SECTION I IDENTIFICATION AND DESCRIPTION

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

Frequency meter

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