Lubrication and Service - Section 40 09/11 OM4054 Page 40-2 HYDRAULIC TANK SERVICE 4. Install the fill cap. Filling Instructions 1. Lower the dump body and turn the key switch OFF. 5. Start the engine. Raise and lower the dump body three times to circulate oil and fill hoses and components. 6. Repeat the previous steps until oil level is again in upper sight glass (5). 7. If oil level falls below lower sight glass (6) with the engine on, repeat this procedure. The hydraulic tank may be pressurized! Depress the relief valve on the tank before removing the filler cap. TRANSMISSION OIL LEVEL CHECK 1. With the engine off:
The oil level must be visible in the upper part of the sight gauge between H and L. This sight gauge is to be used when changing oil, before engine start-up (engine off for eight hours or more). Add clean oil as required through the transmis- sion oil filler tube at the left rear of the transmis- sion. When the engine is turned on and transmission oil reaches normal operating temperature, check the oil level again, as described below. FIGURE 40-1. HYDRAULIC TANK 1. Hydraulic Tank 2. Pressure Relief Valve 3. Breather 4. Fill Cap 5. Hydraulic Oil Level Upper Sight Glass 6. Hydraulic Oil Level Lower Sight Glass 7. Hydraulic Oil Drain 2. With the engine on:
The oil level must be visible in the lower sight gauge between H and L. Use this sight gauge with the following guide- lines: truck parked on level surface 2. Depress relief valve (2, Figure 40-1) for 30 - 45 seconds to release any internal tank pressure. Remove fill cap (4). Turn the cap slowly to release any residual tank pressure. engine at low idle shift lever in NEUTRAL transmission oil at normal operating temperature 3. Refer to lube key C on the lubrication chart. Fill the tank with the recommended oil until oil is visible in upper sight glass (5). Hydraulic tank capacity is: 576 l (152 gal).
Add clean oil as required through the transmis- sion oil filler tube at the left rear of the transmis- sion.