Engine Block (K24Z6): Overview Honda CR-V III рестайлинг

Scheme 391

Scheme 392

Scheme 393

Scheme 394

Scheme 395

1. Remove the oil pump (see «OIL PUMP OVERHAUL»(ref-371380-S16458731652010091000000) ).
2. Remove the baffle plate (see step 7 ).
3. Measure the connecting rod end play with a feeler gauge between the connecting rod and the crankshaft. Connecting Rod End Play Standard (New): 0.15-0.35 mm (0.006-0.014 in) Service Limit: 0.40 mm (0.016 in)
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 «CRANKSHAFT AND PISTON REMOVAL»(ref-371379-S13868384382010091000000) ).
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. Crankshaft End Play Standard (New): 0.10-0.35 mm (0.004-0.014 in) Service Limit: 0.45 mm (0.018 in)
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 «CRANKSHAFT AND PISTON REMOVAL»(ref-371379-S13868384382010091000000) ).

Scheme 396

Scheme 397

1. To check the main bearing-to-journal oil clearance, remove the lower block and the bearing halves (see «CRANKSHAFT AND PISTON REMOVAL»(ref-371379-S13868384382010091000000) ).
2. Clean each main journal and the bearing half with a clean shop towel.
3. Place one strip of plastigage across each main journal.
4. Reinstall the bearings and the lower block, then tighten the bolts to 29 N.m (3.0 kgf.m, 22 lbf.ft). NOTE: Apply new engine oil to the bolt threads and flanges. Do not rotate the crankshaft during inspection.
5. Tighten the bearing cap bolts an additional 48°.
6. Remove the lower block and the bearings again, and measure the widest part of the plastigage. Main Bearing-to-Journal Oil Clearance No. 1, 2, 4, 5 Journals: 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. 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.
8. 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.

Scheme 398

1. Numbers, letters, or bars have been stamped on the end 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.

Scheme 399

Scheme 400

1. 2. The main journal codes are stamped on the crankshaft in either location.
2. 3. Use the crank bore codes and crank journal codes to select the appropriate replacement bearings from the following table. Bearing Identification Color code is on the edge of the bearing

Scheme 401

1. Remove the oil pump (see «OIL PUMP REMOVAL»(ref-371380-S33346928982010091000000) ).
2. Remove the baffle plate (see step 7 ).
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 the cap, and tighten the bolts to 41 N.m (4.2 kgf.m, 30 lbf.ft) +120 ° NOTE: Apply new engine oil to the bolt threads and flanges. Do not rotate the crankshaft during inspection.
7. Remove the rod cap and the bearing half, and measure the widest part of the plastigage. Connecting Rod Bearing-to-Journal Oil Clearance Standard (New): 0.032-0.066 mm (0.0013-0.0026 in) Service Limit: 0.077 mm (0.0030 in)
8. If the plastigage measures too wide or too narrow, remove the cap, and 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.

Scheme 402

Scheme 403

Scheme 404

1. Inspect each connecting rod for cracks and heat damage. Connecting Rod Big End Bore Code Locations
2. Each connecting 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/I, II, III, or IIII) 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. Normal Bore Size: 51.0 mm (2.01 in) Connecting Rod Journal Code Location
3. The connecting rod journal codes are stamped on the crankshaft in either location.
4. Use the big end bore codes and rod journal codes to select appropriate replacement bearings from the following table. Bearing Identification Color code is on the edge of the bearing

Scheme 405

Scheme 406

Scheme 407

Scheme 408

1. If the engine is already out of the vehicle, go to step 21 .
2. Raise the vehicle on the lift.
3. Drain the engine oil (see «ENGINE OIL REPLACEMENT»(ref-371380-S20782567512010091000000) ).
4. Remove the front wheels.
5. Remove the splash shield (see «FRONT SPLASH SHIELD REPLACEMENT»(/honda/cr-v/iii-2009-2012/remont/exterior-body-panels/#fenderwell__front-splash-shield-replacement) ).
6. Remove the under-floor three way catalytic converter (TWC) (see «UNDER-FLOOR TWC REMOVAL/INSTALLATION»(/honda/cr-v/iii-2009-2012/remont/auxiliary-emission-control-systems/#catalytic-converter-system-k24z6) ).
7. Remove the shift cable (see «SHIFT CABLE REPLACEMENT»(/honda/cr-v/iii-2009-2012/remont/automatic-trans/#automatic-transmission) ).
8. Separate the stabilizer links from the stabilizer bar (see «STABILIZER LINK REMOVAL/INSTALLATION»(ref-371376-S26796391872010091000000) ).
9. Separate the knuckles from the lower arms (see «LOWER ARM REMOVAL/INSTALLATION»(ref-371376-S31596012782010091000000) ).
10. 4WD model: Remove the propeller shaft (see «PROPELLER SHAFT RUNOUT»(ref-371346-S10661307812010091000000) ).
11. Remove a bolt securing the P/S fluid line bracket, and unclamp the P/S fluid line clamps on the front subframe.
12. Remove the bolts securing the left steering gearbox mounting bracket.
13. Remove the bolts securing the right steering gearbox mounting brackets.
14. Remove the bolt securing the automatic transmission fluid (ATF) filter.
15. Remove the lower torque rod (see «SUBFRAME REPLACEMENT»(ref-371383-S31023391282010091000000) ).
16. Make the appropriate reference lines at both ends of the subframe that line up with the body.
17. Remove the subframe mounting bolts on both side.
18. Attach the subframe adapter to the subframe and hang the belt of the subframe adapter over the front of the subframe, then secure the belt with its stop.
19. Raise the jack and line up the slots in the arms with the bolt holes on the corner of the jack base, then attach them with bolts securely.
20. Remove the subframe (see «SUBFRAME REPLACEMENT»(ref-371383-S31023391282010091000000) ).
21. Remove the lower torque rod bracket.
22. Remove the torque converter cover (A), and remove the two bolts securing the transmission.
23. Remove the bolts securing the oil pan.
24. Using a flat blade screwdriver, separate the oil pan from the engine block in the places shown.
25. Remove the oil pan.

Scheme 409

Scheme 410

Scheme 411

Scheme 412

Scheme 413

Scheme 414

Scheme 415

1. Remove the engine/transmission (see «ENGINE REMOVAL»(ref-371373-S04268357342010091000000) ).
2. Remove the transmission (see «TRANSMISSION REMOVAL»(/honda/cr-v/iii-2009-2012/remont/automatic-trans/#automatic-transmission) ).
3. Remove the drive plate (see «DRIVE PLATE REMOVAL AND INSTALLATION»(/honda/cr-v/iii-2009-2012/remont/automatic-trans/#automatic-transmission) ).
4. Remove the oil pan (see «OIL PAN REMOVAL»(ref-371379-S38819138822010091000000) ).
5. Remove the oil pump (see «OIL PUMP OVERHAUL»(ref-371380-S16458731652010091000000) ).
6. Remove the cylinder head (see «CYLINDER HEAD REMOVAL»(ref-371364-S01169204732010091000000) ).
7. Remove the baffle plate.
8. Remove the 8 mm bolts
9. Remove the bearing cap bolts. To prevent warpage, loosen the bolts in sequence 1/3 turn at a time; repeat the sequence until all bolts are loosened.
10. Remove the lower block and the bearings. Keep all the bearings in order.
11. Remove the rod caps/bearings. Keep all the caps/bearings in order.
12. Lift the crankshaft out of the engine. Be careful not to damage the journals and the CKP pulse plate.
13. Remove the CKP pulse plate from the crankshaft (see «CKP PULSE PLATE REPLACEMENT»(ref-371379-S35271788552010091000000) ).
14. Remove the upper bearing halves from the connecting rods, and set them aside with their respective caps.
15. If you can feel a ridge of metal or hard carbon around the top of each cylinder, remove it with a ridge reamer (A). Follow the reamer manufacturer's instructions. If the ridge is not removed, it may damage the pistons as they are pushed out.
16. Use the wooden handle of a hammer (A) to drive out the piston/connecting rod assembly (B).
17. Reinstall the lower block and the bearings on the engine block in the proper order.
18. Reinstall the connecting rod bearings and the caps after removing each piston/connecting rod assembly.
19. Mark each piston/connecting rod assembly with its cylinder number to make sure they are reinstalled in the original order.

Note. The existing number on the connecting rod does not indicate its position in the engine, it indicates the rod bore size.

Scheme 416

Scheme 417

1. Remove the crankshaft from the engine block (see «CRANKSHAFT AND PISTON REMOVAL»(ref-371379-S13868384382010091000000) ).
2. Remove the CKP pulse plate from the crankshaft (see «CKP PULSE PLATE REPLACEMENT»(ref-371379-S35271788552010091000000) ).
3. Clean the crankshaft oil passages with pipe cleaners or a suitable brush.
4. Clean the keyway and threads, and check for damage.
5. Measure the out-of-round at the middle of each rod and the main journal in two places. The difference between measurements on each journal must not be more than the service limit. Journal Out-of-Round Standard (New): 0.004 mm (0.0002 in) max. Service Limit: 0.010 mm (0.0004 in)
6. Measure the taper at the edges of each rod and the main journal. The difference between measurements on each journal must not be more than the service limit. Journal Taper Standard (New): 0.005 mm (0.0002 in) max. Service Limit: 0.010 mm (0.0004 in) Straightness
7. Place the V-blocks on a flat surface.
8. Check the total runout with the crankshaft supported on V-blocks.
9. Measure the runout on all main journals. Rotate the crankshaft two complete revolutions. The difference between measurements on each journal must not be more than the service limit. Crankshaft Total Runout Standard (New): 0.03 mm (0.001 in) max. Service Limit: 0.04 mm (0.002 in)

Scheme 418

Scheme 419

Scheme 420

Scheme 421

1. Remove the crankshaft and the pistons (see «CRANKSHAFT AND PISTON REMOVAL»(ref-371379-S13868384382010091000000) ).
2. Check the piston for distortion or cracks.
3. Measure the piston diameter at a point 13 mm (0.5 in) from the bottom of the skirt. There are two standard-size pistons (No Letter or A, and B). The letter is stamped on the top of the piston. Letters are also stamped on the engine block as the cylinder bore sizes. Piston Skirt Diameter Standard (New): No Letter (or A): 86.980-86.990 mm (3.4244-3.4248 in) B: 86.970-86.980 mm (3.4240-3.4244 in) Service Limit: No Letter (or A): B: 86.930 mm (3.4224 in) 86.920 mm (3.4220 in) Oversize Piston Skirt Diameter 0.25: 87.230-87.240 mm (3.4342-3.4346 in)
4. Measure the wear and taper in direction X and Y at three levels inside each cylinder as shown. If the measurements in any cylinder are beyond the Oversize Bore Service Limit, replace the engine block. If the engine block is being rebored, refer to step 7 after reboring. Cylinder Bore Size Standard (New): A or I: 87.010-87.020 mm (3.4256-3.4260 in) B or II: 87.000-87.010 mm (3.4252-3.4256 in) Service Limit: 87.070 mm (3.4279 in) Oversize Bore 0.25: 87.250-87.260 mm (3.4350-3.4354 in) Reboring Limit: 0.025 mm (0.01 in) max. Bore Taper Limit (Difference between first 0.02 mm (0.001 in) and third measurement)
5. Scored or scratched cylinder bores must be honed.
6. Check the top of the engine block for warpage. Measure along the edges and across the center as shown. Engine Block Warpage Standard (New): 0.07 mm (0.003 in) max. Service Limit: 0.10 mm (0.004 in)
7. Calculate the difference between the cylinder bore diameter and the piston diameter. If the clearance is near or exceeds the service limit, inspect the piston and cylinder bore for excessive wear. Piston-to-Cylinder Bore Clearance Standard (New): 0.020-0.040 mm (0.0008-0.0016 in) Service Limit: 0.05 mm (0.002 in)

See also:
• FRONT SPLASH SHIELD REPLACEMENT
• UNDER-FLOOR TWC REMOVAL/INSTALLATION
• SHIFT CABLE REPLACEMENT