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Remove, install piston rings - AR03.10-P-7311VA

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ENGINE 272, 273 

Piston removed 

Fig 1: Piston Rings Remove/Install Components
G09974079Courtesy of MERCEDES-BENZ USA
REMOVING Removing     
1 Using pliers, remove compression rings (1, 2) from SPECIAL TOOL piston (4) SPECIAL TOOL Pliers Figure
2 Remove oil scraper ring (3) from piston (4) IMPORTANT The oil scraper ring (3) is in three parts, and must be removed by hand.  
INSTALLING Install     
3 Measure the width of the compression rings (1, 2)   *BE03.10-P-1003-05D 
4 Measure the end gap of compression rings (1, 2)   AR03.10-P-7311-02VA 
*BE03.10-P-1002-05D 
5 Using the pliers, fit the compression rings (1, 2) to SPECIAL TOOL piston (4) IMPORTANT Note the installation position of compression rings (1, 2). The "Top" marking or manufacturer's designation must face towards the piston crown (5).
SPECIAL TOOL Pliers
 
6 Measure the vertical clearance of compression rings (1, 2)   AR03.10-P-7311-01VA 
*BE03.10-P-1001-05D 
7 Fit the oil scraper ring (3) by hand    
TEST VALUES FOR PISTON RINGS

Number Designation Engine 272.91/92/94/95 Engine 272.96/97/98/99
BE03.10-P-1001-05D Piston ring vertical clearance Groove 1 mm 0.03...0.08 0.02 to 0.07
Groove 2 mm 0.02...0.06 0.015 to 0.05
Groove 3 mm - -
BE03.10-P-1002-05D Piston ring end gap Groove 1 mm 0.2 to 0.35 0.2 to 0.35
Groove 2 mm 0.3...0.5 0.3...0.5
Groove 3 mm 0.2...0.9 0.2...0.9
BE03.10-P-1003-05D Dimension Plain compression ring mm 88.0X1.5X3.1 92.9X1.5X3.1
Taper-faced hook scraper ring mm 88.0X1.75X3.5 92.9X1.75X3.7
Oil scraper ring mm 88.0X2.5X3.03 92.9X2.5X3.03
TEST VALUES FOR PISTON RINGS

Number Designation Engine 273.92 Engine 273.96/97
BE03.10-P-1001-05D Piston ring vertical clearance Groove 1 mm 0.02 to 0.07 0.02 to 0.07
Groove 2 mm 0.015 to 0.05 0.002 to 0.06
Groove 3 mm - -
BE03.10-P-1002-05D Piston ring end gap Groove 1 mm 0.2 to 0.35 0.2 to 0.35
Groove 2 mm 0.3...0.5 0.3...0.5
Groove 3 mm 0.2...0.9 0.2...0.9
BE03.10-P-1003-05D Dimension Plain compression ring mm 92.9X1.5X3.1 98.0X1.2X3.1
Taper-faced hook scraper ring mm 92.9X1.75X3.7 98.0X1.5X3.7
Oil scraper ring mm 92.9X2.5X3.03 98.0X2.5X3.03
Fig 2: Identifying Pliers (000 589 51 37 00)
G09974080Courtesy of MERCEDES-BENZ USA