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A
737-300/400/500MAINTENANCE MANUAL
F. Property Limits
S 716-019
(1) Refer to the table that follows: ~.............................................................................. | TABLE 601 | | Hydraulic Fluid, BMS 3-11, Property Limits | ................................................................................ | FLUID | IN-SERVICE | | | PROPERTIES | FLUID LIMITS | TEST PROCEDURE | ................................................................................
| Visual | Must be transparent. No phase | Visual |
| | separation or precipitation. | |
| | All colors are satisfactory. | |
| | | |
| Specific Gravity | 0.970 - 1.066 | ASTM D941 |
| 25°C/25°C | | |
| | | |
| Percent of Water | 0.8 max. | ASTM D1744 or |
| by weight | | Infared |
| | | |
| Neutralization | 1.5 max. | ASTM D974 |
| No. mg KOH/gm | | |
| | | |
| Viscosity, cs | 6.0 to 12.5 | ASTM D445 |
| at 100°F | | |
| | | |
| Organic | None detectable by Infrared | Infrared *[1] |
| Contamination | | |
| | | |
| Elemental | | A Procedure with |
| Contamination *[2] | | the Precision that |
| | | Follows: |
| | | |
| Calcium | 50 ppm max. | | 4 ppm |
| Potassium | 50 ppm max. | | 2 ppm |
| Sodium | 50 ppm max. | | 3 ppm |
| Chlorine | 200 ppm max. | | 20 ppm |
| Sulfur | 500 ppm max. | | 10 ppm *[3] |
| | | |
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
| Particulate | NAS 1638, Class 9 *[4] | SAE ARP 598 |
| Contamination | | |
| | | |
| Particle Size | Maximum number of par ticles | |
| | permitted | |
| | | |
| 5 to 15 | 128,000 | |
| 15 to 25 | 22,800 | |
| 25 to 50 | 4,050 | |
| 50 to 100 | 720 | |
| over 100 | 128 | |
2....................…...................................….....................1
*[1] If contamination is suspected, do the procedure in accordance with Boeing Document D6-24429, An Analytical Method for Contaminants in BMS 3-11 Fluids and Their Mixtures Using Differential IR Spectroscopy.
*[2] Contamination is a quantity that is more than that in the new fluid. Compare the data from the fluid analysis with the limits put on the new fluid.
*[3] The precision of | 10 ppm is applicable to the total values in the range from 0 to 1000 ppm. In the range from 1000 to 3000 ppm, the precision will decrease to | 50 ppm with some equipment.
*[4] These are the maximum contamination limits based on a 100 milliliter sample size.
G. Clean the Bottles
S 116-002
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