SERVICE DATA AND SPECIFICATIONS (SDS) — Inspection and Adjustment (Cont'd): Valve Spring; Valve Seat (Supplement-V)
EM-5047spec tableSource 'Depth (H) — In Standard' prints as '7.87 - 8.117 (0.3198 - 0.3196)' — the inch range is decreasing (0.3198 > 0.3196); 7.87 mm = 0.3098 in and 8.117 mm = 0.3196 in, so the lower bound 0.3198 appears to be a print error for 0.3098. Preserved verbatim — flagged here, not corrected. Machining reference 'Ex - M' prints as '3.95 - 3.15' (decreasing); also preserved verbatim — likely a print error for '2.95 - 3.15'. Inch conversion (0.156 - 0.124) also decreasing in source, preserved as-is.
Inspection and Adjustment (Cont'd)
Valve spring
Valve spring
Free height mm (in)
Value53.2 (2.09)
Pressure N (kg, lb) at height mm (in)
Value22.5 - 27.5 (2.30, 5.06 - 2.81, 6.18) at 40.3 (1.59); 450 - 550 (45.9, 101.2 - 56.1, 123.6) at 31.3 (1.23)
Valve seat
Valve seat dimensions
Cylinder head seat recess diameter (D)
ValveIn
Sub key
Standard37.475 - 37.5 (1.4754 - 1.4764)
Service37.775 - 37.8 (1.4872 - 1.4882)
Cylinder head seat recess diameter (D)
ValveEx
Sub key
Standard31.975 - 32.0 (1.2589 - 1.2598)
Service32.275 - 32.3 (1.2707 - 1.2717)
Valve seat interference fit
ValveIn
Sub key
Standard0.147 (0.0058)
Service
Valve seat interference fit
ValveEx
Sub key
Standard0.147 (0.0058)
Service
Valve seat outer diameter (d)
ValveIn
Sub key
Standard37.622 - 37.647 (1.4812 - 1.4822)
Service37.922 - 37.947 (1.4930 - 1.4940)
Valve seat outer diameter (d)
ValveEx
Sub key
Standard32.122 - 32.147 (1.2646 - 1.2656)
Service32.422 - 32.447 (1.2765 - 1.2774)
Depth (H)
ValveIn
Sub key
Standard7.87 - 8.117 (0.3198 - 0.3196)
Service8.017 - 8.167 (0.3156 - 0.3215)
Depth (H)
ValveEx
Sub key
Standard8.10 - 8.40 (0.319 - 0.331)
Service8.30 - 8.45 (0.327 - 0.333)
Contacting width
ValveIn
Sub keyA
Standard0.25 - 0.45 (0.010 - 0.018)
Service
Contacting width
ValveIn
Sub keyB
Standard1.45 - 1.85 (0.057 - 0.073)
Service
Contacting width
ValveEx
Sub keyA
Standard1.0 - 1.4 (0.04 - 0.06)
Service
Contacting width
ValveEx
Sub keyB
Standard1.0 - 1.2 (0.04 - 0.05)
Service
Machining reference
ValveIn
Sub keyK
Standard2.45 - 2.65 (0.096 - 0.104)
Service
Machining reference
ValveIn
Sub keyL
Standard36 (1.42)
Service
Machining reference
ValveEx
Sub keyM
Standard3.95 - 3.15 (0.156 - 0.124)
Service
Machining reference
ValveEx
Sub keyN
Standard29.5 (1.161)
Service