Cylinder Head: Removal & Installation Nissan Maxima A32

Removal

1. Release fuel system pressure. See «FUEL PRESSURE RELEASE»(ref-49459-S10341004852001011500000). Remove lower engine cover. Remove hood. Drain cooling system. Label and disconnect all electrical connectors, hoses and cables necessary for intake manifold collector removal. Remove intake manifold collectors. Remove fuel injector rail with injectors.
2. Remove cylinder head covers. Remove timing chain. See TIMING CHAIN. Remove intake manifold. Remove camshaft sprockets and camshaft chains. Remove camshaft tensioners from cylinder heads. Camshaft tensioners are located at front of cylinder heads between camshafts. Disconnect exhaust pipe from exhaust manifold.
3. Remove rear timing chain case bolts in sequence. (Scheme 3) Using Seal Cutter (J37228), separate rear timing chain case from cylinder block and cylinder heads. Remove rear timing chain case. NOTE: Mark sprockets, camshaft brackets and camshafts for reassembly reference.
4. Remove camshaft bracket bolts in sequence. (Scheme 4) Loosen bolts in 2 or 3 steps. Remove camshaft bracket bolts and brackets. Remove camshafts.
5. Remove cylinder head bolts in reverse order of tightening sequence. (Scheme 5) Loosen bolts in 2 or 3 steps. Remove cylinder head with exhaust manifold attached. If necessary, remove exhaust manifold.

Installation

1. Set cylinder No. 1 at TDC by rotating crankshaft until keyway on front of shaft is at 11 o'clock position and No. 1 piston is at top of its stroke.
2. Install cylinder head and NEW gasket. Oil cylinder head bolt threads and washers. Install cylinder head bolts and tighten in sequence to specification in 5 steps. (Scheme 5) See «TORQUE SPECIFICATIONS»(ref-49459-S26668957882001011500000).
3. Install camshafts ensuring camshaft keyways are positioned toward top surface of cylinder head. Install camshaft brackets. Tighten bracket bolts to specification in reverse order of removal. (Scheme 4) See «TORQUE SPECIFICATIONS»(ref-49459-S26668957882001011500000). To complete installation, reverse removal procedure.

Scheme 3

Scheme 4

Scheme 5

Remove engine lower cover. Remove right front wheel and side cover. Remove accessory drive belts. Remove crankshaft pulley. Pry oil seal out of front cover.

Apply engine oil to NEW seal. Drive seal into oil pump housing. To complete installation, reverse removal procedure. Tighten bolts to specification. See TORQUE SPECIFICATIONS .