ar1330w601001ca

Tighten cylinder head bolts on compressor

Type ar · emne 13.30 · version 0200 · 2010-07-05

Gælder for: ENGINE 457.9 with CODE (MZ8) Engageable dual compressor

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Placering

Funktionsgruppe 1 Motor › 13 Kompressor, remtræk › 13.30 Kompressor (trykluftsystem)

EinPAS 21 bremser/vakuumsystem/trykluftsystem › 21.35 trykluftsystem › 21.35.35 Kompressor

Gælder også for motorer/gearkasser: 457 9**

AR13.30-W-6010-01CA

Tighten cylinder head bolts on compressor

Modification notes

11.5.10

Work procedure completely revised.

Note: If the compressor cylinder head was replaced, bolts (7, 8) must be loosened before tightening since these are not tightened as specified in the delivery condition and leaks can occur; inserted.

Operation step 3

Compressor (compressed air system)

Number

Designation

Engine
457.9 with code MZ8

BA13.30-N-1007-01L

Bolt, cylinder head to compressor crankcase

Stage 1

Nm

25

Stage 2

°

90

BA13.30-N-1009-01L

Bolt, cylinder head cover to valve intermediate plate

Stage 1

Nm

7

Stage 2

°

90

Tighten cylinder head bolts on compressor

W13.30-1132-11

Observe the sequence shown when tightening in order to achieve even pressing down of the intake valve disk/seal.

1 Lay on cylinder head bolts (1 to 6) and then tighten to stage 1 of the sequence shown .

2 Then tighten cylinder head bolts (1 to 6) to Stage 2 of the sequence shown .

3 Tighten cylinder head cover bolt to the valve intermediate plate (7, 8) to Stage 1 of the tightening sequence shown .

Only if the compressor cylinder head was disassembled or replaced.

If the compressor cylinder head was replaced, bolts (7, 8) must be loosened before tightening since these are not tightened as specified in the delivery condition and leaks can occur.

4 Tighten cylinder head cover bolt to the valve intermediate plate (7, 8) to Stage 2 of the tightening sequence shown .

Only if the compressor cylinder head was disassembled or replaced.