TB 9-4920-452-35
SECTION I
IDENTIFICATION AND DESCRIPTION
This bulletin provides instructions for the
1. Test Instrument Identification.
calibration of Hydraulic Systems Test Set, Boeing, Models 114G1038-31 and 114G1038-71.
The manufacturer's manual was used as the prime data source in compiling these
instructions. The equipment being calibrated will be referred to as the TI (test instrument)
throughout this bulletin.
Utility system and APU system pressure gage ranges are
a. Model Variations.
different (reversed).
b. Time and Technique. The time required for this calibration is approximately 3
hours, using the dc and low frequency and physical technique.
2. Forms, Records, and Reports
a. Forms, records, and
reports required for calibration personnel at all
levels are
prescribed by TB 750-25.
b. Adjustments to be reported are designated (R) at the end of the sentence in which
they appear. When adjustments are in tables, the (R) follows the designated adjustment.
Report only those adjustments made and designated with (R).
3. Calibration Description. TI parameters and performance specifications which
pertain to this calibration are listed in table 1.
Table 1. Calibration Description
Test instrument
parameters
Performance specifications
Pressure gage
Range: 0 to 5000 psi
Accuracy: 1 % at 1250 to 3750 psi
1.5% at 0 to 1250 psi and 3750 to 5000 psi
Pressure gage
Range: 0 to 10,000 psi
Accuracy: 1% at 2500 to 7500 psi
1.5% at 0 to 2500 and 7500 to 10,000 psi
Range: 200 to 300 Hz
Accuracy: 3.5 Hz
Pyrometer
Range: 0 to 400 oF
Accuracy: 1% FS
SECTION II
EQUIPMENT REQUIREMENTS
4. Equipment Required. Table 2
identifies the
specific equipment to be
used in this
calibration procedure. This equipment is issued with Secondary Transfer Calibration
Standards Set AN/GSM-286. Alternate items may be used by the calibrating activity. The
items selected must be verified to perform satisfactorily prior to use and must bear evidence
of current calibration. The equipment must meet or exceed the minimum use specifications
2