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Checking and machining dimensions for valve seats - AR05.30-P-4510-01VT

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TEST VALUES FOR VALVE SEAT RINGS

Number Designation Engine 113.989 Engine 113.960/961/962/963/964/965/967/968/971/980/981/982/984/987/988/990/991/992/993/995
BE05.30-P-1009-03C Inlet valve/exhaust valve seat   Width mm 0.80...1.2 0.80...1.2
  Angle (α) ∠° 45(+ 30') 45(+ 30')
Correction Angle (β) ∠° 35 (± 15') 35 (± 15')
Correction Angle (γ) ∠° 58 (± 15') 58 (± 15')

Shown on exhaust valve seat ring 

Fig 1: Identifying Valve Seats Machining Dimensions - Shown On Exhaust Valve Seat Ring
G05027067Courtesy of MERCEDES-BENZ OF NORTH AMERICA.