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Scheduled Maintenance
Typical Hydraulic Tank Inspection Plate
Hydraulic Tank Low Pressure Filter & Tank Fill Cap
LOW PRESSURE
FILTER
FILL CAP
6. Flush the tank again with fresh uid to remove
contaminates from cleaning the screens. Then
install drain plug.
7. Put a new seal on the inspection plate, coat
the seal with hydraulic uid and install the
plate. Tighten the center bolt snug to secure
the plate.
8. Add uid until the tank is full. Monitor the uid
level using the sight gauge.
9. Replace the ll cap and tighten.
5.18 Replacing Hydraulic Filters
Before performing any maintenance procedure,
make sure the waterblasting system is shutdown
with the truck in the service position.
Low Pressure Filter
The low pressure lter is a cartridge type lter
located at the top of the tank. Use the following
procedure to change the lter.
Changing the low pressure lter element:
1. Rotate the lter cap counterclockwise to loosen
and remove the cap.
2. Remove the dirty lter element from the can-
ister.
3. Thoroughly clean the canister and insert the
new element.
4. Install a new seal on the cap and lubricate the
seal with hydraulic uid.
5. Replace the cap and hand tighten.
6. Inspect the cap for leaks when the hydraulic
system is activated.
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