Disassembly and Assembly: Assembly

Replace with oversized [0.2 mm (0.008 in)] valve guide (EXH).

1. Using the valve guide reamer (commercial service tool) (A), ream cylinder head valve guide (EXH) hole.

   Oversize (service) [0.2 mm (0.008 in)]: 

   : Refer to  "CYLINDER HEAD ".

   Fig 1: Reaming Cylinder Head Valve Guide (EXH) Hole Using Valve Guide Reamer

   Courtesy of NISSAN NORTH AMERICA, INC.
2. Heat cylinder head to 110 to 130°C (230 to 266°F) by soaking in heated oil (A).
   Fig 2: Heating Cylinder Head In Heated Oil

   Courtesy of NISSAN NORTH AMERICA, INC.
3. Using the valve guide drift (commercial service tool), press valve guide (EXH) from camshaft side to the dimensions as shown in the figure below.
   Fig 3: Identifying Valve Guide (EXH) Dimension

   Courtesy of NISSAN NORTH AMERICA, INC.

   Projection (A): Refer to  "CYLINDER HEAD ".

   WARNING: Cylinder head contains heat. When working, wear protective equipment to avoid getting burned.
4. Using the valve guide reamer (commercial service tool) (A), apply reamer finish to valve guide (EXH).

   Standard: Refer to  "CYLINDER HEAD ".

   Fig 4: Reaming Cylinder Head Valve Guide (EXH) Hole Using Valve Guide Reamer

   Courtesy of NISSAN NORTH AMERICA, INC.

1. Ream cylinder head recess diameter (a) for service valve seat (EXH).

   Oversize (service) [0.5 mm (0.020 in)]: 

   : Refer to  "CYLINDER HEAD ".

   • Be sure to ream in circles concentric to valve guide center.

     This will enable valve to fit correctly.

     Fig 5: Identifying Cylinder Head Recess Diameter

     Courtesy of NISSAN NORTH AMERICA, INC.
2. Heat cylinder head to 110 to 130°C (230 to 266°F) by soaking in heated oil (A).
   Fig 6: Heating Cylinder Head In Heated Oil

   Courtesy of NISSAN NORTH AMERICA, INC.
3. Provide valve seats (EXH) cooled well with dry ice. Force fit valve seat (EXH) into cylinder head.
   WARNING: Cylinder head contains heat. When working, wear protective equipment to avoid getting burned.
   CAUTION: Avoid directly touching cold valve seats.
4. Using the valve seat cutter set (commercial service tool) or valve seat grinder, finish seat to the specified dimensions. Refer to "CYLINDER HEAD ".
   CAUTION: When using the valve seat cutter, firmly grip cutter handle with both hands. Then, press on the contacting surface all around the circumference to cut in a single drive. Improper pressure on cutter or cutting many different times may result in staged valve seat.
   Fig 7: Finishing Valve Seat Using Valve Seat Cutter

   Courtesy of NISSAN NORTH AMERICA, INC.
5. Using compound, grind to adjust valve fitting.
6. Check again for normal contact. Refer to "VALVE SEAT CONTACT ".

1. Apply new engine oil on new valve oil seal joint and seal lip.
2. Using the valve oil seal drift [SST: KV10115600 (J-38958)] (A), press fit valve seal to height (b) shown in figure below.
   NOTE: Dimension: Height measured before valve spring seat installation

   Height (b): 14.3 - 14.9 mm (0.563 - 0.587 in) 

   Fig 8: Installing Valve Oil Seal Using Drift

   Courtesy of NISSAN NORTH AMERICA, INC.

• Crankshaft key should line up with the cylinder center line (bank 1) as shown in the figure below.

Fig 9: Identifying Crankshaft Key Position

Courtesy of NISSAN NORTH AMERICA, INC.

Fig 10: Cylinder Head Mounting Bolts Tightening Sequence

Courtesy of NISSAN NORTH AMERICA, INC.

• Use the cylinder head bolt wrench [commercial service tool:

  - (J-24239-01)] and power tool.

1. Apply new engine oil to threads and seat surfaces of cylinder head bolts.
2. Tighten all cylinder head bolts.

   Torque Value: 105 N.m (11 kg-m, 77 ft-lb) 

3. Completely loosen all cylinder head bolts.

   Torque Value: 0 N.m (0 kg-m, 0 ft-lb) 

   CAUTION: In step "c", loosen bolts in the reverse order of that indicated in the figure.
4. Tighten all cylinder head bolts.

   Torque Value: 40.0 N.m (4.1 kg-m, 30 ft-lb) 

5. Turn all cylinder head bolts 95 degrees clockwise (angle tightening).
   CAUTION: Check the tightening angle using the angle wrench [SST: KV10112100 (BT8653-A)] (A). Never make judgment by visual inspection.
   Fig 11: Checking Tightening Angle Using Angle Wrench

   Courtesy of NISSAN NORTH AMERICA, INC.
   • Check tightening angle indicated on the angle wrench indicator plate.
6. Turn all cylinder head bolts 95 degrees clockwise again (angle tightening).

Standard: 14.1 - 14.9 mm (0.555 - 0.587 in) 

• If measured value is out of the standard, re-install cylinder head.
  Fig 12: Measuring Distance Between Front End Faces Of Cylinder Block And Cylinder Head Using Tool

  Courtesy of NISSAN NORTH AMERICA, INC.

• Install narrow pitch (B) end [paint mark (C)] to cylinder head side (valve spring seat side).
  Fig 13: Identifying Valve Spring Pitch And Paint Mark

  Courtesy of NISSAN NORTH AMERICA, INC.

  Paint mark color 

  Intake: Purple 

  Exhaust: Yellowish green 

• Compress valve spring with the valve spring compressor [SST:

  KV10116200 (J-26336-A)] (A), the attachment [SST:

  KV10115900 (J-26336-20)] (C) and the adapter [SST:

  KV10109220 (-)] (B). Install valve collet with a magnet hand.

  CAUTION: When working, take care not to damage valve lifter holes.
• Tap valve stem edge lightly with plastic hammer after installation to check its installed condition.
  Fig 14: Compressing Valve Spring Using Valve Spring Compressor

  Courtesy of NISSAN NORTH AMERICA, INC.

• Install it in the original position.