Lexus IS250 · Service Manual SERVICE SPECIFICATIONS

SERVICE DATA

Specifications

ENGINE 
Ignition timing
Terminals TC and CG of DLC3 connected
 8 to 12°BTDC at idle (Transmission in neutral)
Terminals TC and CG of DLC3 disconnected
 5 to 15°BTDC at idle (Transmission in neutral)
Idle speed
 650 to 750 rpm (Transmission in neutral)
Compression
 Compression pressure
 1.4 MPa (14 kgf*cm2, 199 psi)
Minimum pressure
 0.98 MPa (10 kgf*cm2, 142 psi)
Difference between each cylinder
 0.1 MPa (1.0 kgf*cm2, 15 psi) or less
ENGINE UNIT 
Cylinder head set bolt
 Standard
 10.85 to 11.00 mm (0.4272 to 0.4331 in.)
Minimum
 10.7 mm (0.421 in.)
Measuring point
 100 mm (3.94 in.)
Chain
 Elongation
 Minimum
 136.9 mm (5.390 in.)
No. 2 chain
 Elongation
 Minimum
 137.6 mm (5.417 in.)
Crankshaft timing gear or sprocket
 Diameter (w/ Chain)
 Minimum
 61.4 mm (2.417 in.)
Idle sprocket
 Diameter (w/ Chain)
 Minimum
 61.4 mm (2.417 in.)
Idle gear shaft
 Idle gear shaft diameter
 22.987 to 23.000 mm (0.9050 to 0.9055 in.)
Idle gear inside diameter
 23.020 to 23.030 mm (0.9063 to 0.9067 in.)
Oil clearance
 Standard
 0.020 to 0.043 mm (0.0008 to 0.0017 in.)
Maximum
 0.093 mm (0.0037in.)
No. 2 chain tensioner assembly
 Worn depth
 Maximum
 0.9 mm (0.035 in.)
No. 3 chain tensioner assembly
 Worn depth
 Maximum
 0.9 mm (0.035 in.)
Chain tensioner slipper
 Worn depth
 Maximum
 1.0 mm (0.039 in.)
No. 1 chain vibration damper
 Worn depth
 Maximum
 1.0 mm (0.039 in.)
No. 2 chain vibration damper
 Worn depth
 Maximum
 1.0 mm (0.039 in.)
Cylinder head sub-assembly
 Standard
 Cylinder head lower
 0.05 mm (0.0020 in.)
Intake
 0.08 mm (0.0031 in.)
Exhaust
 0.08 mm (0.0031 in.)
Warpage
 Maximum
 0.10 mm (0.0039 in.)
Intake valve
 Valve stem diameter
 5.470 to 5.485 mm (0.2154 to 0.2159 in.)
Margin thickness
 Standard
 1.0 mm (0.03937 in.)
Maximum
 0.5 mm (00.197 in.)
Overall length
 Standard
 106.15 mm (4.1791 in.)
Maximum
 105.65 mm (4.1594 in.)
Exhaust valve
 Valve stem diameter
 5.465 to 5.480 mm (0.2151 to 0.2157 in.)
Margin thickness
 Standard
 0.81 mm (0.0319 in.)
Maximum
 0.31 mm (00.122 in.)
Overall length
 Standard
 111.70 mm (4.3976 in.)
Maximum
 111.20 mm (4.3779 in.)
Inner compression spring
 Free length
 46.51 mm (1.8311 in.)
Deviation
 Maximum
 1.0 mm (0.039 in.)
Angle (reference)
 Maximum
 2°
Intake valve guide bush
 Inside diameter
 5.510 to 5.530 mm (0.2169 to 0.2177 in.)
Oil clearance
 Standard
 0.025 to 0.060 mm (0.0010 to 0.0024 in.)
Maximum
 0.08 mm (0.0031 in.)
Bush bore diameter
 Use STD
 10.285 to 10.306 (0.4049 to 0.4057 in.)
Use O/S 0.05
 10.335 to 10.356 mm (0.4069 to 0.4077 in.)
Protrusion height
 10.20 to 10.24 mm (0.4016 to 0.4031 in.)
Exhaust valve guide bush
 Inside diameter
 5.510 to 5.530 mm (0.2169 to 0.2177 in.)
Oil clearance
 Standard
 0.030 to 0.065 mm (0.0012 to 0.0026 in.)
Maximum
 0.10 mm (0.0039 in.)
Bush bore diameter
 Use STD
 10.285 to 10.306 mm (0.4049 to 0.4057 in.)
Use O/S 0.05
 10.335 to 10.356 mm (0.4069 to 0.4077 in.)
Protrusion height
 9.30 to 9.34mm (0.3661 to 0.3677 in.)
No. 1 camshaft (Intake)
 Journal diameter
 No. 1 journal
 35.946 to 35.960 mm (1.4152 to 1.4157 in.)
Other journals
 25.959 to 25.975 mm (1.0220 to 1.0226 in.)
Circuit runout
 Maximum
 0.04 mm (0.0016 in.)
Cam lobe height
 Standard
 43.940 to 44.040 mm (1.7299 to 1.7339 in.)
Maximum
 43.790 mm (1.7240 in.)
Oil clearance
 Standard No. 1 journal
 0.040 to 0.079 mm (0.0016 to 0.0031 in.)
Other journals
 0.025 to 0.062 (0.0010 to 0.0024 in.)
Maximum No. 1 journal
 0.10 mm (0.0039 in.)
Other journals
 0.09 mm (0.0035 in.)
Thrust clearance
 Standard
 0.08 to 0.13 mm (0.0031 to 0.0051 in.)
Maximum
 0.15 mm (0.006 in.)
No. 2 camshaft (Exhaust)
 Journal diameter
 No. 1 journal
 35.946 to 35.960 mm (1.4152 to 1.4157 in.)
Other journals
 25.959 to 25.975 mm (1.0220 to 1.0226 in.)
Circuit runout
 Maximum
 0.04 mm (0.0016 in.)
Cam lobe height
 Standard
 44.090 to 44.190 mm (1.7358 to 1.7398 in.)
Maximum
 43.940 mm (1.7299 in.)
Oil clearance
 Standard No. 1 journal
 0.040 to 0.079 mm (0.0016 to 0.0031 in.)
Other journals
 0.025 to 0.062 (0.0010 to 0.0024 in.)
Maximum No. 1 journal
 0.10 mm (0.0039 in.)
Other journals
 0.09 mm (0.0035 in.)
Thrust clearance
 Standard
 0.08 to 0.13 mm (0.0031 to 0.0051 in.)
Maximum
 0.15 mm (0.006 in.)
No. 3 camshaft (Intake)
 Journal diameter
 No. 1 journal
 35.946 to 35.960 mm (1.4152 to 1.4157 in.)
Other journals
 25.959 to 25.975 mm (1.0220 to 1.0226 in.)
Circuit runout
 Maximum
 0.04 mm (0.0016 in.)
Cam lobe height
 Standard
 43.940 to 44.040 mm (1.7299 to 1.7339 in.)
Maximum
 43.790 mm (1.7240 in.)
Oil clearance
 Standard No. 1 journal
 0.040 to 0.079 mm (0.0016 to 0.0031 in.)
Other journals
 0.025 to 0.062 (0.0010 to 0.0024 in.)
Maximum No. 1 journal
 0.10 mm (0.0039 in.)
Other journals
 0.09 mm (0.0035 in.)
Thrust clearance
 Standard
 0.08 to 0.13 mm (0.0031 to 0.0051 in.)
Maximum
 0.15 mm (0.006 in.)
No. 4 camshaft (Exhaust)
 Journal diameter
 No. 1 journal
 35.946 to 35.960 mm (1.4152 to 1.4157 in.)
Other journals
 25.959 to 25.975 mm (1.0220 to 1.0226 in.)
Circuit runout
 Maximum
 0.04 mm (0.0016 in.)
Cam lobe height
 Standard
 44.090 to 44.190 mm (1.7358 to 1.7398 in.)
Maximum
 43.940 mm (1.7299 in.)
Oil clearance
 Standard No. 1 journal
 0.040 to 0.079 mm (0.0016 to 0.0031 in.)
Other journals
 0.025 to 0.062 (0.0010 to 0.0024 in.)
Maximum No. 1 journal
 0.10 mm (0.0039 in.)
Other journals
 0.09 mm (0.0035 in.)
Thrust clearance
 Standard
 0.08 to 0.13 mm (0.0031 to 0.0051 in.)
Maximum
 0.15 mm (0.006 in.)
Ring pin for cylinder head sub-assembly
 Protrusion height
 2.5 to 3.8 mm (0.098 to 0.150 in.)
Straight pin for cylinder head sub-assembly
 Protrusion height
 17.5 to 19.5 mm (0.689 to 0.768 in.)
Connecting rod thrust clearance
 Standard
 0.25 to 0.40 mm (0.0098 to 0.0157 in.)
Maximum
 0.50 mm (0.020 in.)
Connecting rod oil clearance
 Standard
 0.042 to 0.068 mm (0.0017 to 0.0027 in.)
Maximum
 0.070 mm (0.0028 in.)
Connecting rod diameter
 Mark1
 51.000 to 51.006 mm (2.0079 to 2.0081 in.)
Mark2
 51.007 to 51.012 mm (2.0081 to 2.0083 in.)
Mark3
 51.013 to 51.018 mm (2.0084 to 2.0086 in)
Mark4
 51.019 to 51.024 mm (2.0086 to 2.0088 in.)
Connecting rod beating center wall thickness
 Mark1
 1.484 to 1.487 mm (0.0584 to 0.0585 in.)
Mark2
 1.487 to 1.490 mm (0.0585 to 0.0587 in.)
Mark3
 1.490 to 1.493 mm (0.0587 to 0.0588 in)
Mark4
 1.493 to 1.496 mm (0.0588 to 0.0589 in.)
Crankshaft thrust clearance
 Standard
 0.020 to 0.220 mm (0.0008 to 0.0087 in.)
Maximum
 0.30 mm (0.0118 in.)
Thrust washer thickness
 2.43 to 2.48 mm (0.0957 to 0.0976 in.)
Cylinder block warpage
 Maximum
 0.07 mm (0.0028 in.)
Cylinder bore diameter
 Standard
 83.000 to 83.012 mm (3.2677 to 3.2682 in.)
Maximum
 83.200 mm (3.2756 in.)
Piston diameter
 Distance
 14.3 mm (0.563 in.)
Standard
 82.976 to 82.986 mm (3.2668 to 3.2672 in.)
Maximum
 0.13 mm (0.0051 in.)
Piston oil clearance
 Standard
 0.014 to 0.036 mm (0.0006 to 0.0014 in.)
Maximum
 0.06 mm (0.0023 in.)
Connecting rod out-of alignment
 Maximum
 0.05 mm (0.0020 in.) per 100 mm (3.94 in.)
Connecting rod twist
 Maximum
 0.15 mm (0.0059 in.) per 100 mm (3.94 in.)
Piston pin hole inside diameter
 Mark A
 21.998 to 22.001 mm (0.8661 to 0.8662 in.)
Mark B
 22.001 to 22.004 mm (0.8662 to 0.8663 in.)
Mark C
 22.004 to 22.007 mm (0.8663 to 0.8664 in.)
Piston pin diameter
 Mark A
 21.997 to 22.000 mm (0.8660 to 0.8661 in.)
Mark B
 22.000 to 22.003 mm (0.8661 to 0.8663 in.)
Mark C
 22.003 to 22.006 mm (0.8663 to 0.8664 in.)
Piston pin oil clearance
 Standard
 -0.002 to 0.004 mm (0.00007 to 0.0001 in.)
Maximum
 0.015 mm (0.0006 in.)
Connecting rod bushing inside diameter
 Mark A
 22.005 to 22.008 mm (0.8663 to 0.8665 in.)
Mark B
 22.009 to 22.011 mm (0.8665 to 0.8666 in.)
Mark C
 22.011 to 22.014 mm (0.8666 to 0.8667 in.)
Connecting rod bushing oil clearance
 Standard
 0.005 to 0.011 mm (0.0002 to 0.0004 in.)
Maximum
 0.03 mm (0.0012 in.)
Piston ring groove clearance
 No. 1
 0.020 to 0.070 mm (0.0008 to 0.0028 in.)
No. 2
 0.030 to 0.070 mm (0.0012 to 0.0028 in.)
Oil
 0.020 to 0.065 mm (0.0008 to 0.0026 in.)
Piston ring end gap
 Standard No. 1
 0.22 to 0.32 mm (0.0087 to 0.0126 in.)
No. 2
 0.60 to 0.70 mm (0.0236 to 0.0276 in.)
Oil (Side rail)
 0.10 to 0.35 mm (0.0039 to 0.0138 in.)
Maximum No. 1
 0.50 mm (0.0197 in.)
No. 2
 0.80 mm (0.0315 in.)
Oil (Side rail)
 0.65 mm (0.0256 in.)
Connecting rod bolt diameter
 Standard
 7.2 to 7.3 mm (0.283 to 0.287 in.)
Minimum
 7.0 mm (0.276 in.)
Crankshaft bearing cap set bolt diameter
 Standard
 10.8 to 11.0 mm (0.4252 to 0.4331 in.)
Minimum
 10.7 mm (0.4213 in.)
Measuring point
 47 mm (1.85 in.)
Crankshaft circle runout
 Maximum
 0.06 mm (0.0024 in.)
Main journal diameter
 60.988 to 61.000 mm (2.4011 to 2.4016 in.)
Main journal taper and out-of -round
 Maximum
 0.02 mm (0.0008 in.)
Crankshaft pin diameter
 47.992 to 48.000 mm (1.8894 to 1.8898 in.)
Crank pin taper and out-of-round
 Maximum
 0.02 mm (0.0008 in.)
Crankshaft oil clearance
 Standard
 0.026 to 0.047 mm (0.0010 to 0.0019 in.)
Minimum
 0.050 mm (0.0020 in.)
Standard upper bearing center wall thickness (No. 1 and No. 4 journal)
 Mark 1
 2.497 to 2.500 mm (0.0983 to 0.0984 in.)
Mark 2
 2.500 to 2.503 mm (0.0984 to 0.0985 in.)
Mark 3
 2.503 to 2.506 mm (0.0985 to 0.0987 in.)
Mark 4
 2.506 to 2.509 mm (0.0987 to 0.0988 in.)
Mark 5
 2.509 to 2.512 mm (0.0988 to 0.0989 in.)
Standard lower bearing center wall thickness (No. 1 and No. 4 journal)
 Mark 1
 2.481 to 2.484 mm (0.0977 to 0.0978 in.)
Mark 2
 2.484 to 2.487 mm (0.0978 to 0.0979 in.)
Mark 3
 2.487 to 2.490 mm (0.0979 to 0.0980 in.)
Mark 4
 2.490 to 2.493 mm (0.0980 to 0.0981 in.)
Mark 5
 2.493 to 2.496 mm (0.0981 to 0.0983 in.)
Standard upper bearing center wall thickness (No. 2 and No. 3 journal)
 Mark 1
 2.481 to 2.484 mm (0.0977 to 0.0978 in.)
Mark 2
 2.484 to 2.487 mm (0.0978 to 0.0979 in.)
Mark 3
 2.487 to 2.490 mm (0.0979 to 0.0980 in.)
Mark 4
 2.490 to 2.493 mm (0.0980 to 0.0981 in.)
Mark 5
 2.493 to 2.496 mm (0.0981 to 0.0983 in.)
Standard lower bearing center wall thickness (No. 2 and No. 3 journal)
 Mark 1
 2.497 to 2.500 mm (0.0983 to 0.0984 in.)
Mark 2
 2.500 to 2.503 mm (0.0984 to 0.0985 in.)
Mark 3
 2.503 to 2.506 mm (0.0985 to 0.0987 in.)
Mark 4
 2.506 to 2.509 mm (0.0987 to 0.0988 in.)
Mark 5
 2.509 to 2.512 mm (0.0988 to 0.0989 in.)
Straight pin for cylinder block sub-assembly
 Protrusion height
 Pin A
 23 mm (0.906 in.)
Pin B
 6 mm (0.236 in.)
Pin C
 11 mm (0.433 in.)
Pin D
 9 mm (0.354 in.)
Tight plug for cylinder block
 Depth
 0.2 to 1.2 mm (0.007 to 0.047 in.)
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