Hydraulic System 153
1 g. Stop the engine
2. Lock out and tag out the vehicle (see Locking Out and Tagging Out the Vehicle on page 12).
3. Clean around the filler cap and remove it.
4. Place a clean container (minimum capacity: 60 gallons) under the drain plug.
5. Remove the drain plug under the tank and let the tank drain completely.
6. Reinstall the drain plug.
Cleaning the Strainer
To clean the strainer:
1. Empty the hydraulic tank (see Emptying the Hydraulic Tank on page 152).
2. Remove the hose clamp from the suction hose.
3. Slide the hose over the pipe until it clears the ball valve (slide towards the frame of the vehicle).
4. Remove the strainer from the tank port (see Figure 5-33).
5. Clean the strainer using solvent, and check for damage; replace if necessary.
6. Replace the seal (if necessary).
7. Reinstall the strainer.
Caution!
Some hydraulic tanks are pressurized (3 to 5 psi). Open the filler cap slowly.