Tightening Torques

Tightening torques

Note:
^ Torque specifications only apply to lightly greased, oiled, phosphated or blackened nuts and bolts.
^ Additional lubricants, such as engine or transmission oil are permissible, although lubricants containing graphite are not.
^ Do not use any degreased parts.
^ Tolerance for torque specifications: ± 15 %.

Note: * Replace bolts.

Cylinder Head

Tighten NEW cylinder head bolts in sequence in 4 stages in tightening sequence as follows:

Tightening sequence cylinder bank 1 (right)

Note: Arrow points in direction of travel.

Tightening sequence cylinder bank 2 (left)

Note: Arrow points in direction of travel.

Camshaft Bearing Cap

Cylinder bank 1 (right)

Install intake camshaft - A - as follows:
1. Fasten bearing caps 3 and 11 alternately and diagonally and then tighten to specified torque.
2. Fasten bearing cap 7.
3. Fasten bearing caps 5 and 9.
4. Fasten bearing caps 1 and 13.

Install exhaust camshaft - B - as follows:
1. Fasten bearing caps 4 and 12 alternately and diagonally and then tighten to specified torque.
2. Fasten bearing cap 8.
3. Fasten bearing caps 6 and 10.
4. Fasten bearing caps 2 and 14.

Cylinder bank 2 (left)

Install intake camshaft - A - as follows:
1. Fasten bearing caps 23 and 31 alternately and diagonally and then tighten to specified torque.
2. Fasten bearing cap 27.
3. Fasten bearing caps 25 and 29.
4. Fasten bearing caps 21 and 33.

Install exhaust camshaft - B - as follows:
1. Fasten bearing caps 24 and 32 alternately and diagonally and then tighten to specified torque.
2. Fasten bearing cap 28.
3. Fasten bearing caps 26 and 30.
4. Fasten bearing caps 22 and 34.

- Install control housings for camshaft adjustment.
- Install camshaft adjusters.

CAUTION: Camshaft and crankshaft must not be rotated when the timing drive is disassembled.

- Before continuing assembly, verify TDC position of camshafts.