Engine Mechanical - 4.3L: Other Chevrolet Blazer S15 facelift

Intermittent

Test the vehicle under the same conditions that the customer reported in order to verify the system is operating properly.

Functional Check

With these systems, any blow-by in excess of the system capacity, from a badly worn engine, sustained heavy load, etc., is exhausted into the air cleaner and is drawn into the engine.

Proper operation of the crankcase ventilation system depends upon a sealed engine. If oil slugging or dilution is noted and the crankcase ventilation system is functioning properly, check the engine for a possible cause. Correct any problems.

If an engine is idling rough, check for a clogged crankcase ventilation valve, a dirty vent filter, air cleaner element, or plugged hose. Replace as required. Use the following procedure

1. Remove the crankcase ventilation valve from the rocker arm cover.
2. Operate the engine at idle.
3. Place your thumb over the end of the valve in order to check for a vacuum. If there is no vacuum at the valve, check for the following items: Plugged hoses The manifold port The crankcase ventilation valve
4. Turn OFF the engine. Remove the crankcase ventilation valve. Shake the valve. Listen for the rattle of the check needle inside of the valve. If valve does not rattle, replace the valve.

Tools Required

1. J 22794 Spark Plug Port Adapter
2. J 38606 Valve Spring Compressor
3. J 5892-D Valve Spring Compressor
4. J 42073 Valve Stem Seal Installer

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1. Remove the valve rocker arm cover. Refer to «Valve Rocker Arm Cover Replacement - Left»(ref-245721-S39991731882006111600000) . Refer to «Valve Rocker Arm Cover Replacement - Right»(ref-245721-S08526909832006111600000) .
2. Remove the required valve rocker arms. Refer to «Valve Rocker Arm and Push Rod Replacement»(ref-245721-S02646539972006111600000) .
3. Remove the required spark plugs.
4. Install the J 22794 into the spark plug hole.
5. Connect a shop air supply hose and apply compressed air in order to hold the valves in place.
6. Remove a bolt from a valve rocker arm.
7. Install a flat washer on the bolt.
8. Install the bolt in the valve rocker arm bolt hole for the valve spring requiring removal. CAUTION: Compressed valve springs have high tension against the valve spring compressor. Valve springs that are not properly compressed by or released from the valve spring compressor can be ejected from the valve spring compressor with intense force. Use care when compressing or releasing the valve spring with the valve spring compressor and when removing or installing the valve stem keys. Failing to use care may cause personal injury.
9. Use the J 5892-D in order to compress the valve spring. 9.1. Hook the slotted end of J 5892-D under the washer on the valve rocker arm bolt. 9.2. Apply steady pressure on the valve spring cap until the valve keys are accessible. NOTE: Completely engage the J 38606 jaws on the valve spring. The J 38606 may slip off and scratch the valve spring. Replace the valve spring if the valve spring becomes scratch.
10. Use J 38606 when J 5892-D will not fit.
11. Remove the valve keys (1).
12. Carefully release the valve spring tension
13. Remove the J 5892-D or the J 38606.
14. Remove the valve spring cap (2) and valve spring (3).
15. Remove the valve stem oil seal (4).

J 3049-A Valve Lifter Remover

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1. Remove the lower intake manifold. Refer to «Intake Manifold Replacement - Lower»(ref-245721-S13246137862006111600000) .
2. Remove the valve rocker arms and the valve pushrods. Refer to «Valve Rocker Arm and Push Rod Replacement»(ref-245721-S02646539972006111600000) . Important: Place the components in a rack so that the components can be reinstalled to their original location
3. Remove the bolts and valve lifter pushrod guide. Important: Place the valve lifters in the rack in the upright position in order to maintain the oil inside the valve lifters.
4. Remove the valve lifters. Important: Some valve lifters may be stuck in the valve lifter bores because of gum or varnish deposits and may require the use of J3049-A for removal.
5. Use the J 3049-A in order to remove the stuck valve lifters.
6. Use a cleaning solvent and a shop towel to clean any varnish from the valve lifter bores.
7. Inspect the valve lifter bores for excessive wear or scoring. Replace the engine block if there is excessive wear or deep scoring.
8. Inspect the camshaft for wear or damage. If the wear is questionable remove the camshaft and inspect. Refer to «CAMSHAFT & BEARINGS CLEANING & INSPECTION»(ref-245717-S31698046612006111600000) . Important: Components that are to be reused must be marked, sorted, and organized for assembly.
9. Mark, sort, and organize the components for assembly.
10. Clean the components in cleaning solvent.
11. Dry the components with compressed air.
12. Inspect the valve lifter pushrod guides for excessive wear.
13. Inspect the valve lifter pushrod guides for cracks or damage.
14. Inspect the valve lifter for the following: Broken or damaged clip (1) Worn pushrod socket (2) Scuffed or worn lifter body (3) If the valve lifter shows scuffing or wear, inspect the engine block valve lifter bores for wear. Worn roller (4) Loose or damaged pin (5) Plugged oil hole (6)

J 36660-A Electronic Torque Angle Meter

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1. Disconnect the negative battery cable.
2. Drain the cooling.
3. Remove the engine cooling fan assembly.
4. Remove the drive belt. Refer to «Drive Belt Replacement»(ref-245721-S33032740732006111600000) .
5. Loosen the nut holding the power steering pump rear bracket to the side of the engine.
6. Remove the nut holding the power steering pump rear bracket to the front of the engine
7. Remove the three bolts and the nut holding the power steering pump mounting bracket to the engine.
8. With the power steering pump and the A/C compressor still attached, slide the power steering pump mount bracket off of the stud and set aside.
9. Remove the power steering pump mounting bracket stud from the cylinder head.
10. Remove the lower intake manifold. Refer to «Intake Manifold Replacement - Lower»(ref-245721-S13246137862006111600000) .
11. Remove the exhaust manifold. Refer to «EXHAUST MANIFOLD REMOVAL - LEFT»(ref-245717-S00450598982006111600000) .
12. Remove the spark plug wire harness and the spark plug wire support.
13. Remove the valve pushrods. Refer to «Valve Rocker Arm and Push Rod Replacement»(ref-245721-S02646539972006111600000) .
14. Remove the ground wire bolt and the ground wire from the rear of the cylinder head.
15. Secure the ground wire out of the way.
16. Remove the bolt holding the fuel pipe bracket to the rear of the cylinder head.
17. Remove the engine coolant temperature sensor (if applicable).
18. Remove the engine coolant temperature gage sensor (if applicable).
19. Remove the spark plugs.
20. Remove the cylinder head bolts. NOTE: After removal, place the cylinder head on two wood blocks to prevent damage.
21. Remove the cylinder head.
22. Remove and discard the cylinder head gasket.
23. Remove the dowel pins (cylinder head locator) (if required).
24. Clean the engine block and the cylinder head sealing surfaces. NOTE: Clean all dirt, debris, and coolant from the engine block cylinder head bolt holes. Failure to remove all foreign material may result in damaged threads, improperly tightened fasteners or damage to components.
25. Clean the cylinder head bolts and the engine block bolt holes.
26. For further service to the cylinder head refer to the following: Refer to «CYLINDER HEAD DISASSEMBLE»(ref-245717-S19769733022006111600000) . Refer to «CYLINDER HEAD CLEANING & INSPECTION»(ref-245717-S36094407852006111600000) . Refer to «VALVE GUIDE REAMING/VALVE & SEAT GRINDING»(ref-245717-S33738004872006111600000) . Refer to «CYLINDER HEAD ASSEMBLE»(ref-245717-S35570713582006111600000) .

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1. Clean the cylinder head gasket surfaces on the engine block.
2. Inspect the dowel pins (cylinder head locator) for proper installation
3. Clean the cylinder head gasket surfaces on the cylinder head. Important: Do not use any type sealer on the cylinder head gasket (unless specified).
4. Install the NEW cylinder head gasket in position over the dowel pins (cylinder head locator).
5. Install the cylinder head onto the engine block. Guide the cylinder head carefully into place over the dowel pins and the cylinder head gasket.
6. Apply sealant GM P/N 12346004 or equivalent to the threads of the cylinder head bolts.
7. Install the cylinder head bolts finger tight.
8. Tighten the cylinder head bolts in sequence on the first pass. Tighten Tighten the bolts in sequence on the first pass to 30 N.m (22 lb ft).
9. Use the J 36660-A in order to tighten the cylinder head bolts in sequence. Tighten Rotate the long bolts (1, 4, 5, 8, and 9) an additional 75 degrees. Rotate the medium bolts (12 and 13) an additional 65 degrees. Rotate the short bolts (2, 3, 6, 7, 10, and 11) an additional 55 degrees.
10. Install the spark plugs.
11. If reusing the engine coolant temperature gauge sensor (if applicable), apply sealant GM P/N 12346004 or equivalent to the threads of the engine coolant temperature gauge sensor.
12. Install the engine coolant temperature gauge sensor (if applicable). Tighten Tighten the engine coolant temperature gauge sensor to 20 N.m (15 lb ft).
13. If reusing the engine coolant temperature sensor (if applicable), apply sealant GM P/N 12346004 or equivalent to the threads of the engine coolant temperature gauge sensor.
14. Install the engine coolant temperature sensor (if applicable). Tighten Tighten the engine coolant temperature sensor to 20 N.m (15 lb ft).
15. Install the valve pushrods. Refer to «Valve Rocker Arm and Push Rod Replacement»(ref-245721-S02646539972006111600000) .
16. Install the lower intake manifold. Refer to «Intake Manifold Replacement - Lower»(ref-245721-S13246137862006111600000) .
17. Install the exhaust manifold. Refer to «EXHAUST MANIFOLD INSTALLATION - LEFT»(ref-245717-S19033199232006111600000) .
18. Install the spark plug wire harness and spark plug wire support. Tighten Tighten the support bolts to 12 N.m (106 lb in).
19. Install the bolt for and the fuel pipe bracket to the rear of the cylinder head. Tighten Tighten the fuel pipe bracket bolt to 30 N.m (22 lb ft).
20. Install the ground wire and the ground wire bolt to the rear of the cylinder head. Tighten Tighten the ground wire bolt to 35 N.m (26 lb ft).
21. Install the stud for the power steering pump mounting bracket to the cylinder head. Tighten Tighten the power steering pump mounting bracket stud to 20 N.m (15 lb ft).
22. Slide the power steering pump mounting bracket with the power steering pump and the A/C compressor on the stud.
23. Position the power steering pump rear bracket on the studs.
24. Install the power steering pump mounting bracket three bolts and the nut.
25. Install the nut for the power steering pump rear bracket to the front of the engine. Tighten Tighten the power steering pump mounting bracket and the power steering pump rear bracket bolts and the nuts to 41 N.m (30 lb ft).
26. Install the drive belt. Refer to «Drive Belt Replacement»(ref-245721-S33032740732006111600000) .
27. Install the engine cooling fan assembly.
28. Fill the cooling system.
29. Connect the negative battery cable.

J 36660-A Electronic Torque Angle Meter

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1. Disconnect the negative battery cable.
2. Drain the cooling system.
3. Remove the engine cooling fan assembly.
4. Remove the generator mounting bracket.
5. Remove the generator mounting bracket stud from the cylinder head.
6. Remove the lower intake manifold. Refer to «Intake Manifold Replacement - Lower»(ref-245721-S13246137862006111600000) .
7. Remove the exhaust manifold. Refer to «EXHAUST MANIFOLD REMOVAL - RIGHT»(ref-245717-S33187622682006111600000) .
8. Remove the oil level indicator and tube. Refer to «Oil Level Indicator and Tube Replacement»(ref-245721-S27318474142006111600000) .
9. Remove the spark plug wire harness and spark plug wire support.
10. Remove the bolt and the ground strap from the rear of the cylinder head.
11. Remove the bolt and the ground wires from the rear of the cylinder head.
12. Secure the ground strap and the ground wires out of the way.
13. Remove the valve pushrods. Refer to «Valve Rocker Arm and Push Rod Replacement»(ref-245721-S02646539972006111600000) .
14. Remove the spark plugs.
15. Remove the cylinder head bolts. NOTE: After removal, place the cylinder head on two wood blocks to prevent damage.
16. Remove the cylinder head.
17. Remove and discard the cylinder head gasket.
18. Remove the dowel pins (cylinder head locator) (if required).
19. Clean the engine block and the cylinder head sealing surfaces. NOTE: Clean all dirt, debris, and coolant from the engine block cylinder head bolt holes. Failure to remove all foreign material may result in damaged threads, improperly tightened fasteners or damage to components.
20. Clean the cylinder head bolts and the engine block bolt holes.
21. For further service to the cylinder head refer to the following: Refer to «CYLINDER HEAD DISASSEMBLE»(ref-245717-S19769733022006111600000) . Refer to «CYLINDER HEAD CLEANING & INSPECTION»(ref-245717-S36094407852006111600000) . Refer to «VALVE GUIDE REAMING/VALVE & SEAT GRINDING»(ref-245717-S33738004872006111600000) . Refer to «CYLINDER HEAD ASSEMBLE»(ref-245717-S35570713582006111600000) .

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1. Clean the cylinder head gasket surfaces on the engine block.
2. Inspect the dowel pins (cylinder head locator) for proper installation
3. Clean the cylinder head gasket surfaces on the cylinder head. Important: Do not use any type sealer on the cylinder head gasket (unless specified).
4. Install the NEW cylinder head gasket in position over the dowel pins (cylinder head locator).
5. Install the cylinder head onto the engine block. Guide the cylinder head carefully into place over the dowel pins and the cylinder head gasket.
6. Apply sealant GM P/N 12346004 or equivalent to the threads of the cylinder head bolts.
7. Install the cylinder head bolts finger tight.
8. Tighten the cylinder head bolts in sequence on the first pass. Tighten Tighten the bolts in sequence on the first pass to 30 N.m (22 lb ft).
9. Use the J 36660-A in order to tighten the cylinder head bolts in sequence on the final pass. Tighten Rotate the long bolts (1, 4, 5, 8, and 9) an additional 75 degrees. Rotate the medium bolts (12 and 13) an additional 65 degrees. Rotate the short bolts (2, 3, 6, 7, 10, and 11) an additional 55 degrees.
10. Install the valve pushrods. Refer to «Valve Rocker Arm and Push Rod Replacement»(ref-245721-S02646539972006111600000) .
11. Install the lower intake manifold. Refer to «Intake Manifold Replacement - Lower»(ref-245721-S13246137862006111600000) .
12. Install the spark plug wire harness and the spark plug wire support and bolts. Tighten Tighten only the rear spark plug wire support bolt to 12 N.m (106 lb in).
13. Remove the front spark plug wire support bolt. The front spark plug wire support bolt is used to fasten the oil level indicator tube, and will be installed within the oil level indicator tube installation procedure.
14. Install the spark plugs.
15. Install the oil level indicator tube and indicator. Refer to «Oil Level Indicator and Tube Replacement»(ref-245721-S27318474142006111600000) .
16. Install the exhaust manifold. Refer to «EXHAUST MANIFOLD INSTALLATION - RIGHT»(ref-245717-S35287164942006111600000) .
17. Install the bolt and the ground wires to the rear of the cylinder head. Tighten Tighten the ground wire bolt to 35 N.m (26 lb ft).
18. Install the bolt and the ground strap to the rear of the cylinder head. Tighten Tighten the ground strap bolt to 35 N.m (26 lb ft).
19. Install the stud for the generator mounting bracket. Tighten Tighten the generator mounting bracket stud to 20 N.m (15 lb ft).
20. Install the generator mounting bracket.
21. Install the engine cooling fan assembly.
22. Fill the cooling system.
23. Connect the negative battery cable.

J 23523-F Balancer Remover and Installer

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1. Disconnect the negative battery cable.
2. Remove the fan shroud assembly.
3. Remove the drive belt. Refer to «Drive Belt Replacement»(ref-245721-S33032740732006111600000) . NOTE: To prevent damage to the end of the crankshaft when using a crankshaft balancer removal tool install a bolt in the crankshaft. Use a shorter bolt with the same threads as the crankshaft balancer bolt. This bolt will allow a place for the tool to push against. The shorter bolt is to keep from going past the threads in the crankshaft and damaging the crankshaft threads.
4. Remove the crankshaft balancer bolt and washer.
5. Remove the bolts and the crankshaft pulley.
6. Use the J 23523-F in order to remove the crankshaft balancer. 6.1. Install the J 23523-F plate and bolts onto the crankshaft balancer. Tighten Tighten the bolts to 25 N.m (18 lb ft). 6.2. Install the J 23523-F forcing screw into the plate. 6.3. Rotate the J 23523-F forcing screw clockwise in order to remove the crankshaft balancer.
7. Remove the J 23523-F from the crankshaft balancer.
8. Note the position and length of any front groove pins (crankshaft balancer) (if applicable).
9. Clean the crankshaft balancer in cleaning solvent.
10. Dry the crankshaft balancer with compressed air.
11. Inspect the crankshaft balancer for the following: Loose or improperly installed front groove pin (1) (crankshaft balancer) A properly installed front groove pin should be installed until flush or below flush with the face of the crankshaft balancer. Important: A crankshaft front oil sealing surface with excessive scoring, grooves, rust, or other damage must be replaced. Worn, grooved, or damaged crankshaft front oil sealing surface (2) Minor imperfections on the crankshaft balancer crankshaft front oil seal surface may be removed with a polishing compound or fine grade emery cloth. Worn, chunking, or deteriorated rubber (3) between the hub and the outer ring Worn or damaged keyway (4) Worn or damaged bolt hole threads (5)

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1. Apply a small amount of grease to the crankshaft front cover oil seal sealing surface if reusing the seal. Look to ensure that the front groove pin (crankshaft balancer) is installed in the proper location (if applicable). The length and location of the pins must be the same as the original length and location NOTE: The inertial weight section of the crankshaft balancer is assembled to the hub with a rubber type material. The correct installation procedures (with the proper tool) must be followed or movement of the inertial weight section of the hub will destroy the tuning of the crankshaft balancer.
2. Apply a small amount of adhesive GM P/N 12346141 or equivalent onto the crankshaft balancer keyway in order to seal the crankshaft balancer keyway and crankshaft joint.
3. Align the keyway of the crankshaft balancer with the crankshaft balancer key.
4. Install the crankshaft balancer onto the end of the crankshaft.
5. Use the J 23523-F in order to press the crankshaft balancer onto the crankshaft. 5.1. Install the J 23523-F plate and bolts onto the front of the crankshaft balancer. Tighten Tighten the J 23523-F plate bolts to 25 N.m (18 lb ft). 5.2. Install the J 23523-F screw into the end for the crankshaft. 5.3. Install the J 23523-F bearing, the washer, and the nut onto the screw. 5.4. Rotate the J 23523-F nut clockwise until the crankshaft balancer hub is completely seated against the crankshaft position sensor reluctor ring.
6. Remove the J 23523-F.
7. Install the crankshaft pulley and bolts. Tighten Tighten the crankshaft pulley bolts to 58 N.m (43 lb ft).
8. Ensure that the crown of the crankshaft balancer washer (2) is faced away from the engine.
9. Install the crankshaft balancer washer and the bolt. Tighten Tighten the crankshaft balancer bolt to 95 N.m (70 lb ft).
10. Install the drive belt. Refer to «Drive Belt Replacement»(ref-245721-S33032740732006111600000) .
11. Install the fan shroud assembly.
12. Connect the negative battery cable.

J 35468 Cover Aligner/Seal Installer

Scheme 730

1. Remove the crankshaft balancer. Refer to «Crankshaft Balancer Replacement»(ref-245721-S11373788762006111600000) .
2. Use a suitable prying tool to remove the crankshaft front oil seal.
3. Inspect engine front cover seal bore area for damage.
4. Inspect the crankshaft balancer seal area. Refer to «CRANKSHAFT BALANCER CLEANING AND INSPECTION»(ref-245717-S18741578472006111600000) .

Scheme 731

1. Lubricate the exterior of the seal with clean engine oil.
2. Use the J 35468 with a hammer in order to install the crankshaft front oil seal.
3. Inspect to ensure the crankshaft front oil seal is flush and square to the engine front cover.
4. Install the crankshaft balancer. Refer to «Crankshaft Balancer Replacement»(ref-245721-S11373788762006111600000) .

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1. Remove the engine oil pan Refer to «Oil Pan Replacement (2WD)»(ref-245721-S17394815162006111600000) or «Oil Pan Replacement (4WD)»(ref-245721-S05477745872006111600000) .
2. Disconnect the crankshaft position (CKP) sensor electrical connector.
3. Remove the crankshaft balancer. Refer to «Crankshaft Balancer Replacement»(ref-245721-S11373788762006111600000) .
4. Remove the water pump. Refer to «WATER PUMP REMOVAL»(ref-245717-S42194675992006111600000) .
5. Remove the CKP sensor.
6. Remove the crankshaft position sensor seal (O-ring).
7. Discard the crankshaft position sensor seal (O-ring).
8. Remove the engine front cover bolts. Important: After the composite engine front cover is removed do not reinstall the engine front cover. Always install a NEW engine front cover.
9. Remove the engine front cover.
10. Discard the engine front cover.
11. Clean all sealing surfaces.

J 5590 Crankshaft Gear Installer

Scheme 735

1. Remove the engine front cover. Refer to «Engine Front Cover Replacement»(ref-245721-S31933339402006111600000) .
2. Remove the crankshaft position sensor reluctor ring.

1. J 5825-A Crankshaft Gear Remover
2. J 5590 Crankshaft Gear Installer

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1. Remove the engine front cover. Refer to «Engine Front Cover Replacement»(ref-245721-S31933339402006111600000) .
2. Remove the crankshaft position sensor reluctor ring. NOTE: In order to rotate the engine install a bolt with the same threads as the crankshaft, but do not use the crankshaft balancer bolt or a bolt longer than 1 inch, in the crankshaft. Failing to do so will cause damage to the bolt threads and the crankshaft threaded hole when removing the bolt.
3. Install a 7/16-20 x 1 inch bolt into the end of the crankshaft. NOTE: Align the timing marks before removing the timing chain. If it is necessary to turn either the camshaft or the crankshaft with the timing chain removed, loosen or remove the valve rocker arms. Turning either the crankshaft or camshaft with the timing chain removed may cause the pistons to contact the valves, resulting in damage.
4. Rotate the crankshaft until: 4.1. The timing marks on both sprockets line up. 4.2. The number four cylinder is at top dead center (TDC) of the compression stroke.
5. Remove the camshaft sprocket bolts.
6. Remove the camshaft sprocket and the camshaft timing chain.
7. Remove the crankshaft sprocket using the J 5825-A.
8. Remove the crankshaft balancer key.
9. Clean the components with cleaning solvent.
10. Dry the components with compressed air.
11. Inspect the camshaft timing chain for binding or wear.
12. Inspect the camshaft sprocket and the crankshaft sprocket for: Broken teeth (1) Damaged teeth (2) Chipped teeth (3) Worn teeth Uneven wear on the edge of the teeth Worn valleys between the sprocket teeth Crankshaft sprocket keyway for wear

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1. Install the crankshaft balancer key into the crankshaft keyway. The crankshaft balancer key should be parallel to the crankshaft or with a slight incline.
2. Align the keyway of the crankshaft sprocket with the crankshaft balancer key.
3. Use the J 5590 in order to install the crankshaft sprocket. Important: Install the camshaft sprocket with the alignment mark at the 6 o'clock position
4. Install the camshaft sprocket and the camshaft timing chain
5. Look to ensure that the crankshaft sprocket is aligned at the 12 o'clock position and camshaft sprocket is aligned at the 6 o'clock position Important: Do not use a hammer to install the camshaft sprocket onto the camshaft. To do so may dislodge the expansion cup plug (camshaft rear bearing hole).
6. Install camshaft sprocket bolts. Tighten Tighten the camshaft sprocket bolts to 25 N.m (18 lb ft).
7. Install the crankshaft position sensor reluctor ring. 7.1. Align the keyway on the crankshaft position sensor reluctor ring with the crankshaft balancer key in the crankshaft. 7.2. Use the J 5590 in order to push the crankshaft position sensor reluctor ring onto the crankshaft until completely seated against the crankshaft sprocket. 7.3. Remove the bolt that was installed in the end of the crankshaft. 7.4. Install the engine front cover. Refer to «Engine Front Cover Replacement»(ref-245721-S31933339402006111600000) .

1. J 8092 Universal Driver Handle
2. J 36660-A Electronic Torque Angle Meter
3. J 36996 Balance Shaft Installer

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1. Remove the radiator.
2. Remove the A/C condenser. Refer to appropriate A/C article.
3. Remove the valve lifter pushrod guide. Refer to «Valve Lifter Replacement»(ref-245721-S10862684362006111600000) .
4. Remove the timing chain and camshaft sprockets. Refer to «Timing Chain and Sprockets Replacement»(ref-245721-S00448290522006111600000) .
5. Remove the balance shaft drive gear. Important: The balance shaft drive and balance shaft driven gears are serviced as a set. The set includes the balance shaft driven gear bolt.
6. Remove the balance shaft driven gear bolt from the balance shaft. 6.1. Use a wrench in order to secure the balance shaft. Place the wrench onto the balance shaft near to the balance shaft front bearing. 6.2. Remove the balance shaft bolt. 6.3. Remove the wrench from the balance shaft.
7. Remove the balance shaft driven gear from the balance shaft.
8. Remove the bolts and the balance shaft retainer. Important: The balance shaft and the balance shaft front bearing are serviced only as a package. Do not remove the balance shaft front bearing from the balance shaft.
9. Use a soft-faced hammer in order to remove the balance shaft from the engine block.
10. Clean and inspect the balance shaft. Refer to «BALANCE SHAFT CLEANING & INSPECTION»(ref-245717-S13948326432006111600000) .

1. J 26941 Bushing/Bearing Remover
2. J 38834 Balance Shaft Service Kit

J 41712 Oil Pressure Switch Socket

J 35621-B Rear Main Seal Installer

J 41427 Engine Lift Bracket

Tools and Equipment

Special tools are listed and illustrated throughout this section with a complete listing at the end of the section. These tools (or their equivalents) are specially designed to quickly and safely accomplish the operations for which they are intended. The use of these special tools will also minimize possible damage to engine components. Some precision measuring tools are required for inspection of certain critical components. Torque wrenches and a torque angle meter are necessary for the proper tightening of various fasteners.

To properly service the engine assembly, the following items should be readily available

1. Approved eye protection and safety gloves
2. A clean, well-lit, work area
3. A suitable parts cleaning tank
4. A compressed air supply
5. Trays or storage containers to keep parts and fasteners organized
6. An adequate set of hand tools
7. Approved engine repair stand
8. An approved engine lifting device that will adequately support the weight of the components

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