Welch Allyn Inc.
Aneroid Sphygmomanometers Service Manual
Revision A
Welch Allyn Inc.
Page 24 of 40
Section 6: Silver Ring Hand Aneroid
6.1 Opening/Removing and Replacing Parts of the Silver
Ring
1. Unscrew the bulb from the gauge.
2. Place screwdriver under the bezel in the opening provided and lift
bezel.
3. Place screwdriver under the crystal in the opening provided and lift
the crystal.
4. Using the T105243A pointer removal tool, remove the pointer from
the pinion.
5. Remove the dial from the housing.
6. Remove the movement using T112833 movement removal tool.
7. Remove the movement internal housing.
8. Remove the valve body-trigger module.
Reassemble in reverse order (Ensure you tighten the movement
down with Torque wrench T112653 using adapter T112653A)
* - See section 8.6 for drawing of the Silver Ring Gauge.
