ACURA CSX 2006 Service Repair Manual





6-63
A
B
B50 mm (2.0 in.)
45 mm (1.8 in.)
A
FIRST STEP
SECOND STEP
THIRD STEP
(New bolt)
4. Set the crankshaft to top dead center (TDC). Align
the TDC mark (A) on the crankshaft sprocket with
the pointer (B) on the engine block.
5. Set the camshaft pulley to TDC (see step 2 on page 6-21).
6. Install the cylinder head on the engine block.
7. Measure the diameter of each cylinder head bolt at point A and point B.
8. If either diameter is less than 10.6 mm (0.42 in.), replace the cylinder head bolt. 9. Apply new engine oil to the threads and under the
bolt heads of all cylinder head bolts.
10. Tighten the cylinder head bolts in sequence to 39 N·m (4.0 kgf·m, 29 lbf·ft). Use a beam-type
torque wrench. When using a preset click-type
torque wrench, be sure to tighten slowly and do not
overtighten. If a bolt makes any noise while you are
torquing it, loosen the bolt and retighten it from the
first step.
11. After torquing, tighten all cylinder head bolts in two steps (90 ° per step) using the sequence shown in
step 10. If you are using a new cylinder head bolt,
tighten the bolt an extra 90 °.
NOTE: Remove the cylinder head bolt if you
tightened it beyond the specified angle, and go
back to step 6 of the procedure. Do not loosen it
back to the specified angle.
(cont’d)
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6-64Cylinder Head
Cylinder Head Installation (cont’d)
B
A
8 x 1.25 mm
22 N·m (2.2 kgf·m, 16 lbf·ft) A
B
A
B
6x1.0mm
12 N·m
(1.2 kgf·m, 8.7 lbf·ft)
12. Install the rocker arm assembly:
 K20Z2 engine (see page 6-60)
 K20Z3 engine (see page 6-61)
13. Install the cam chain (see page 6-21).
14. Connect the following engine wire harness connectors, and install the wire harness clamps to
the cylinder head:
 Four fuel injector connectors
 Engine coolant temperature (ECT) sensor 1 connector
 Camshaft position (CMP) sensor A (Intake) connector
 Camshaft position (CMP) sensor B (Exhaust) connector
 Rocker arm oil control valve connector
 Rocker arm oil pressure switch connector
 EVAP canister purge valve connector
 Variable valve timing control (VTC) oil control solenoid valve connector
 Exhaust gas recirculation (EGR) valve connector (K20Z2 engine)
 Engine oil pressure switch connector
15. Install the bolt (A) securing the connecting pipe.
16. Connect the water bypass hose (B). 17. Connect the upper radiator hose (A) and the heater
hoses (B).
18. Install the harness holder bracket (A), then install the harness holder (B).
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6-65
A
B6x1.0mm
12 N·m
(1.2 kgf·m, 8.7 lbf·ft)
B
A A
B
19. Connect the positive crankcase ventilation (PCV)hose (A) (K20Z2 engine) and install the ground
cable (B).
20. Connect the fuel feed hose (A) (see page 11-331), then install the quick-connect fitting cover (B). 21. Connect the evaporative emission (EVAP) canister
hose (A) and the brake booster vacuum hose (B).
22. Install the exhaust manifold (see page 9-11).
23. Install the intake manifold:  K20Z2 engine (see page 9-4)
 K20Z3 engine (see page 9-9)
24. Install the drive belt (see page 4-31).
25. Install the air cleaner assembly (see page 11-345).
26. After installation, check that all tubes, hoses and connectors are installed correctly.
27. Inspect for fuel leaks. Turn the ignition switch to ON (II) (do not operate the starter) so that the fuel
pump runs for about 2 seconds and pressurizes the
fuel line. Repeat this operation three times, then
check for fuel leakage at any point in the fuel line.
(cont’d)
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6-666-66 Cylinder Head
Cylinder Head Installation (cont’d) Sealing Bolt Installation
A
22x1.5mm
74 N·m
(7.5 kgf·m, 54 lbf·ft)
B
28. Refill the radiator with engine coolant, and bleed
the air from the cooling system with the heater
valve open (see step 6 on page 10-8).
29. Do the engine control module (ECM)/powertrain control module (PCM) idle lean procedure
(see page 11-310).
30. Do the crankshaft position (CKP) pattern clear/CKP pattern lean procedure (see page 11-4).
31. Inspect the idle speed (see page 11-309).
32. Inspect the ignition timing (see page 4-20). NOTE: When installing the sealing bolt (A), always use
a new washer (B).
Replace.
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Engine Mechanical
Engine Block
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Special Tools
. 7-2
Component Location Index . 7-3
Connecting Rod and Crankshaft End Play Inspection . 7-5
Crankshaft Main Bearing Replacement . 7-6
Connecting Rod Bearing Replacement . 7-8
Oil Pan Removal . 7-11
Crankshaft and Piston Removal . 7-13
Crankshaft Inspection . 7-15
Block and Piston Inspection . 7-16
Cylinder Bore Honing . 7-18
Piston, Pin, and Connecting Rod Replacement . 7-18
Piston Ring Replacement . 7-21
Piston Installation . 7-23
Connecting Rod Bolt Inspection . 7-25
Crankshaft Installation . 7-25
Oil Pan Installation . 7-29
Transmission End Crankshaft Oil Seal Installation - In Car . 7-32
Sealing Bolt Installation . 7-33
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(#'
%)Ref. No. Tool Number Description Qty
7-2
Engine Block
Special Tools
07ZAD-PNAA100
Oil Seal Driver Attachment 96 1
07746-0010700 Attachment, 24 x 26 mm 1
07749-0010000 Driver 1
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7-3
Component Location Index
MAIN BEARINGSDOWEL PINS LOWER BLOCK
BAFFLE PLATE
CRANKSHAFT CRANKSHAFT OIL SEAL,
TRANSMISSION END
BAFFLE PLATE
DRIVE PLATE (A/T model)
THRUST WASHERS FLYWHEEL (M/T model)
(cont’d)
Oil Clearance Inspection,
page 7-6
Selection, page 7-7
End Play Inspection, page 7-5
Removal, page 7-13
Inspection, page 7-15
Installation, page 7-25
Installation, step 24 on page 7-27
Installation - in Car, page 7-32
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7-4Engine Block
Component Location Index (cont’d)
PISTON RINGS
PISTON PIN
CONNECTING ROD
CONNECTING ROD
BEARINGS CONNECTING ROD
BEARING CAP
PISTON
ENGINE BLOCK
CONNECTING ROD BOLTS DOWEL PINSReplacement, page 7-21
Removal, page 7-18
Inspection, page 7-19
Installation, page 7-20
End Play Inspection, page 7-5
Small End Measurement, page 7-19
Oil Clearance Inspection,page 7-8
Selection, page 7-9
Removal, page 7-13
Measurement, page 7-16
Installation, page 7-23
RidgeRemoval,step15onpage7-14
Cylinder Bore Inspection, page 7-16
Warpage Inspection, page 7-16
Cylinder Bore Honing, page 7-18
Inspection, page 7-25
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µµ
µµ
Connecting Rod End Play
Standard (New): 0.15 0.30 mm (0.006 0.012 in.)
Service Limit: 0.40 mm (0.016 in.) Crankshaft End Play
Standard (New): 0.10 0.35 mm (0.004 0.014 in.)
Service Limit: 0.45 mm (0.018 in.)
7-5
Connecting Rod and Crankshaft End Play Inspection
1. Remove the oil pump (see page 8-16).
2. Remove the baffle plates (see step 8 on page 7-13).
3. Measure the connecting rod end play with a feeler
gauge between the connecting rod and the
crankshaft.
4. If the connecting rod end play is beyond the service limit, install a new connecting rod, and recheck. If it
is still beyond the service limit; replace the
crankshaft (see page 7-13). 5. Push the crankshaft firmly away from the dial
indicator, and zero the dial against the end of the
crankshaft. Then pull the crankshaft firmly back
toward the indicator, the dial reading should not
exceed the service limit.
6. If the end play is beyond the service limit, replace the thrust washers and recheck. If it is still beyond
the service limit, replace the crankshaft (see page
7-13).
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Main Bearing Clearance Inspection
Main Bearing-to-Journal Oil Clearance
No.1,2,4,5Journals:
Standard (New): 0.017 0.041 mm (0.0007 0.0016 in.)
Service Limit: 0.050 mm (0.0020 in.)
No. 3 Journal:
Standard (New): 0.025 0.049 mm (0.0010 0.0019 in.)
Service Limit: 0.055 mm (0.0022 in.)
7-6 Engine Block
Crankshaft Main Bearing Replacement
1. To check the main bearing-to-journal oil clearance,
remove the lower block and the bearing halves
(see page 7-13).
2. Clean each main journal and bearing half with a clean shop towel.
3. Place one strip of plastigage across each main journal.
4. Reinstall the bearings and lower block, then tighten the bolts to 29 N·m (3.0 kgf·m, 22 lbf·ft) 56 ° in
thepropersequence(seestep19onpage7-27).
NOTE: Apply new engine oil to the bolt threads and flanges.
 Do not rotate the crankshaft during inspection.
5. Remove the lower block and the bearings again, and measure the widest part of the plastigage. 6. If the plastigage measures too wide or too narrow,
remove the crankshaft, and remove the upper half
of the bearing. Install a new, complete bearing with
the appropriate color code(s), and recheck the
clearance. Do not file, shim, or scrape the bearings
or the caps to adjust clearance.
7. If the plastigage shows the clearance is still incorrect, try the next larger or smaller bearing (the
color listed above or below the current one), and
check again. If the proper clearance cannot be
obtained by using the appropriate larger or smaller
bearings, replace the crankshaft, and start over.
08/08/21 14:32:32 61SNR030_070_0006
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