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Work with the New Instruction

The assembly instruction for a valve block changed overnight. Find out what you now do differently at your workstation.

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Instruction VB-40: revision C and D

Step	Rev. C	Rev. D
Torque M6	9 Nm	11 Nm
Sequence	crosswise	crosswise
O-ring	fitted dry	oiled
Final check	visual	leak test 6 bar
Record	none	per block

Instruction “Assembly of valve block VB-40” at the fictional company Pumpenwerk Saalfeld, revision C and D. Torque for M6 screws: 9 Nm, now 11 Nm. Tightening sequence: crosswise in both. O-ring: fitted dry, now oiled. Final check: visual check, now leak test at 6 bar with record.

Choose one answer

Your first shift with revision D of the instruction “Assembly of valve block VB-40”. Your torque wrench is still set to 9 Nm. What do you do differently from now on?

Set the wrench to 11 Nm and keep everything else as before; the other rows are only reworded.Set the wrench to 11 Nm, oil each O-ring before fitting, and test every block at 6 bar and record the result.

Show a hint

Go through the table row by row and ask: does my hand do something different here?

About this activity

What you practise: You compared two revisions of a work instruction row by row and turned every real change into a step at your workstation.

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Your first shift with revision D of the instruction “Assembly of valve block VB-40”. Your torque wrench is still set to 9 Nm. What do you do differently from now on? Instruction “Assembly of valve block VB-40” at the fictional company Pumpenwerk Saalfeld, revision C and D. Torque for M6 screws: 9 Nm, now 11 Nm. Tightening sequence: crosswise in both. O-ring: fitted dry, now oiled. Final check: visual check, now leak test at 6 bar with record. Three rows changed from revision C to D: torque 9 → 11 Nm, the O-ring is now oiled instead of fitted dry, and the visual check is replaced by a 6-bar leak test with a record. The tightening sequence stays crosswise. A wrench still set to 9 Nm would under-tighten every screw, so re-setting it comes first.