Engine Mechanical: Removal & Installation Infiniti I35 II

Removal

Scheme 66

Scheme 67

Scheme 68

Scheme 69

Scheme 70

Scheme 71

Scheme 72

Scheme 73

Scheme 74

Scheme 75

Scheme 76

1. Remove engine undercover.
2. Drain engine oil.
3. Remove steel oil pan bolts.
4. Remove steel oil pan. Insert Tool between aluminum oil pan and steel oil pan. Be careful not to damage aluminum mating surface. Do not insert screwdriver, or oil pan flange will be deformed. Slide Tool by tapping on the side of the Tool with a hammer. Remove steel oil pan.
5. Remove oil strainer.
6. Remove front exhaust tube and its support.
7. Set a suitable transmission jack under transaxle and hoist engine with engine slinger.
8. Remove crankshaft position sensor (POS) from oil pan.
9. Remove front and rear engine mounting nuts and bolts.
10. Remove center member.
11. Remove drive belts.
12. Remove air conditioner compressor and bracket.
13. Remove rear cover plate.
14. Remove aluminum oil pan bolts in numerical order.
15. Remove four engine-to-transaxle bolts.
16. Remove aluminum oil pan. Insert an appropriate size tool into the notch of aluminum oil pan as shown in the figure. Be careful not to damage aluminum mating surface. Do not insert screwdriver, or oil pan flange will be deformed. Pry off aluminum oil pan by moving the tool up and down. Remove aluminum oil pan.
17. Remove O-rings from cylinder block and oil pump body.

Scheme 77

Scheme 78

Scheme 79

Scheme 80

Scheme 81

Scheme 82

Scheme 83

Scheme 84

Scheme 85

Scheme 86

Scheme 87

Scheme 88

1. Install aluminum oil pan. Use a scraper to remove old liquid gasket from mating surfaces. Also remove old liquid gasket from mating surface of cylinder block, front cover and steel oil pan. Remove old liquid gasket from the bolt hole and thread. Apply sealant to front cover gasket and rear oil seal retainer gasket. Apply a continuous bead of liquid gasket to mating surface of aluminum oil pan. Use Genuine RTV silicone sealant or equivalent. Refer to «RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS»(ref-180422-S02321372872005072600000) . Apply liquid gasket to inner sealing surface as shown in figure. Be sure liquid gasket is 4.0 to 5.0 mm (0.157 to 0.197 in) or 4.5 to 5.5 mm (0.177 to 0.217 in) wide as shown in the figure. Attaching should be done within 5 minutes after coating. Install O-rings, cylinder block and oil pump body. Install aluminum oil pan. Tighten bolts in numerical order. Wait at least 30 minutes before refilling engine oil.
2. Install the four engine-to-transaxle bolts. For tightening torque, refer to «INSTALLATION»(ref-230079-S19482223802006042600000) .
3. Install rear cover plate.
4. Install air conditioner compressor and bracket. Refer to «REMOVAL AND INSTALLATION»(ref-180428-S21337147192005072600000) .
5. Install drive belts.
6. Install center member.
7. Install front and rear engine mounting insulator nuts and bolts.
8. Install crankshaft position sensor (POS) with rubber seal, and heated oxygen sensor 1 (front) (bank 2) harness clamp. Make sure that crankshaft position sensor (POS) and heated oxygen sensor 1 (front) (bank 2) harness clamp are installed correctly as shown in figure.
9. Install front exhaust tube and its support.
10. Install oil strainer.
11. Install steel oil pan. Use a scraper to remove old liquid gasket from mating surfaces. Also remove old liquid gasket from mating surface of aluminum oil pan. Apply a continuous bead of liquid gasket to mating surface of steel oil pan. Use Genuine RTV silicone sealant or equivalent. Refer to «RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS»(ref-180422-S02321372872005072600000) . Be sure liquid gasket is 4.5 to 5.5 mm (0.177 to 0.217 in) wide. Attaching should be done within 5 minutes after coating. Install steel oil pan. Tighten in numerical order shown in the figure. Wait at least 30 minutes before refilling engine oil.

Scheme 89

Replacement

Scheme 90

Scheme 91

Scheme 92

Scheme 93

Scheme 94

1. Remove ornament cover.
2. Remove RH and LH ignition coils.
3. Remove intake manifold collector supports and intake manifold collector (RH cylinder head only).
4. Remove RH and LH rocker covers from cylinder head.
5. Remove crankshaft position sensor (POS).
6. Remove oil pan. Refer to " «REMOVAL»(ref-231092-S09925334392006050300000) ", .
7. Remove timing chain. Refer to " «REMOVAL»(ref-231092-S20204240222006050300000) ", .
8. Remove camshaft brackets and camshaft. Refer to " «DISASSEMBLY»(ref-231092-S35269155382006050300000) ", .
9. Remove valve lifters.
10. Remove valve spring with Tool.
11. Reinstall any parts removed in reverse order of removal. Before removing valve spring, fix valve as follows. Method A: Piston concerned should be set at TDC to prevent valve from falling. Method B: Remove spark plug, then install air hose adapter into spark plug hole and apply air pressure to hold valves in place. Apply a pressure of 490 kPa (5 kg/cm 2 , 71 psi). Method C: Install spark plug with suitable washer into spark plug hole from combustion chamber side.
12. Remove valve oil seal.
13. Apply engine oil to new valve oil seal and install it with Tool.

Scheme 95

Scheme 96

1. Remove the following parts: Engine undercover Front RH wheel and engine side cover Drive belts Crankshaft pulley Be careful not to damage sensor edge.
2. Remove front oil seal using a suitable tool. Be careful not to scratch front cover.
3. Apply engine oil to new oil seal and install it using a suitable tool. Install new oil seal in the direction shown in the figure.

Scheme 97

Scheme 98

Scheme 99

1. Remove transaxle. Refer to «REMOVAL & INSTALLATION»(ref-230079-S34734664092006042600000) .
2. Remove flywheel or drive plate.
3. Remove oil pan. Refer to «OIL PAN»(ref-231092-S33799809542006050300000) .
4. Remove rear oil seal retainer.
5. Remove old liquid gasket on mating surface of cylinder block and oil pan using scraper. Remove old liquid gasket from the bolt hole and thread.
6. Apply liquid gasket to rear oil seal retainer. Use Genuine RTV Silicone Sealant or equivalent. Refer to «RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS»(ref-180422-S02321372872005072600000) . Assembly should be done within 5 minutes after coating. Wait at least 30 minutes before refilling engine oil and engine coolant.

Scheme 100

Scheme 101

Scheme 102

Scheme 103

Scheme 104

Scheme 105

Scheme 106

Scheme 107

Scheme 108

Scheme 109

Scheme 110

Scheme 111

Scheme 112

1. Remove engine from vehicle. Refer to , " «REMOVAL AND INSTALLATION»(ref-231092-S26576899972006050300000) ".
2. Remove exhaust manifolds.
3. Place engine on a work stand.
4. Remove aluminum oil pan. Refer to , " «REMOVAL»(ref-231092-S09925334392006050300000) ".
5. Remove timing chain. Refer to , " «REMOVAL»(ref-231092-S20204240222006050300000) ".
6. Remove intake manifold in reverse order of installation. Refer to " «TIGHTENING PROCEDURES»(ref-231092-S21106643642006050300000) ", .
7. Remove water outlet.
8. Remove rear timing chain case bolts. Loosen in reverse order as shown in the figure.
9. Remove rear timing chain case.
10. Remove O-rings from cylinder head.
11. Remove O-rings from cylinder block.
12. Remove intake valve timing control solenoid valves.
13. Remove intake and exhaust camshafts and camshaft brackets. Equally loosen camshaft bracket bolts in several steps in the numerical order shown in the figure. For reinstallation, be sure to put marks on camshaft bracket before removal.
14. Remove RH and LH camshaft chain tensioners from cylinder head.
15. Remove cylinder head bolts. Cylinder head bolts should be loosened in two or three steps. A warped or cracked cylinder head could result from removing in incorrect order.
16. Remove cylinder head.

INSTALLATION

Installation is in the reverse order of removal. Install the electronically - controlled engine mount harness to match the following values. (Models with electronically-controlled engine mounts)

Length between A and B

170 mm (6.69 in)

Length between C and D

130 mm (5.12 in)

Scheme 113

Scheme 114

Scheme 115

Scheme 116

Scheme 117

Scheme 118

Scheme 119

1. Remove engine. Refer to " «REMOVAL AND INSTALLATION»(ref-231092-S26576899972006050300000) ", .
2. Place engine on a work stand.
3. Drain coolant and oil.
4. Remove oil pan. Refer to " «REMOVAL»(ref-231092-S09925334392006050300000) ", .
5. Remove timing chain. Refer to " «REMOVAL»(ref-231092-S20204240222006050300000) ", .
6. Remove cylinder head. Refer to " «REMOVAL»(ref-231092-S27872559412006050300000) ", .
7. Remove pistons with connecting rods. When disassembling piston and connecting rod, remove snap ring first, then heat piston to 60 to 70°C (140 to 158°F).
8. Remove rear oil seal retainer. CAUTION: When piston rings are not replaced, make sure that piston rings are mounted in their original positions. When replacing piston rings, if there is no punchmark, install with either side up.
9. Loosen bolts in numerical order as shown and remove main bearing beam, bearing cap and crankshaft. Before removing bearing beam and bearing cap, measure crankshaft end play. Refer to «OIL JET»(ref-231092-S03119320682006050300000) . Bolts should be loosened in two or three steps.
10. Remove oil jets.

Scheme 120

Scheme 121

1. Measure inner diameter of piston pin hole "dp". Standard diameter "dp": Grade No. 0 21.993 - 21.999 mm (0.8659 - 0.8661 in) Grade No. 1 21.999 - 22.005 mm (0.8661 - 0.8663 in)
2. Measure outer diameter of piston pin "Dp". Standard diameter "Dp": Grade No. 0 21.989 - 21.995 mm (0.8657 - 0.8659 in) Grade No. 1 21.995 - 22.001 mm (0.8659 - 0.8662 in)
3. Calculate interference fit of piston pin to piston. Dp - dp = 0.002 - 0.006 mm (0.0001 - 0.0002 in) If it exceeds the above value, replace piston assembly with pin.