2006 ACURA CSX Service Repair Manual

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ACURA CSX 2006 Service Repair Manual µµµµ µ •••
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Engine Electrical
Engine Assembly
Item Measurement QualificationStandard or New Service Li

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Cylinder Head
Item Measurement QualificationStandard or New Service Limit
2-3
HeadWarpage 0.05 mm (0.002 in.)
Height 103.95 104.05 mm (4.093 4.096 in.)
Camshaft End play 0.05 0.20 mm (0.002 0.008 in.) 0.4 mm (0.02 in.)
Camshaft-to-holder oil clearance No. 1 journal 0.030 0.069 mm (0.001 0.003 in.) 0.15 mm (0.006 in.) No.2,3,4,5
journals0.060 0.099 mm (0.002 0.004 in.) 0.15 mm (0.006 in.)
Total runout 0.03 mm (0.001 in.) max.0.04 mm (0.002 in.)
Cam lobe height (K20Z2) Intake (primary) 34.263 mm (1.3489 in.)
Intake
(secondary) 29.638 mm (1.1668 in.)
Exhaust 34.092 mm (1.3422 in.)
Cam lobe height (K20Z3) Intake (primary) 32.791 mm (1.2910 in.)
Intake (mid) 35.534 mm (1.3990 in.)
Intake
(secondary) 32.678 mm (1.2865 in.)
Exhaust
(primary) 32.772 mm (1.2902 in.)
Exhaust (mid) 34.768 mm (1.3688 in.)
Exhaust
(secondary) 32.661 mm (1.2859 in.)
Valve Clearance (cold)
(K20Z2) Intake
0.21 0.25 mm (0.008 0.010 in.)
Exhaust 0.28 0.32 mm (0.011 0.013 in.)
Clearance (cold)
(K20Z3) Intake
0.21 0.25 mm (0.008 0.010 in.)
Exhaust 0.25 0.29 mm (0.010 0.011 in.)
Stem O.D. Intake5.475 5.485 mm (0.2156 0.2159 in.) 5.445 mm (0.214 in.)
Exhaust 5.450 5.460 mm (0.2146 0.2150 in.) 5.420 mm (0.213 in.)
Stem-to-guide clearance Intake0.030 0.055 mm (0.0012 0.0022 in.) 0.08 mm (0.003 in.)
Exhaust 0.055 0.080 mm (0.0022 0.0031 in.) 0.11 mm (0.004 in.)
Valve seat Width Intake1.25 1.55 mm (0.049 0.061 in.) 2.00 mm (0.079 in.)
Exhaust 1.25 1.55 mm (0.049 0.061 in.) 2.00 mm (0.079 in.)
Stem installed height Intake44.0 44.5 mm (1.73 1.75 in.) 44.7 mm (1.76 in.)
Exhaust 44.1 44.6 mm (1.74 1.76 in.) 44.8 mm (1.76 in.)
Valve spring Free length IntakeNIPPON HATSUJO:
47.57 mm (1.8728 in.)
CHUO HATSUJO:
47.58 mm (1.8732 in.)
Exhaust NIPPON HATSUJO:
49.64 mm (1.954 in.)
CHUO HATSUJO:
49.63 mm (1.954 in.)
Valve guide I.D. Intake5.515 5.530 mm (0.2171 0.2177 in.) 5.55 mm (0.219 in.)
Exhaust 5.515 5.530 mm (0.2171 0.2177 in.) 5.55 mm (0.219 in.)
Installed height Intake15.2 16.2 mm (0.598 0.638 in.)
Exhaust 15.5 16.5 mm (0.610 0.650 in.)
Rocker arm Arm-to-shaft clearance (K20Z2) Intake 0.025 0.052 mm (0.0010 0.0020 in.) 0.08 mm (0.003 in.)
Exhaust 0.018 0.056 mm (0.0007 0.0022 in.) 0.08 mm (0.003 in.)
Arm-to-shaft clearance (K20Z3) Intake 0.025 0.052 mm (0.0010 0.0020 in.) 0.08 mm (0.003 in.)
Exhaust 0.025 0.052 mm (0.0010 0.0020 in.) 0.08 mm (0.003 in.)
08/08/21 14:07:14 61SNR030_020_0003
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Engine Block
Item Measurement QualificationStandard or New Service Limit
2-4Standards and Service Limits
Block
Warpage of deck 0.07 mm (0.003 in.) max.0.10 mm (0.004 in.)
Bore diameter A or l86.010 86.020 mm (3.3862 3.3866 in.) 86.070 mm (3.3886 in.)
B or II 86.000 86.010 mm (3.3858 3.3862 in.) 86.070 mm (3.3886 in.)
Bore taper 0.05 mm (0.002 in.)
Reboring limit 0.25 mm (0.01 in.)
Piston Skirt O.D. at 11 mm (0.4 in.) from
bottom of skirt No letter or A 85.980 85.990 mm (3.3850 3.3854 in.) 85.930 mm (3.3831 in.)
Letter B
85.970 85.980 mm (3.3846 3.3850 in.) 85.920 mm (3.3827 in.)
Clearance in cylinder 0.020 0.040 mm (0.0008 0.0016 in.) 0.05 mm (0.002 in.)
Piston ring Ring-to-groove clearance (K20Z2) Top 0.035 0.060 mm (0.0014 0.0024 in.) 0.13 mm (0.005 in.)
Second 0.030 0.055 mm (0.0012 0.0022 in.) 0.13 mm (0.005 in.)
Ring-to-groove clearance (K20Z3) Top 0.045 0.070 mm (0.0018 0.0028 in.) 0.13 mm (0.005 in.)
Second 0.040 0.065 mm (0.0016 0.0026 in.) 0.13 mm (0.005 in.)
Ring end gap (K20Z2) Top0.20 0.35 mm (0.008 0.014 in.) 0.60 mm (0.024 in.)
Second 0.40 0.55 mm (0.016 0.022 in.) 0.70 mm (0.028 in.)
Oil 0.20 0.70 mm (0.008 0.028 in.) 0.80 mm (0.031 in.)
Ring end gap (K20Z3) Top0.20 0.35 mm (0.008 0.014 in.) 0.60 mm (0.024 in.)
Second 0.50 0.65 mm (0.020 0.026 in.) 0.75 mm (0.030 in.)
Oil 0.20 0.70 mm (0.008 0.028 in.) 0.80 mm (0.031 in.)
Piston pin O.D. 21.961 21.965 mm (0.8646 0.8648 in.) 21.953 mm (0.8643 in.)
Pin-to-piston clearance 0.005 to 0.002 mm
( 0.00020 to 0.00008 in.) 0.005 mm (0.0002 in.)
Connecting rod Pin-to-rod clearance 0.005 0.015 mm (0.0002 0.0006 in.) 0.02 mm (0.0008 in.)
Small-end bore diameter 21.970 21.976 mm (0.8650 0.8652 in.)
Large-end bore diameter (K20Z2) 48.0 mm (1.89 in.)
Large-end bore diameter (K20Z3) 51.0 mm (2.01 in.)
End play 0.15 0.30 mm (0.006 0.012 in.) 0.40 mm (0.016 in.)
Crankshaft Main journal diameter No. 1, 2, 4, 5
journals 54.984 55.008 mm (2.1648 2.1657 in.)
No. 3 journal 54.976 55.000 mm (2.1644 2.1654 in.)
Rod journal diameter (K20Z2) 44.976 45.000 mm (1.7707 1.7717 in.)
Rod journal diameter (K20Z3) 44.976 45.000 mm (1.7707 1.7717 in.)
Rod/main journal taper 0.005 mm (0.0002 in.) max.0.010 mm (0.0004 in.)
Rod/main journal out-of-round 0.005 mm (0.0002 in.) max.0.010 mm (0.0004 in.)
End play 0.10 0.35 mm (0.004 0.014 in.) 0.45 mm (0.018 in.)
Runout 0.03 mm (0.0012 in.) max.0.04 mm (0.0016 in.)
Crankshaft
bearing Mainbearing-to-journaloilclearance No.1,2,4,5
journals0.017 0.041 mm (0.0007 0.0016 in.) 0.050 mm (0.0020 in.)
No. 3 journal 0.025 0.049 mm (0.0010 0.0019 in.) 0.055 mm (0.0022 in.)
Connecting rod bearing-to-journal oil
clearance (K20Z2) 0.020 0.050 mm (0.0008 0.0020 in.) 0.060 mm (0.0024 in.)
Connecting rod bearing-to-journal oil
clearance (K20Z3) 0.032 0.066 mm (0.0013 0.0026 in.) 0.077 mm (0.0030 in.)
08/08/21 14:07:14 61SNR030_020_0004
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ACURA CSX 2006 Service Repair Manual µµ
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Engine Lubrication
Item Measurement QualificationStandard or New Service Limit
2-5
Engine o

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Engine Lubrication
Item Measurement QualificationStandard or New Service Limit
2-5
Engine oil Capacity (K20Z2) Engine overhaul 5.3 L (5.6 US qt)
Oil change
including filter 4.2L(4.4USqt)
Oil change
without filter 4.0L(4.2USqt)
Capacity (K20Z3) Engine overhaul 5.5 L (5.8 US qt)
Oil change
including filter 4.4L(4.6USqt)
Oil change
without filter 4.2L(4.4USqt)
Oil pump Inner-to-outer rotor clearance 0.06 0.16 mm (0.002 0.006 in.) 0.20 mm (0.008 in.)
Pump housing-to-outer rotor clearance 0.15 0.21 mm (0.006 0.008 in.) 0.23 mm (0.009 in.)
Pump housing-to-rotor axial clearance 0.035 0.070 mm (0.0014 0.0028 in.) 0.12 mm (0.005 in.)
Balancer shafts, journal diameter No. 1 journal, front shaft19.938 19.950 mm (0.7850 0.7854 in.) 19.92 mm (0.784 in.)
No. 1 journal,
rear shaft 23.938 23.950 mm (0.9424 0.9429 in.) 23.92 mm (0.942 in.)
No. 2 journal,
front and rear
shaft 32.949 32.961 mm (1.2972 1.2977 in.) 32.93 mm (1.296 in.)
Balancer shafts, journal taper 0.005 mm (0.0002 in.) max.
Balancer shafts, end play Front0.063 0.108 mm (0.0025 0.0043 in.) 0.14 mm (0.0055 in.)
Rear 0.063 0.108 mm (0.0025 0.0043 in.) 0.14 mm (0.0055 in.)
Balancer shafts, shaft-to-bearing
clearance No. 1 journal,
front shaft0.050 0.082 mm (0.0020 0.0032 in.) 0.10 mm (0.004 in.)
No. 1 journal,
rear shaft 0.050 0.082 mm (0.0020 0.0032 in.) 0.10 mm (0.004 in.)
No. 2 journal,
front and rear
shaft 0.060 0.120 mm (0.0024 0.0047 in.) 0.15 mm (0.006 in.)
Balancer shaft bearings, I.D. No. 1 journal,
front shaft 20.000 20.020 mm (0.7874 0.7882 in.) 20.03 mm (0.789 in.)
No. 1 journal,
rear shaft 24.000 24.020 mm (0.9449 0.9457 in.) 24.03 mm (0.946 in.)
No. 2 journal,
front and rear
shaft 33.021 33.069 mm (1.3000 1.3019 in.) 33.09 mm (1.303 in.)
Relief valve, oil pressure with oil
temperature at 80 °C (176 °F) At idle
70 kPa (0.7 kgf/cm , 10 psi) min.
At 3,000 rpm 300 kPa (3.1 kgf/cm , 44 psi) min.
2
2
08/08/21 14:07:14 61SNR030_020_0005
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Page 21 of 2893

ACURA CSX 2006 Service Repair Manual µµ µ
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Cooling System
ItemMeasurement Qualification Standard or New
2-6Standards and Service Limits
Radiator
Coolant capacities (including engine,
heater, hoses, and reservoir)
Use Honda Lo

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Fuel and Emissions
Clutch
Item Measurement Qualification Standard or New
Item Measurement QualificationSt

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(#'#)
Manual Transmission and M/T Differential (5-speed)
Item Measurement QualificationStandard or New Service Limit
2-8Standards and Service Limits
A
B
B
Manual
transmission
fluid
Capacity
Use Acura MTF
Fluid change 1.5 L (1.6 US qt)
Overhaul 1.7 L (1.8 US qt)
Mainshaft End play 0.11 0.17 mm (0.004 0.007 in.) Adjust Diameter of ball bearing contact area
(transmission housing side) 27.987 28.000 mm (1.1018 1.1024 in.) 27.93 mm (1.100 in.)
Diameter of 4th/5th gear distance
collar contact area 31.984 32.000 mm (1.2592 1.2598 in.) 31.93 mm (1.257 in.)
Diameter of needle bearing contact
area 38.984 39.000 mm (1.5348 1.5354 in.) 38.93 mm (1.533 in.)
Diameter of ball bearing contact area
(clutch housing side) 27.977 27.990 mm (1.1015 1.1020 in.) 27.92 mm (1.099 in.)
Diameter of bushing contact area 20.80 20.85 mm (0.819 0.821 in.) 20.75 mm (0.817 in.)
Runout 0.02 mm (0.001 in.) max. 0.05 mm (0.002 in.)
Mainshaft 3rd,
4th, and 5th gear I.D. 44.009 44.025 mm (1.7326 1.7333 in.) 44.08 mm (1.735 in.)
End play 0.06 0.16 mm (0.002 0.006 in.) 0.25 mm (0.010 in.)
Thickness 23.92 23.97 mm (0.942 0.944 in.) 23.80 mm (0.937 in.)
Mainshaft 4th/
5th gear distance
collar I.D. 32.00 32.01 mm (1.2598 1.2602 in.) 32.02 mm (1.261 in.)
O.D. 38.989 39.000 mm (1.5350 1.5354 in.) 38.94 mm (1.533 in.)
Length A 51.95 52.05 mm (2.045 2.049 in.)
B 24.03 24.08 mm (0.946 0.948 in.)
MBS distance
collar I.D. 28.00 28.10 mm (1.102 1.106 in.)
Length 23.95 24.05 mm (0.943 0.947 in.)
Countershaft Diameter of ball bearing contact area (transmission housing side) 30.020 30.033 mm (1.1819 1.1824 in.) 29.97 mm (1.180 in.)
Diameter of 1st gear distance collar
contact area 39.937 39.950 mm (1.5723 1.5728 in.) 39.88 mm (1.570 in.)
Diameter of needle bearing contact
area (clutch housing side) 40.000 40.015 mm (1.5748 1.5754 in.) 39.95 mm (1.573 in.)
Runout 0.02 mm (0.001 in.) max. 0.05 mm (0.002 in.)
35 mm shim-to-bearing inner race
clearance 0.04 0.10 mm (0.0016 0.0039 in.) Adjust
Countershaft 1st
and 2nd gear I.D. 52.010 52.029 mm (2.0476 2.0484 in.) 52.08 mm (2.050 in.)
End play 0.06 0.16 mm (0.002 0.006 in.) 0.25 mm (0.010 in.)
Thickness 1st 22.92 22.97 mm (0.902 0.904 in.) 22.87 mm (0.900 in.)
2nd 27.92 27.97 mm (1.099 1.101 in.) 27.87 mm (1.097 in.)
Countershaft 1st
and 2nd gear
distance collar I.D. 39.95 39.96 mm (1.5728 1.5732 in.) 39.97 mm (1.574 in.)
O.D. 46.989 47.000 mm (1.8500 1.8504 in.) 46.94 mm (1.848 in.)
Length 1st 23.03 23.08 mm (0.907 0.909 in.)
2nd 28.03 28.08 mm (1.104 1.106 in.)
08/08/21 14:07:15 61SNR030_020_0008
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Page 24 of 2893

ACURA CSX 2006 Service Repair Manual µµ
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Item Measurement Qualification Standard or New Service Limit
2-9
Reverse idler
gear
I.D. 20.016 20.043 mm (0.7880 0.7891 in.) 20.90 mm (0.832 in.)
Gear-to-reverse gear shaft clearance 0.036 0.084 mm (0.0014 0.0033 in.) 0.16 mm (0.006 in.)
Synchro ring Ring-to-gear clearance Ring pushed against gear0.70 1.49 mm (0.028 0.059 in.) 0.4 mm (0.016 in.)
Triple cone
synchro Outer synchro ring-to-synchro cone
clearance Ring pushed
against gear0.70 1.19 mm (0.028 0.047 in.) 0.3 mm (0.012 in.)
Synchro cone-to-gear clearance Ring pushed against gear0.50 1.04 mm (0.020 0.041 in.) 0.3 mm (0.012 in.)
Outer synchro ring-to-gear clearance Ring pushed against gear0.95 1.68 mm (0.037 0.066 in.) 0.6 mm (0.024 in.)
Shift fork Finger thickness 7.4 7.6 mm (0.29 0.30 in.) Fork-to-synchro sleeve clearance 0.35 0.65 mm (0.014 0.026 in.) 1.0 mm (0.039 in.)
Reverse shift
fork Finger width 13.4 13.7 mm (0.528 0.539 in.)
Fork-to-reverse idler gear clearance 0.20 0.59 mm (0.008 0.023 in.) 1.3 mm (0.051 in.)
Shift arm I.D. 13.973 14.000 mm (0.5501 0.5512 in.) Finger width 16.9 17.0 mm (0.665 0.669 in.)
Shift arm-to-shift fork clearance 0.2 0.5 mm (0.008 0.020 in.) 0.62 mm (0.024 in.)
Select lever Finger width 14.85 14.95 mm (0.585 0.589 in.)
Change lever Shaft-to-select lever clearance 0.05 0.25 mm (0.002 0.010 in.) 0.50 mm (0.020 in.) Groove width 15.00 15.10 mm (0.591 0.594 in.)
Shaft-to-shift arm clearance 0.013 0.070 mm (0.0005 0.0028 in.) 0.1 mm (0.004 in.)
M/T differential
carrier Pinion shaft contact area I.D. 18.010 18.028 mm (0.7091 0.7098 in.)
Carrier-to-pinion shaft clearance 0.027 0.057 mm (0.0011 0.0022 in.) 0.1 mm (0.004 in.)
Driveshaft contact area I.D. 28.025 28.045 mm (1.1033 1.1041 in.)
M/T differential
pinion gear Backlash 0.05 0.15 mm (0.002 0.006 in.)
I.D. 18.042 18.066 mm (0.7103 0.7113 in.)
Pinion gear-to-pinion shaft clearance 0.059 0.095 mm (0.0023 0.0037 in.) 0.15 mm (0.006 in.)
M/T differential
80 mm shim 80 mm shim-to-bearing outer race
clearance in transmission housing 0 0.10 mm (0 0.039 in.) Adjust
08/08/21 14:07:15 61SNR030_020_0009
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