oil clearance (Cylinder head RH):
No. 1 (Intake) Others 0.07 mm (0.0028 in.) 0.10 mm (0.0039 in.)
- Maximum oil clearance (Cylinder head LH):
- 0.10 mm (0.0039 in.)
If necessary, replace the camshaft bearing caps and cylinder head together.Reference: Cylinder head journal bore diameter 40.009 to 40.017 mm
(1.5752 to 1.5755 in.)Camshaft bearing center wall thickness (Mark "2") 2.004 to 2.008 mm
(0.0789 to 0.0791 in.)Camshaft journal diameter 35.971 to 35.985 mm
(1.4165 to 1.4167 in.)
Remove the Plastigage completely.
Remove the camshafts.
Remove the camshaft bearing.
Install the camshafts (Click here).
Using a dial indicator, measure the thrust clearance while moving the camshaft back and forth.
- Standard thrust clearance:
- 0.04 to 0.09 mm (0.0016 to 0.0035 in.)
- Maximum thrust clearance:
- 0.11 mm (0.0043 in.)
If necessary, replace the camshaft bearing caps and cylinder head as a set.
Using a precision straight edge and feeler gauge, measure the warpage of the contact surface of the cylinder head gasket.
- Maximum warpage:
- 0.05 mm (0.0020 in.)
Using a cylinder gauge, measure the cylinder bore diameter at positions A and B in the thrust and axial directions.
- Standard diameter:
- 94.000 to 94.012 mm (3.7008 to 3.7013 in.)
- Maximum diameter:
- 94.132 mm (3.7060 in.)
Using a micrometer, measure the piston diameter at right angles to the piston pin center line, 27.7 mm (1.091 in.) from the piston head.
- Piston diameter:
- 93.910 to 93.920 mm (3.6972 to 3.6976 in.)
Subtract the piston diameter measurement from the cylinder bore diameter measurement.
- Standard oil clearance:
- 0.080 to 0.102 mm (0.0031 to 0.0040 in.)
- Maximum oil clearance:
- 0.13 mm (0.0051 in.)
Using a rod aligner and feeler gauge, check the connecting rod alignment.
Check for misalignment.
- Maximum misalignment:
- 0.05 mm (0.0020 in.) per 100 mm (3.94 in.)
Check twist.
- Maximum twist:
- 0.15 mm (0.0059 in.) per 100 mm (3.94 in.)
Using a caliper gauge, measure the inside diameter of the piston pin hole.
- Piston pin hole inside diameter:
- 22.001 to 22.010 mm (0.8662 to 0.8665 in.)
- HINT:
Piston pin hole inside diameter Mark mm (in.) A 22.001 to 22.004 (0.8662 to 0.8663) B 22.005 to 22.007 (0.8663 to 0.8664) C 22.008 to 22.010 (0.8665 to 0.8665)
Using a micrometer, measure the piston pin diameter.
- Piston pin diameter:
- 21.997 to 22.006 mm (0.8660 to 0.8664 in.)
- HINT:
Piston pin diameter Mark mm (in.) A 21.997 to 22.000 (0.8660 to 0.8661) B 22.001 to 22.003 (0.8661 to 0.8663) C 22.004 to 22.006 (0.8663 to 0.8664)
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.)
- HINT:
Bushing inside diameter Mark mm (in.) A 22.005 to 22.008 (0.8663 to 0.8665) B 22.009 to 22.011 (0.8665 to 0.8666) C 22.012 to 22.014 (0.8666 to 0.8667)
Subtract the piston pin diameter measurement from the piston pin hole diameter measurement.
- Standard oil clearance:
- 0.001 to 0.007 mm (0.00004 to 0.00028 in.)
- Maximum oil clearance:
- 0.040 mm (0.0016 in.)
If the oil clearance is greater than the maximum, replace the bushing. If necessary, replace the piston and piston pin together.
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:
- 0.050 mm (0.0020 in.)
If the oil clearance is greater than the maximum, replace the bushing. If necessary, replace the connecting rod and piston pin together.
Using SST and a press, press out the bushing.
- SST
- 09222-30010
Align the oil holes of a new bushing and the connecting rod.
Using SST and a press, press in the bushing.
- SST
- 09222-30010
Using a pin hole grinder, hone the bushing to obtain the standard specified clearance between the bushing and piston pin.
- Standard oil clearance:
- 0.005 to 0.011 mm (0.0002 to 0.0004 in.)
- HINT:
- Check that the piston pin fits at a normal room temperature. Coat the piston pin with engine oil, and push it into the connecting rod with a thumb.
Using a feeler gauge, measure the clearance between the new piston ring and the wall of the ring groove.
- Ring groove clearance:
- No. 1:
- 0.02 to 0.07 mm (0.0008 to 0.0028 in.)
- No. 2:
- 0.02 to 0.06 mm (0.0008 to 0.0024 in.)
- Oil:
- 0.07 to 0.15 mm (0.0028 to 0.0060 in.)
Using a piston, push the piston ring a little beyond the bottom of the ring travel, 110mm (4.33 in.) from the top of the cylinder block.
Using a feeler gauge, measure the end gap.
- Standard end gap:
- No. 1:
- 0.30 to 0.40 mm (0.0118 to 0.0157 in.)
- No. 2:
- 0.40 to 0.50 mm (0.0157 to 0.0197 in.)
- Oil (Side rail):
- 0.10 to 0.40 mm (0.0039 to 0.0157 in.)
- Maximum end gap:
- No. 1:
- 1.0 mm (0.039 in.)
- No. 2:
- 1.1 mm (0.043 in.)
- Oil (Side rail):
- 1.0 mm (0.039 in.)
Using vernier calipers, measure the tension portion diameter of the bolt.
- Standard diameter:
- 7.2 to 7.3 mm (0.283 to 0.287 in.)
- Minimum diameter:
- 7.0 mm (0.276 in.)
Using vernier calipers, measure the tension portion diameter of the bolt.
- Standard diameter:
- 10.0 to 10.2 mm (0.393 to 0.402 in.)
Using a dial indicator and V-blocks, measure the runout as shown in the illustration.
- Maximum circle runout:
- 0.06 mm (0.0024 in.)
Using a micrometer, measure the diameter of each main journal.
- Diameter:
- 71.988 to 72.000 mm (2.8342 to 2.8346 in.)
Check each main journal for taper and out-of-round as shown.
- Maximum taper and out-of-round:
- 0.02 mm (0.0008 in.)
Using a micrometer, measure the diameter of each crank pin.
- Diameter:
- 55.992 to 56.000 mm (2.2044 to 2.2047 in.)
Check each crank pin for taper and out-of-round as shown.
- Maximum taper and out-of-round:
- 0.02 mm (0.0008 in.)
- HINT:
- Main bearings come in widths of 19.0 mm (0.748 in.) and 22.4 mm (0.882 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 cap. Install the 19.0 mm (0.748 in.) bearings in the No. 2 and No. 3 positions.
Clean each main journal and bearing.
Align the bearing claw with the claw groove of the cylinder block, and push in the 4 upper bearings.
- NOTICE:
- Do not apply engine oil to the bearing or its contact surface.
Align the bearing claw with the claw groove of the main bearing cap, and push in the 4 bottom bearings.
- NOTICE:
- Do not apply engine oil to the bearing or its contact surface.
- HINT:
- A number marked on each main bearing cap indicates the installation position.
Place the crankshaft on the cylinder block.
Lay a strip of Plastigage across each journal.
Examine the front marks and numbers and install the bearing caps on the cylinder block.
Apply a light coat of engine oil to the threads of the bearing cap bolts.
Temporarily install the 8 main bearing cap bolts to the inside positions.
Install the main bearing caps. Tighten the 2 bolts for each bearing cap until the clearance between the bearing cap and the cylinder block becomes less than 6 mm (0.23 in.).
Using a plastic-faced hammer, lightly tap the bearing cap to ensure a proper fit.
Apply a light coat of engine oil to the threads of the main bearing cap bolts.
Install the 16 main bearing cap bolts. Using several steps, tighten the bolts uniformly in the sequence as shown in the illustration.
- Torque:
- 61 N*m{622 kgf*cm, 45 ft.*lbf}
Mark the front side of the bearing cap bolts with paint.
Retighten the bearing cap bolts 90° in the sequence as shown.
Check that the painted mark is now at a 90° angle to the front.
- NOTICE:
- Do not turn the crankshaft.
Install the 8 main bearing cap bolts. Using several steps, tighten the bolts uniformly in the sequence as shown in the illustration.
- Torque:
- 26 N*m{262 kgf*cm, 19 ft.*lbf}
Remove the main bearing caps.
Measure the Plastigage at its widest point.
- Standard oil clearance:
- 0.018 to 0.030 mm (0.0007 to 0.0012 in.)
- Maximum clearance:
- 0.046 mm (0.0018 in.)
- NOTICE:
- Completely remove the Plastigage.
If replacing a bearing, replace it with one that has the same number. If the number of the bearing cannot be determined, select the correct bearing by adding together the numbers imprinted on the cylinder block and crankshaft, then refer to the table below for appropriate bearing number. There are 5 sizes of standard bearings, marked "1", "2", "3", "4" and "5" accordingly.
Journal bearings Cylinder block (A) + Crankshaft Use Bearing 0 - 5 "1" 6 - 11 "2" 12 - 17 "3" 18 - 23 "4" 24 - 28 "5" - HINT:
- EXAMPLE
- Cylinder block "11" (A) + Crankshaft "06" (B) = Total number 17 (Use bearing "3")
Item Mark mm (in.) Cylinder block main journal bore diameter (A) "00" 77.000 (3.0315) "01" 77.001 (3.0315) "02" 77.002 (3.0316) "03" 77.003 (3.0316) "04" 77.004 (3.0317) "05" 77.005 (3.0317) "06" 77.006 (3.0317) "07" 77.007 (3.0318) "08" 77.008 (3.0318) "09" 77.009 (3.0319) "10" 77.010 (3.0319) "11" 77.011 (3.0319) "12" 77.012 (3.0320) "13" 77.013 (3.0320) "14" 77.014 (3.0320) "15" 77.015 (3.0321) "16" 77.016 (3.0321) Crankshaft main journal diameter (B) "00" 71.999 to 72.000 (2.8346 to 2.8346) "01" 71.998 to 71.999 (2.8346 to 2.8346) "02" 71.997 to 71.998 (2.8345 to 2.8346) "03" 71.996 to 71.997 (2.8345 to 2.8346) "04" 71.995 to 71.996 (2.8344 to 2.8345) "05" 71.994 to 71.995 (2.8344 to 2.8344) "06" 71.993 to 71.994 (2.8343 to 2.8344) "07" 71.992 to 71.993 (2.8343 to 2.8343) "08" 71.991 to 71.992 (2.8343 to 2.8343) "09" 71.990 to 71.991 (2.8343 to 2.8343) "10" 71.989 to 71.990 (2.8342 to 2.8343) "11" 71.988 to 71.989 (2.8342 to 2.8342) Standard bearing center wall thickness "1" 2.488 to 2.491 (0.0980 to 0.0981) "2" 2.491 to 2.494 (0.0981 to 0.0982) "3" 2.494 to 2.497 (0.0982 to 0.0983) "4" 2.497 to 2.500 (0.0982 to 0.0984) "5" 2.500 to 2.503 (0.0984 to 0.0985)