Tightening instructions for cylinder head bolts - AR01.30-P-5800-07B
| Number | Designation | Engines 112.910/911/ 912/913/914/ 915/916/917/ 920/921/922/ 923/940/941/ 942/943/944/ 945/946/947/ 949/951/953/ 954/955/960/ 961/970/972/ 973/975/976 | Engines 113.940/941/ 942/943/944/ 948/960/961/ 962/963/965/ 966/967/968/ 969/971/980/ 981/982/984/ 986 | Engine 113.987/ 988 | Engine 113.987/ 991/992/ 993/995 | ||
|---|---|---|---|---|---|---|---|
| BA01.30-P-1001-01D | Bolt, cylinder head to crankcase | Stage 1 | Nm | 10 | 10 | 10 | 10 |
| Stage 2 | Nm | 30 | 30 | 30 | 30 | ||
| Stage 3 | ∠ ° | 90 | 90 | 90 | 90 | ||
| Stage 4 | ∠ ° | 90 | 90 | 90 | 90 | ||
| Number | Designation | Engine 113.989 | Engine 113.964 | ||
|---|---|---|---|---|---|
| BA01.30-P-1001-01D | Bolt, cylinder head to crankcase | Stage 1 | Nm | 10 | 10 |
| Stage 2 | Nm | 30 | 30 | ||
| Stage 3 | ∠ ° | 90 | 90 | ||
| Stage 4 | ∠ ° | 90 | 90 | ||
Tightening pattern/bolt assignment
Left and right cylinder head M 112
1-8 Collar bolt M11
- a Combination bolts M850(to timing case cover)
- b Combination bolts M830(to timing case cover)
Tightening instructions for left and right cylinder heads M 112
Use
wrench bit to tighten cylinder head bolts.
Observe sequence, see tightening pattern.
If the tightening torque is exceeded on a cylinder head bolt, unscrew the cylinder head bolt, inspect shank length of the cylinder head bolt in question (replace bolt if necessary) and tighten again fully, beginning with stage 1.
Cylinder head bolts must not be retightened.
Tightening diagram/bolt assignment
Left and right cylinder head M 113
Tightening instructions for left and right cylinder heads M 113
Use
wrench bit to tighten cylinder head bolts.
Observe sequence, see tightening pattern.
If the tightening torque is exceeded on a cylinder head bolt, unscrew the cylinder head bolt, inspect shank length of the cylinder head bolt in question (replace bolt if necessary) and tighten again fully, beginning with stage 1.
Cylinder head bolts must not be retightened.