350SDL (126.135) L6-3.5L DSL Turbo (603.970) (1990)
12 Peen crush slot nut or double hex. collar nut with a peening tool into one of the two grooves of drive pinion in such a manner that no gap shows up
between groove and locking tab.
Attention! Blows should not be too heavy.
Dimensions for peening tool: "a" = approx. 8 mm; "b" = approx. 4 mm