SERVICE DATA AND SPECIFICATIONS (S.D.S.) — Inspection and Adjustment (Cont'd)
EM-48spec tableInspection and Adjustment (Cont'd)
VALVE
Valve Specifications
| In./Ex. | Standard | Limit | |
|---|---|---|---|
| Valve head diameter (D) | In. | 34.0 - 34.2 (1.339 - 1.346) | — |
| Valve head diameter (D) | Ex. | 28.0 - 28.2 (1.102 - 1.110) | — |
| Valve length (L) | In. | 88.8 - 89.0 (3.496 - 3.504) | — |
| Valve length (L) | Ex. | 89.2 - 89.4 (3.512 - 3.520) | — |
| Valve stem diameter (d) | In. | 5.965 - 5.980 (0.2348 - 0.2354) | — |
| Valve stem diameter (d) | Ex. | 5.945 - 5.960 (0.2341 - 0.2346) | — |
| Valve face angle (α) | In. | 45°30' | — |
| Valve face angle (α) | Ex. | 45°30' | — |
| Valve head margin (T) | In. | 1.3 (0.051) | 0.5 (0.020) |
| Valve head margin (T) | Ex. | 1.5 (0.059) | 0.5 (0.020) |
Valve head diameter (D)
In./Ex.In.
Standard34.0 - 34.2 (1.339 - 1.346)
Limit—
Valve head diameter (D)
In./Ex.Ex.
Standard28.0 - 28.2 (1.102 - 1.110)
Limit—
Valve length (L)
In./Ex.In.
Standard88.8 - 89.0 (3.496 - 3.504)
Limit—
Valve length (L)
In./Ex.Ex.
Standard89.2 - 89.4 (3.512 - 3.520)
Limit—
Valve stem diameter (d)
In./Ex.In.
Standard5.965 - 5.980 (0.2348 - 0.2354)
Limit—
Valve stem diameter (d)
In./Ex.Ex.
Standard5.945 - 5.960 (0.2341 - 0.2346)
Limit—
Valve face angle (α)
In./Ex.In.
Standard45°30'
Limit—
Valve face angle (α)
In./Ex.Ex.
Standard45°30'
Limit—
Valve head margin (T)
In./Ex.In.
Standard1.3 (0.051)
Limit0.5 (0.020)
Valve head margin (T)
In./Ex.Ex.
Standard1.5 (0.059)
Limit0.5 (0.020)
VALVE SPRING
Valve Spring Specifications
| Standard | Limit | |
|---|---|---|
| Free height (H) | 43.1 (1.697) | — |
| Spring constant N/mm (kg/mm, lb/in) | 28.4 (2.9, 162) | — |
| Out-of-square (S) | — | 1.8 (0.071) |
Free height (H)
Standard43.1 (1.697)
Limit—
Spring constant N/mm (kg/mm, lb/in)
Standard28.4 (2.9, 162)
Limit—
Out-of-square (S)
Standard—
Limit1.8 (0.071)
HYDRAULIC VALVE LIFTER
Hydraulic Valve Lifter Specifications
| Value | |
|---|---|
| Valve lifter diameter | 30.955 - 30.965 (1.2187 - 1.2191) |
| Lifter guide bore diameter | 31.000 - 31.013 (1.2205 - 1.2210) |
Valve lifter diameter
Value30.955 - 30.965 (1.2187 - 1.2191)
Lifter guide bore diameter
Value31.000 - 31.013 (1.2205 - 1.2210)