TB 9-6685-319-35
(4) Using hand pump, apply pressure to system until (low or high pressure) piston is
approximately 9/16-inch above deadweight cylinder.
(5) If TI indication does not indicate within limits calculated in (2) above, perform b
below.
(6) Repeat (2) through (5) above, using cardinal points nearest to 80, 60, 40, and 20
percent of TI scale.
b. Adjustments. Perform 8b above.
11. Final Procedure
a. Deenergize and disconnect all equipment.
b. Annotate and affix DA label/form in accordance with TB 750-25.
SECTION IV
12. Preliminary Instructions
a. The
instructions outlined in
paragraphs 12 and
13 are preparatory to the
calibration
process. Personnel should become familiar with the entire bulletin before beginning the
b. Items of equipment used in this procedure are referenced within the text by common
name and item identification number as listed in tables 2 and 3. For the identification of
equipment referenced by item numbers prefixed with A, see table 2, and for prefix B, see
c. Unless otherwise specified, verify the result of each test and, whenever the test
requirement is not met, take corrective action before continuing with the calibration.
Adjustments required to calibrate the TI are included in this procedure. Additional
maintenance information is contained in the manufacturer's manual for this TI.
d. Unless otherwise specified, all controls and control settings refer to the TI.
13. Equipment Setup
b. Thoroughly clean bourdon tube or diaphragm of TI. First, rotate TI and allow any
liquid which may be in the bourdon tube or diaphragm area to flow out. Using an eye
dropper or small glass tube, fill bourdon tube or diaphragm area with toluene, methyl
9