Control Valve Upper Body: Inspection
Measure valve spring free length and outer diameter. See UPPER VALVE BODY SPRING IDENTIFICATION table. Check for deformation or damage. Replace valve springs if deformed or fatigued. Check sliding surfaces of valves, sleeves and plugs.
UPPER VALVE BODY SPRING IDENTIFICATION (1)
| Spring No. | Length In. (mm) | Diameter In. (mm) | ||
|---|---|---|---|---|
| 1 | .48 (37.5) | .28 (7.00) | ||
| 2 | 1.22 (31.0) | .35 (8.9) | ||
| 3 | 1.56 (39.5) | .43 (11.0) | ||
| 4 | .81 (20.5) | .28 (7.00) | ||
| 5 | 1.41 (36.0) | .32 (8.1) | ||
| 6 | 1.92 (48.8) | .77 (19.6) | ||
| 7 | 1.06 (27.0) | .28 (7.00) | ||
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