2006 ACURA CSX engine

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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.
08/08/21 14:28:44 61SNR030_060_0066
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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
08/08/21 14:32:25 61SNR030_070_0001
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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
08/08/21 14:32:25 61SNR030_070_0002
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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
08/08/21 14:32:31 61SNR030_070_0004
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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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Main Bearing Selection
Crankshaft Bore Code Location
Main Journal Code Location
7-7
No. 1 JOURNAL
(PULLEY END)
No. 5 JOURNAL
(TRANSMISSION END)
No. 1 JOURNAL No. 5 JOURNAL
1. Numbers, letters or bars have been stamped on theend of the engine block as a code for the size of
each of the five main journal bores. Write down the
crank bore codes.
If you cannot read the codes because of
accumulated dirt and dust, do not scrub them with
a wire brush or scraper. Clean them only with
solvent or detergent. 2. The main journal codes are stamped on the
crankshaft in either location.
(cont’d)
08/08/21 14:32:32 61SNR030_070_0007
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Connecting Rod Bearing Clearance
Inspection
Connecting Rod Bearing-to-Journal Oil Clearance
K20Z2 engine
Standard (New): 0.020 0.050 mm (0.0008 0.0020 in.)
Service Limit: 0.060 mm (0.0024 in.)
K20Z3 engine
Standard (New): 0.032 0.066 mm (0.0013 0.0026 in.)
Service Limit: 0.077 mm (0.0030 in.)
7-87-8 Engine Block
Crankshaft Main Bearing
Replacement (cont’d)
Connecting Rod Bearing
Replacement
Larger crank bore
1or
AorI 2or
BorII 3or
C or III4or
D or IIII
Smaller bearing (Thicker)
Blue
Pink
Yellow Green
Green/
Brown
Brown Green
Green/
Brown
Brown Green
Green/
Brown
Brown Green
Green/
Brown
Brown
Black Black/
Blue
Crank
bore
code
Pink/
YellowYellow
Yellow
Pink/
Yellow
Black
Black Black/
Blue
Main
journal
code
1
2
3
4
5
6
Smaller
main
journal Smaller
bearing
(Thicker)
3. Use the crank bore codes and crank journal codes
to select the appropriate replacement bearings
from the following table.
NOTE: Color code is on the edge of the bearing.
 When using bearing halves of different colors, it does not matter which color is used in the top or
bottom. 1. Remove the oil pump (see page 8-16).
2. Remove the baffle plates (see step 8 on page 7-13).
3. Remove the connecting rod cap and the bearing
half.
4. Clean the crankshaft rod journal and the bearing half with a clean shop towel.
5. Place plastigage across the rod journal.
6. Reinstall the bearing half and connecting rod cap, and tighten the bolts to 20 N·m (2.0 kgf·m, 14 lbf·ft)90 ° (K20Z2 engine) or 29 N·m (3.0 kgf·m,
22 lbf·ft) 90 ° (K20Z3 engine).
NOTE:  Apply new engine oil to the bolt threads and flanges.
 Do not rotate the crankshaft during inspection.
7. Remove the connecting rod cap and the bearing half, and measure the widest part of the plastigage.
08/08/21 14:32:33 61SNR030_070_0008
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Connecting Rod Bearing Selection
Connecting Rod Big End Bore Code LocationsNormal Bore Size
K20Z2 engine: 48.0 mm (1.89 in.)
K20Z3 engine: 51.0 mm (2.01 in.)
7-9
8. If the plastigage measures too wide or too narrow,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.
9. 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 clearance again. If the proper clearance
cannot be obtained by using the appropriate larger
or smaller bearing, replace the crankshaft, and start
over. 1. Inspect each connecting rod for cracks and heat
damage.
2. Each rod has a tolerance range from 0 to 0.024 mm (0.0009 in.), in 0.006 mm (0.0002 in.) increments,
depending on the size of its big end bore. It is then
stamped with a number or bar (1, 2, 3, or 4/l, ll, lll,
or llll) indicating the range. You may find any
combination of numbers and bars in any engine.
(Half the number or bar is stamped on the bearing
cap, the other half is on the rod.)
If you cannot read the code because of an
accumulation of oil and varnish, do not scrub it
with a wire brush or scraper. Clean it only with
solvent or detergent.
(cont’d)
08/08/21 14:32:33 61SNR030_070_0009
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