Hydraulic System 117
The entire system will require between 50 and 60 gallons of oil.
6. Reinstall the filler cap and fully open the shut-off valve (see Figure 2-13).
7. Prime the pump (see Priming a New Pump on page 104).
8. Start the engine without pushing on the gas pedal.
The engine MUST run at idle speed for at least 5 minutes to make sure there is no more air in the
system. You can slowly raise the engine RPM only after the engine has run 5 minutes. When you
raise the RPM, always make sure the pump does not make excessive noise.
Cleaning the Strainer
To clean the strainer:
1. Empty the hydraulic tank (see Emptying the Hydraulic Tank on page 115).
2. Remove the hose clamp from the suction hose.
3. Slide the hose over the pipe until it clears the nipple (slide towards the frame of the vehicle).
4. Remove the strainer from the tank port (see Figure 5-27 and Figure 5-28).
5. Clean the strainer using solvent, and check for damage; replace if necessary.
6. Replace the seal if necessary.
7. Reinstall the strainer.
8. Using a filtering screen, refill the tank with high-quality oil until it reaches the ¾ mark on the oil
gauge (see Recommended Lubricants on page 69 for specifications).
The entire system will require between 50 and 60 gallons of oil.
Caution!
It is not recommended to mix different brands and/or grades of oil in the hydraulic tank.
Caution!
Failure to open the shut-off valve may seriously damage the pump and the hydraulic
system.
Caution!
It is not recommended to mix different brands and/or grades of oil in the hydraulic tank.
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