Installation Infiniti M45 II

Installation

1. Install in the reverse order of removal.

Scheme 120

1. Remove air duct (inlet) when inspecting drive belt for alternator, water pump and A/C compressor.
2. Remove engine undercover (with power tool) when inspecting power steering oil pump belt.
3. Make sure that indicator (single line notch) of each auto tensioner is within the allowable working range (between three line notches). NOTE: Check the auto tensioner indication when engine is cold. When the new drive belt is installed, the range should be A. The indicator notch is located on the moving side of auto tensioner for alternator, water pump and A/C compressor belt, while it is found on the fixed side for power steering oil pump belt.
4. Visually check entire belt for wear, damage or cracks.
5. If the indicator is out of allowable working range or belt is damaged, replace the belt.

Install in the reverse order of removal paying attention to the following.

1. Unlock auto tensioner pulley arm to give tension to belt.
2. Rotate crankshaft pulley several turns clockwise to equalize belt tension between pulleys.
3. Check that belt tension is within the allowable working range, using indicator notch on auto tensioner. Refer to «CHECKING DRIVE BELTS»(ref-159010-S03876560872005032300000) .

Scheme 121

1. Remove air duct (inlet). Refer to «AIR CLEANER AND AIR DUCT»(ref-159010-S06177113492005032300000) .
2. Remove engine undercover (with power tool).
3. Remove drive belts. Refer to «REMOVAL AND INSTALLATION»(ref-159010-S30755208842005032300000) . Keep auto tensioner pulley arm locked after belt is removed.
4. Remove auto tensioner and idler pulley with power tool. Keep auto tensioner pulley arm locked to install or remove auto tensioner.

Install in the reverse order of removal.

Scheme 122

1. Remove engine cover (with power tool). Refer to «ENGINE ROOM COVER»(ref-159010-S24478988662005032300000) .
2. Disconnect harness connector from mass air flow sensor.
3. Remove air duct (inlet), air cleaner case and mass air flow sensor assembly disconnecting their joints. Add marks as necessary for easier installation.
4. Remove mass air flow sensor from air cleaner case. CAUTION: Handle mass air flow sensor with following cares. Do not shock it. Do not disassemble it. Do not touch its sensor.

Note the following, and install in the reverse order of removal.

1. Align marks. Attach each joint. Screw clamps firmly.

1. Unfasten two clips and lift up air cleaner filter along with holder.
2. Remove air cleaner filter from holder.

Install in the reverse order of removal.

Scheme 123

Scheme 124

Scheme 125

1. Remove engine cover (with power tool). Refer to «REMOVAL AND INSTALLATION»(ref-159010-S38119701512005032300000) .
2. Release fuel pressure. Refer to «FUEL PRESSURE RELEASE»(ref-173766-S34645699222005032200000) .
3. Remove air cleaner case and air duct assembly. Refer to «REMOVAL AND INSTALLATION»(ref-159010-S29934989162005032300000) .
4. Drain engine coolant when engine is cooled. Refer to «CHANGING ENGINE COOLANT»(ref-172473-S23598045732005022800000) .
5. Disconnect fuel tube quick connector on engine side. Refer to «FUEL INJECTOR AND FUEL TUBE»(ref-159010-S06407600942005032300000) .
6. Remove accelerator wire from throttle drum.
7. Move cooling fan fluid reservoir tank. Refer to «COOLING FAN»(ref-172473-S08022088772005022800000) .
8. Remove or disconnect intake manifold upper, wiring harnesses, brackets, vacuum hose, vacuum gallery and PCV hose and tube.
9. Remove electric throttle control actuator and intake manifold adapter loosening fixing bolts diagonally. CAUTION: Handle carefully to avoid any shock to the electric throttle control actuator. Do not disassemble.
10. Disconnect water hoses.
11. Loosen bolts in reverse order of illustration to remove intake manifold upper with power tool.
12. Remove fuel injectors and fuel tube (left and right). Refer to «REMOVAL AND INSTALLATION»(ref-159010-S41367070862005032300000) .
13. Loosen bolts in reverse order of illustration to remove intake manifold lower with power tool. CAUTION: Cover engine openings to avoid entry of foreign materials.
14. Remove intake manifold gaskets.

Scheme 126

1. Using straightedge and feeler gauge, inspect surface distortion of intake manifold lower and intake manifold upper. Standard: 0.1 mm (0.004 in)
2. If it exceeds the limit, replace intake manifold lower or intake manifold upper.

1. Note the following, and install in the reverse order of removal.

Scheme 127

1. Tighten in numerical order as shown in the figure. NOTE: No. 7 and 8 have longer bolt length than others.

Scheme 128

1. Tighten in numerical order as shown in the figure. NOTE: No. 4 to 7 have longer bolt length than others.