Front crankshaft radial seal with reduced radial pressure stress - BT03.20-P-0002-01A

ENGINE 602, 604, 605, 606

ENGINE 602.982 as of 1.7.97 in MODEL 210

ENGINE 604.910 as of 1.7.97 in MODEL 202

ENGINE 604.912 as of 1.7.97 in MODEL 210

ENGINE 604.915 as of 1.7.97 in MODEL 202

ENGINE 604.917 as of 1.7.97 in MODEL 210

ENGINE 605.912 as of 1.7.97 in MODEL 210

ENGINE 605.960 as of 1.7.97 in MODEL 202

ENGINE 605.962 as of 1.7.97 in MODEL 210

ENGINE 606.961 as of 1.7.97 in MODEL 140

ENGINE 606.962 as of 1.7.97 in MODEL 210

Modification notes

22.9.99

Supersedes SI03/51 dated 12.9.97

Remove SI03/51 from your file

Fig 1: Identifying Insertion Tool (611 589 00 14 00)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Modified crankshaft radial seal and vibration damper

Since 07/97 crankshaft radial seals (1) with PTFE sealing lips (Teflon coating) have been installed at the front crankshaft of these engines. The vibration dampers have a non-hardened running surface (2) for the radial seal in future. The production breakpoint will be set at a later date. The crankshaft radial seals have a reduced radial pressure stress compared to the previous seals.

Fig 2: Locating Crankshaft Radial Seals And Vibration Dampers

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Repair note

The modified crankshaft radial seals can also be fitted to the engines listed below with hardened hub contact surfaces.

On no account, may the previous crankshaft radial seals with a conventional sealing edge be fitted to engines with non-hardened hub contact surfaces as this combination will immediately result in leakages at the engine.

The modified vibration dampers are recognizable from the raised part no. on the rear.

In view of the reduced wear of the contact surfaces, it is no longer necessary to install the crankshaft radial seal offset to the rear.

A new insertion tool, which replaces the previous tool, is required in order to avoid damage in the sealing lip when installing the seal. Do not apply pressure to the sealing lip of the radial seal.

Designation	Engine	Marking
Vibration damper	602.982	602 030 19 03
	604	not yet defined
	605.91	602.030 19 03
	605.96	605 030 05 03
	606.91	606 030 03 03
	606.96	606 030 04 03

After stocks of the previous crankshaft radial seals have been used up, only the modified version will be supplied in future.

Replacement parts

Designation	Engine	Part no.
Radial shaft seal	602.930, 602.942, 602.961, 602.962, 602.982, 603.960, 603.963, 603.971, 603.972, 604, 605, 606	021 997 18 47 or 021 997 76 47

ENGINE 111 as of 1.5.95, 604 as of 1.11.95, 605, 606 as of 1.5.95