601 589 01 40 00 Retaining device - WS35.00-N-3147C

FG 35/Set C 

REAR AXLE 741.1 /13 /2 /4 /5 /6, 745.6, 742.6 

Use: 

Retainer for checking the contact pattern under load.

Fig 1: Checking Contact Pattern Under Load

Courtesy of MERCEDES-BENZ USA

Fig 2: Identifying Retaining Device (601 589 01 40 00)

Courtesy of MERCEDES-BENZ USA