The Filler and Bleeder,hydraulic Sys, cataloged under National Stock Number 4920-01-003-4004, is classified within Federal Supply Class 4920 (Aircraft Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. Government technical data includes 3 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4920-01-003-4004 |
| Item Name | Filler and Bleeder,hydraulic Sys |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Status | ACTIVE |
| Voltage in Volts and Current Type | 115.0 AC OR 115.0 DC |
| Reference Data and Literature | MIL-PRF-XXXXX PROJECT 4940-0669 |
| Functional Description | PUMPS EXISTING FLUID FROM THE MASTER CYLINDER BY MEANS OF A VACUUM AND THEN REFILLS THE MASTER CYLINDER WITH FILTERED MIL-PRF-83282 HYDRAULIC FLUID UNDER PRESSURE. USED ON C-5A AIRCRAFT MAIN LANDING GEAR PITCH POSITIONER MASTER CYLINDER ASSEMBLY A |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 4940-0669 | 5/1 Secondary reference Aeronautical and Support Equipment Type/asetds/aflcmc/ezsc |
| PD351 | D/9 Drawing number reference only U.S. Government activity |
| PD351 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4920-01-003-4004 is a Filler and Bleeder,hydraulic Sys, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
Key specifications for 4920-01-003-4004: Overall Height: 20.000 INCHES MINIMUM AND 22.000 INCHES MAXIMUM IN; Voltage in Volts and Current Type: 115.0 AC OR 115.0 DC; Reference Data and Literature: MIL-PRF-XXXXX PROJECT 4940-0669; Overall Length: 30.000 INCHES MINIMUM AND 32.000 INCHES MAXIMUM IN. 3 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.