Rail tightening procedure · ar0703p101006mr · Mercedes-Benz WIS

AR07.03-P-1010-06MR

Rail tightening procedure

Engine

133, 270, 274

 Fuel distributor

Number	Designation		Engine 133.980	Engine 270
BA07.52-P-1001-01H	Screw/bolt, fuel distributor to cylinder head cover	Nm	9	8

 Fuel distributor

Number	Designation		Engine 274
BA07.52-P-1001-01H	Screw/bolt, fuel distributor to cylinder head cover	Nm	8

Shown on ENGINE 270

P07.03-2344-06

ENGINE 133, 270

 Do not use any impact wrench/driver or compressed air tool to screw the screw/bolts (1 to 8) in and out.
The thread in the cylinder head cover will get damaged otherwise.

1	Operation step 1: Remove screw/bolts (1 to 8) alternately by respectively turning half a revolution from the center outwards.

 Screw in screw/bolts (1 to 8) alternately each by half a revolution. Begin in the center of the rail and work outwards.
Otherwise damage can occur to the rail.

2	Operation step 2: Tighten screw/bolts (1 to 8) as per figure in numerical sequence using the  tightening torque.

Shown on ENGINE 274

P07.03-2345-06

ENGINE 274

 Do not use any impact wrench/driver or compressed air tool to screw the screw/bolts (1 to 8) in and out.
The thread in the cylinder head cover will get damaged otherwise.

3	Operation step 1: Screw in screw/bolts (5, 4, 3, 6) in the tightening sequence using two to three revolutions the respectively.

4	Operation step 2: Tighten screw/bolts (5, 4, 3, 6) and then (8, 7, 1, 2) in the tightening sequence slightly by hand.

5	Operation step 3: Tighten screw/bolts (5, 4, 3, 6, 8, 7, 1, 2) in the tightening sequence with  tightening torque.