CARRIER AS 7G0714 - Caterpillar

Fuel Tank Cap and Screen
Clean the Cap and Strainer
Pressure air can cause personal injury.When using pressure air for cleaning, wear a protective face shield, protective clothing and protective shoes.The maximum air pressure must be below 205 kPa (30 psi) for cleaning purposes.Use all cleaning solutions with care.
1. Remove the cap and strainer. 2. Replace the cap if the gasket is damaged. 3. Wash the strainer in clean, nonflammable solvent and dry. 4. Install the strainer.5. Put a light coat of oil on the cap components.6. Install the cap.Hydraulic System
Service Strainer and Filters
At operating temperature, the hydraulic tank is hot and under pressure.Hot oil can cause burns.Remove the plug only when the engine is stopped, and the plug is cool enough to touch with your bare hand.
Clean the Strainer
1. Clean area thoroughly to keep dirt out of strainer and filter covers. 2. Position the machine as above. 3. Open the drain cock to release air from air tank. 4. Release of internal pressure from hydraulic tank. 5. Remove bolts (1) and spring washers (2) and cover (3). 6. Remove spring (4) and strainer (5). 7. Wash strainer (5) in clean nonflammable solvent and allow to dry. 8. Inspect the O-ring seal and replace if worn or damaged. 9. Install strainer (5) and spring (4). Make sure seal and spring are properly positioned. 10. Inspect the seal and replace if worn or damaged. 11. Install cover (3) with spring washers (2) and bolts (1).Change the Return Filter
1. Remove cover (3) bolts (1) and spring washers (2). 2. Remove spring (4) valve (5) element (7) and O-ring seal (6). 3. Inspect O-ring and replace if worn or damaged. 4. Install new element (7) valve (5) spring (4) and O-ring (6). 5. Install cover (3) with spring washers (2) and bolts (1).Change the Drain Filter
1. Open the access cover located to the left of the hydraulic tank. 2. Clean area to keep dirt out of filter base.3. Remove the used element from filter base. 4. Clean the filter base. 5. Coat the seal of a new filter with clean hydraulic oil and install it in the filter base.6. Install a new filter by hand. When the filter element contacts the seal, tighten 3/4 turn more.7. Close the access cover.Change the Pilot Filter
1. Open the front side cover at the left of the machine. 2. Clean area to keep dirt out of pilot filter. 3. Remove the case (2) from the filter base (1). 4. Remove element (3) and O-ring seal (4) backup ring (5) from filter base (1).5. Clean the filter base. 6. Wash the case (2) in clean nonflammable solvent. Allow the case (2) to dry. 7. Lightly oil a new O-ring (4) and back-up ring (5) with clean hydraulic oil and install it in the filter base (1). 8. Coat the seal of a new element (3) with clean hydraulic oil.9. Install element (3) carefully to avoid seal damage. 10. Tighten the case (2) to filter base (1).Change the By-pass