Tightening procedure for cylinder head bolts - AR01.30-P-5800-01SXI
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ENGINE 642 in MODEL 207, 212, 218, 221
CYLINDER HEAD
| Number | Designation | Engine 642 | |||
|---|---|---|---|---|---|
| BA01.30-P-1001-01S | Bolt, cylinder head to crankcase | M8x35 | Nm | 20 | |
| BA01.30-P-1002-01S | Bolt, cylinder head to crankcase | M12 | Stage 1 | Nm | 10 |
| Stage 2 | Nm | 60 | |||
| Stage 3 | ∠° | 90 | |||
| Stage 4 | ∠° | 90 | |||
| Stage 5 | ∠° | 90 | |||
Tightening procedure with bolt arrangement, shown on the left and right cylinder head
The order of tightening for the left and the right cylinder head given below must be followed in order to avoid any consequent damages.
- Tighten bolts M12 (10) as specified in stage 1
.
- Tighten bolts M8 (11)
- Tighten bolts M12 (10) according to Stage 2
- Retighten bolts M8 (11)
- Tighten bolts M12 (10) according to Stage 3
- Retighten bolts M8 (11)
- Tighten bolts M12 (10) according to Stage 4
- Retighten bolts M8 (11)
- Tighten bolts M12 (10M12) according to Stage 5
- Retighten bolts M8 (11)
Use the reverse order to release bolts M12 (10) and bolts M8 (11).