Fastener Tightening Specifications

Fastener Tightening Specifications








Cylinder Head Cover Bolt Tightening Sequence and Specification
- Tighten the cylinder head cover bolts in sequence - 1 through 17 - to 10 Nm





Cylinder Head Bolt Tightening Sequence and Specifications
- Tighten cylinder head bolts in specified sequence, starting from inside and working toward outside, as follows:
- Pre tighten all the bolts to 15 Nm.
- Then tighten all the bolts to 30 Nm.
- Tighten all bolts (1/2 turn) (180 degree) further.

Replace cylinder head bolts.

Cylinder Head Distortion
Max. permissible distortion 0.05 mm

Camshaft Bearing Cap Tightening Sequence and Specification





A - Intake Camshaft
- Tighten bearing caps 5 and 9 alternating in diagonal sequence and tighten to 5 Nm + 1/8 additional turn (45 degree).
- Install bearing caps 1 and 13 and tighten to 5 Nm and 1/8 turn (45 degree).
- Install bearing cap 7 and tighten to 5 Nm and 1/8 turn (45 degree).
- Install bearing caps 3 and 11 and likewise tighten to 5 Nm and 1/8 turn (45 degree).

B - Exhaust Camshaft
- Tighten bearing caps 6 and 10 alternating in diagonal sequence and tighten to 5 Nm + 1/8 additional turn (45 degree).
- Install bearing caps 2 and 14 and tighten to 5 Nm and 1/8 turn (45 degree).
- Install bearing cap 8 and tighten to 5 Nm and 1/8 turn (45 degree).
- Install bearing caps 4 and 12 and likewise tighten to 5 Nm and 1/8 turn (45 degree).

Intake and exhaust camshaft adjusters
Tighten 60 Nm + 1/4 turn (90 degree)