Checking the valve spring (Mercedes-Benz Vario 814)

1. Install the spring in the test stand (figure 2.26).

2. Check the maximum compression of the spring. The dimensions of the valve spring are given in Table 2.2.

Table 2.2. Valve spring dimensions

Parameters	Engines 602.984/985
Normal valve spring length, mm	50.0
Length in compressed state, mm	27
Outer diameter of spring, mm	33.1
Inner diameter of spring, mm	4.20