Lubrication and Service - Section 40 08/11 OM4041 Page 40-12 Hydraulic Tank Service When servicing the hydraulic tank, always follow the Filling Instructions described above to relieve any internal tank pressure before opening tank. 1. When checking oil level, or any other service, inspect the breather (3, Figure 40-3) to be cer- tain that it is open to atmosphere. Clean any excess accumulations of dirt/mud, etc. from around the breather. Clean/replace breather element as necessary. Refer to Hydraulic Tank Breather. 2. Whenever oil is drained from tank, clean diffus- ers (7 & 11) and strainers (8, 9, & 10). FIGURE 40-3. HYDRAULIC TANK (TOP VIEW) 1. Hydraulic Tank 2. Pressure Relief Valve 3.
Breather 4. Filler Cap 5. Sight Glass Guard 6. Cover Plate 7. Diffusers 8. Strainers 9. Wire Mesh Strainer 10. Strainer 11. Diffuser FIGURE 40-2. HYDRAULIC TANK 1. Hydraulic Tank 2. Pressure Relief Valve 3. Breather 4. Filler Cap 5. Hydraulic Oil Level Upper Sight Glass 6. Hydraulic Oil Level Lower Sight Glass 7. Hydraulic Oil Drain