Grizzly G0503 instruction manual Hydraulic Fluid Hydraulic System Schedule Minor Service

Hydraulic Fluid	Hydraulic System
Schedule	Minor Service

In order for the hydraulic system to operate the conveyor properly and at the correct tempera- ture, the hydraulic fluid level in the tank should be 2⁄3 full between the fill lines on the fluid sight window, which is located on the front of the tank (see Figure 48).

Check the hydraulic fluid level daily.

To add hydraulic fluid, wipe the dust and dirt from the breather cap shown in Figure 48 and remove the cap. Fill the tank to the full line with an ISO VG 46 hydraulic fluid. If this machine is used in extreme cold conditions use ISO VG 32 hydraulic fluid; use ISO VG 68 hydraulic fluid for extreme hot environments.

Filter Pressure

Gauge Breather

Cap

Fluid Sight

Window

Figure 48. Hydraulic reservoir components.

Inspect and clean the breather cap and filler screen every 40 hours of regular use.

Visually inspect both the breather cap and the plastic screen that sits in the tank opening. If there is visual contamination, clean both items with solvent and compressed air. Allow them to completely dry before installing back in the tank. DO NOT pour hydraulic fluid from the center of the screen back into the tank.

The hydraulic system minor service consists of changing the filter, cleaning the breather cap and filler screen, and inspecting the hydraulic fluid for signs of thermal breakdown, dust contamination, and water contamination.

Perform a “Minor Service” every 960 hours, or when the filter pressure gauge (see Figure 48) nears the red.

The hydraulic system on this machine cre- ates very high pressure and the hydraulic fluid gets hot. Always stop the resaw, make sure the pressure gauge reads 0 PSI, and make sure the fluid cools down before ser- vicing the hydraulic system.

To inspect the hydraulic fluid:

1.Look at the color of the hydraulic fluid in the sight window.

—­ If the fluid is milky in appearance, then the hydraulic fluid is contaminated with water.

—If the fluid is dark brown or opaque, then the hydraulic fluid is severely contaminated or thermal breakdown has occurred.

2.Smell the hydraulic fluid (remove breather cap).

—If the fluid smells rancid or burnt, then the hydraulic fluid has overheated and ther- mal breakdown has most likely occurred. Correct the component that is causing thermal breakdown (See Troubleshooting on page 68).

3.Determine what service is needed.

—If the fluid is transparent and does not smell

burnt or rancid, perform a minor service.

—If the fluid is opaque, smells rancid or burnt, fix the source of contamination or the com- ponent causing thermal breakdown, then perform a major service.

Model G0503 (Mfg. Since 12/08) -37-