Measure vertical clearance of piston rings · ar0310t731101a · Mercedes-Benz WIS

AR03.10-T-7311-01A

Measure vertical clearance of piston rings

Test and adjustment values for pistons/piston rings

Number	Designation			Engine 447	Engine 489


BE03.10-N-1002-05F	Piston ring vertical clearance	6° half-keystone ring, new	mm	0.15 to 0.20	0.15 to 0.20
		Taper-faced hook scraper ring	mm	0.05 to 0.10	0.05 to 0.10
		Taper-faced ring	mm	0.05 to 0.10	0.05 to 0.10
		Bevel-edge ring with garter spring	mm	0.03 to 0.07	0.03 to 0.07
		Keystone ring	mm	-	-

Check values for piston rings

Number	Designation			Engine 457.941/942	Engine 457.944


BE03.10-N-1002-05H	Piston ring vertical clearance	Taper-faced ring	mm	0.07 to 0.105	0.07 to 0.105
		Bevel-edge ring with garter spring	mm	0.03 to 0.065	0.03 to 0.065
		Keystone ring	mm	0.047 to 0.102	0.047 to 0.102

S03.10-3005-01

1 Measure side clearance of pistons rings between piston ring and groove in the piston using a feeler gauge.

 Press piston ring into radial groove.