Repairing spark plug thread - AR01.30-P-5440BV

ENGINE 112 

ENGINE 112.945 in MODEL 463.209 /232 /233 /244 /245 /250 

ENGINE 113.962 in MODEL 463.206 /240 /241 /247 /248 /249 /254 

ENGINE 113.982 in MODEL 463.243/246 

ENGINE 113 (except 113.995) in MODEL 129, 163, 202, 203, 208, 209, 210, 211, 215, 220, 230 

Fig 1: Identifying Tapped Hole Device

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

	Remove, Install
1	Remove cylinder head cover	Air cleaner located at vehicle side. Air cleaner located at engine side.	AR01.20-P-5014B  AR01.20-P-5014BV
2	Remove spark plugs
		Model 463.206/209/ 232/233/240/241/243/244/245/ 246/247/248/249 /250/254	AP15.10-P-1580GA
		Model 220, 230.474/475, 211.061/065/070	AP15.10-P-1580AB
		Model 170, 202, 203, 208, 209, 210	AP15.10-P-1580A
		Model 129	AP15.10-P-1580AC
		Model Series 163	AP15.10-P-1580GH
3	Position piston of relevant cylinder to 20° - 30° before TDC	Inlet valve and exhaust valve of the relevant cylinder must be closed.
4	Remove cylinder head	Model 230.474 with Engine 113.992 replace cylinder head if spark plug thread is faulty. It is then only necessary to remove the cylinder head if it is not possible to insert the thread tap unit into the spark plug thread for space reasons!
		Model 463.206 /209 /232 /233 /240 /241 /243 /244 /245 /246 /247 /248 /249 /250 /254.	AR01.30-P-5800GV
		Model 202, 208, 210 with Engine 113 and Model 129 with Engine 112, 113	AR01.30-P-5800B
		Model 220 with Engine 112, 113 and Model 210, 170, 202, 208 with Engine 112, 230.474/475	AR01.30-P-5800BA
		Model 203, 209, 211.061/065 /070	AR01.30-P-5800PV
		Model Series 163	AR01.30-P-5800MV
5	Tap thread in spark plug hole and screw in threaded insert	Pack the swarf grooves of the combination thread tap with grease for bonding the swarf. Blow out cylinder and spark plug thread with compressed air before screwing in the threaded insert.	AR01.30-P-5440-01B
			Figure
6	Crank engine with starter.	If the cylinder head was not removed, the engine must be cranked several times with the starter. All Models except Model 203, 209 Model 203, 209	AR01.10-P-0110V  AR01.10-P-0110PV
7	Caulk threaded insert		AR01.30-P-5440-02B
8	Install in the reverse order

Fig 2: Identifying Heli-Coil Repair Set (102 589 00 99 00)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.