Remove/install piston rings - AR03.10-P-7311BV

ENGINE 113 in MODELS 129, 163, 202, 203, 208, 209, 210, 211, 215, 220, 230

ENGINE 112 /945, 113.962 /982

Fig 1: Identifying Piston Rings

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Figure item, etc.	Work instructions
4	Piston removal and installation		AR03.10-P-7021AV
1,2,3	Piston rings Pliers	remove	Fig 2
Removal:	Oil scraper ring	with the pliers. The oil scraper ring (3) must be removed and installed by hand.
Installation:	Compression rings	Measure width of compression rings (1, 2). Note the installation position of compression rings (1,2). The inscription "Top" or the manufacturer's designation must point toward the piston crown (5).	*BE03.10-P-1003-05B
1,2	Measure the side clearance of the compression rings		AR03.10-P-7311-01V
1,2	Measure end gap of the compression rings		AR03.10-P-7311-02V

Check values for piston rings

Number	Designation			Engine 112.910/ 911/912	Engine 112.913	Engine 112.920/ 921/922/923/ 940/941/942/ 943/944/945/ 946/947/948/ 960, Engine 113.940/941/ 942/943
BE03.10-P-1003-05B	Dimension	Plain compression ring	mm	83.2x1.5x3.1	89.9x1.5x3.1	89.9x1.5x3.1
BE03.10-P-1003-05B	Dimension	Taper-faced hook scraper ring	mm	83.23.53.589.91.753.5	89.9x1.75x3.5	89.9x3.5x3.5

Check values for piston rings

Number	Designation			Engine 112.949
BE03.10-P-1003-05B	Dimension	Plain compression ring	mm	89.91.53.1
BE03.10-P-1003-05B	Dimension	Taper-faced hook scraper ring	mm	89.91.753.5

Check values for piston rings

Number	Designation			Engines 113.944/980/ 981/982/984	Engines 113.960/961/ 962/963/964/ 965/968/971	Engine 113.960/961/ 992/995
BE03.10-P-1003-05B	Dimension	Plain compression ring	mm	97.0x1.2x3.5	97.0x1.5x3.1	97.0x1.2x3.5
BE03.10-P-1003-05B	Dimension	Taper-faced hook scraper ring	mm	97.01.54.0	97.0x3.5x3.5	97.0x1.75x3.5

Fig 2: Identifying Pliers (000 589 51 37 00)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.