PREMAIN CONTROL VALVE BODY INSPECTION
BUE051721100A16
Spring Inspection
1. Measure the spring free length.
-
• If not within specifications, replace the spring.
Specifications
|
Spring
|
Outer diameter (mm {in})
|
Free length
(mm {in})
|
No. of coils
|
Wire diameter (mm {in})
|
|
Pressure modifier accumulator spring
|
8.2 {0.32}
|
38.2 {1.50}
|
16.5
|
1.2 {0.047}
|
|
3-2 timing spring
|
8.25 {0.325}
|
35.4 {1.394}
|
12.5
|
0.85 {0.033}
|
|
Cut back spring
|
8.2 {0.32}
|
29.8 {1.17}
|
7.4
|
0.6 {0.02}
|
|
Bypass spring
|
6.3 {0.25}
|
29.5 {1.16}
|
11.7
|
0.6 {0.02}
|
|
Small 1-2 accumulator spring
|
14.8 {0.583}
|
81.6 {3.21}
|
17.7
|
1.7 {0.067}
|
|
Large 1-2 accumulator spring
|
20.2 {0.795}
|
81.6 {3.21}
|
12.5
|
2.3 {0.091}
|
|
N-D accumulator spring
|
9.8 {0.39}
|
52.9 {2.08}
|
12.0
|
1.0 {0.039}
|
|
Small N-R accumulator spring
|
7.2 {0.28}
|
60.1 {2.37}
|
26.2
|
1.0 {0.039}
|
|
Large N-R accumulator spring
|
11.2 {0.441}
|
56.0 {2.20}
|
15.2
|
1.6 {0.063}
|