CHAPTER 7
HYDRAULIC SYSTEMS
22
HYDRAULIC SYSTEMS
Maintenance
(Figure 13)
The hydraulic system for your machine is a very durable and reliable system. It must be
properly maintained to ensure trouble free operation and longevity. The factory has installed a 32
weight AW hydraulic fluid. Because this equipment is used primarily outdoors and exposed to the
elements, it is recommended that the oil be changed annually. Hydraulic oil will degrade if it
remains stagnate in the system for long periods of time. Check the fluid level weekly. It should be
approximately 5” below the top of the filler neck. When checking the fluid level, also note the color
and condition of the fluid. It should be clear in color.
Hydraulic Fluid Troubleshooting
CONDITION SOLUTION
1 White milky color indicates water contamination. Change the fluid.
2 Dark fluid usually indicates a dirty oil filter. Replace the oil filter.
3 Foamy fluid will cause a noisy pump and slow erratic
operation of the system. The cause is usually low oil
level or air in the system.
Check fluid level and bleed off air
by pushing the shear down button
and holding for 10 seconds.
4 Machine runs slow after continuous operation. Check
hydraulic fluid temperature, it should be no more than
140°F (60°C).
Allow to cool down. Move to a
shaded area if possible.
Changing Hydraulic Fluid and Filter
(Figure 14 & Figure 15)
The hydraulic fluid should be changed at least once a year. More frequently if the machine is
constantly in operation in a dusty environment or if the fluid becomes contaminated. To change the
fluid:
1. Remove the Left Side Covers and set aside.
2. Locate the Drain Hose “A” coiled up behind the Hydraulic Filter “B” and the Drain Valve
“C” located on the bottom of the Hydraulic Tank “D” on the Filter end of the tank.
3. Remove Filler Cap.
4. Uncoil Drain Hose and hang over the side of the machine and trailer.
5. Place a container under the hose to catch the old fluid.
6. Open the Drain Valve and drain the fluid into the container. Discard of Properly.
7. Loosen, remove and discard the used Hydraulic Filter.
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