B1CB28K1 - 406D9 DW10 ENGINE

IDENTIFICATION - DATA CYLINDER BLOCK

1 - IDENTIFICATION

Reference (A) : Area of marking (Repair 1) .

2 - DATA

Repair of the cylinder block always includes :

• reboring of the barrels
• machining the cylinder block surface

IMPERATIVE : grinding the barrel plate .

2 - 1 - OVERHAUL

(B) Nominal : 235 ± 0,05 mm .

(B) Repair : 234,8 ± 0,05 mm .

(C) Flatness .

2 - 2 - REBORING

IMPERATIVE : grinding authorised only if it is possible to accurately determine the value (D) of each cylinder (2,2 mm minimum) .

3 - GRINDING THE BARRELS

IMPERATIVE : after reboring the barrels lap them, referring to the instructions .

(E) Location of the lift rate measurement .

(F) = 115,7 mm .

(G) = 61,9 mm .

(H) = 8,3 mm .

(J) = 46,5 ± 0,2 mm .

(K) = 139,5 ± 0,2 mm .

(L) = 232,5 ± 0,2 mm .

(M) = 325,5 ± 0,2 mm .

(α) = 50° .

3 - 1 - LIFT RATE

To take the following measurements, observe the correct locations (E) .

(Y) maximum10 µ .

Measurement of lift rate :

• without mechanical or electrical filtering (measuring equipment)
• sensing distance = 16 mm
• sensor contact radius between 2 and 5 µ
• three measurements for each barrel on the driven side (opposite the oil cartridge) i.e. 12 measurements per cylinder block

Lift rate :

• two protrusions allowed, except where they are in the same barrel
• in this case, you can make additional measurements in the faulty barrel with acceptance if there is no protrusion

3 - 2 - SHAPE AND POSITION TOLERANCE

(N) = Straightness .

(O) = Conformity of cylindrical shape .

(P) = Perpendicularity .

(Q) = Ball location .

(R) = 50 mm .

3 - 3 - MEASUREMENT OF STIFFNESS

To take the following measurements, observe the correct locations (Q) .

Stiffness 207/241 HB .

Work hardening depth ≤ 8 µ .

% of graphite flakes found ≥ 20% .