Engine timing, valves,  OM617

Checking valve springs

 

 
05—260 Checking valve springs

 
Valve spring data

 
Part No.
Color code
OD mm
Wire dia. mm
Length unloaded mm
Spring length
force at preloaded When new N
Limit value N
180 053 06 20
green or purple
30.2
3.8
50.5
29.9
463-530
417
615 053 01 201)
yellow-yellow or purple-yellow
30.4
3.9
51.2
28.0
589
530

 
l) Valve spring of engine 617.950 (usa) model year 1980 with increased output and of engines 617.951/952.

 
Checking
om617 - 0178-1.jpg
R 05/6385
1    Check valve springs with a valve spring tester or a spring testing scale.
2   Check spring force at specified length.
3    Renew valve springs if below limit value.

 
05.8-260/1 F 2