Figure 4. Tightening pattern of 7/8-inch nuts for heating coil assembly flange.
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Figure 5. Tightening procedure
|
| Pass |
Torque |
| 1. |
1/3 of final torque. Start at bolt number 1 and follow cross pattern. |
| 2. |
2/3 of final torque following cross pattern. |
| 3. |
At final torque following cross pattern. |
| 4. |
At final torque. Start at highest bolt number and tighten in a counterclockwise sequence. |
|
|
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Figure 6. Tightening pattern of 1/2-inch nuts for thermal fluid inlet and outlet pipe flanges.
