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General Maintenance
4.8 Nozzle Installation
The condition of the nozzles is critical to removal
performance and maintaining a tight, cohesive
stream as water is forced through the nozzles.
Maximum productivity and 98% removal without
damage requires all nozzles to be in excellent
condition. Nozzles should be inspected before the
start of each shift as part of the pre-operation
check or when the operator notices a loss in pres-
sure or a change in performance while blasting. If
visual inspection of the nozzle spray pattern indi-
cates that the pattern is not in the # 1-4 quality
range, as indicated on the Nozzle Quality Guide,
the nozzle must be replaced.
Use the following procedure when replacing
nozzles:
1. Make sure the Hog Arm and blasting heads
are in the full up position and locked with the
safety pin.
2. Make sure the waterblasting system is shut-
down with the truck in the service position.
3. Remove the spray bar protector cotter pin and
the spray bar protector.
4. Remove worn or damaged nozzles.
Typical Spray Bars With Protectors Installed
Spray Bar Protector, Cotter Pin & Gasket
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