Tightening specification for cylinder head bolts - AR01.30-P-5800-07M

CYLINDER HEAD

Number	Designation			Engine 275
BA01.30-P-1004-01G	Internal torx bolt of cylinder head to crankcase	1st stage	NM	40
		2nd stage	°∠	90
		Step 3	°∠	90

Fig 1: Identifying Screwdriver Insert (000 589 03 10 00)

Courtesy of MERCEDES-BENZ USA

Fig 2: Identifying Screwdriver Insert (000 589 04 10 00)

Courtesy of MERCEDES-BENZ USA

Tightening pattern/bolt assignment

Fig 3: Identifying Tightening Pattern/Bolt Assignment Of Cylinder Head Bolts

Courtesy of MERCEDES-BENZ USA

Tightening instructions for right and left cylinder head

Use wrench bit to tighten cylinder head bolts.
Observe sequence, see tightening pattern.

If the tightening torque was exceeded at a cylinder head bolt, unscrew the cylinder head bolt, check shank length (replace cylinder head bolt if necessary) and tighten fully beginning with stage 1.

Cylinder head bolts are not retightened.