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Section 4 - General Maintenance
4.7 Dirt Shield Replacement
The dirt shield should be inspected daily to ensure
it is tightened properly and that the felt seal is in
good condition.
Use the following procedure to replace a
damaged or worn felt seal:
1. Make sure the waterblasting system is shut-
down and the truck is in the service position.
2. Hold the thru-shaft so it won’t turn with a
3/4” (19 mm) wrench inserted in the slot at
the base of the thru-shaft motor.
3. Turn the spray bar counterclockwise by hand
until it is free of the shaft.
4. Remove brass button.
5. Use a stainless steel wire brush to clean the
dirt from the thru-shaft threads.
6. While still holding the thru-shaft with the
wrench, remove the dirt shield by turning it
counterclockwise.
7. Remove the felt seal. Then clean the dirt shield
and shroud.
8. Place a new felt seal on the dirt shield and
apply a light coating of anti-sieze to the thru-
shaft threads.
9. Hold the thru-shaft with the 3/4” (19 mm)
wrench, install the new dirt shield and hand
tighten.
NOTICE:
ONLY HAND TIGHTEN THE DIRT SHIELD. NEVER USE TOOLS
TO TIGHTEN THE DIRT SHIELD. IF THE DIRT SHIELD IS
TIGHTENED MORE THAN HAND TIGHT IT WILL CAUSE THE
SPRAY BAR TO ROTATE SLOWLY OR NOT ROTATE AT ALL.
10. Reactivate the truck and the waterblasting
system by following the steps in the Start Up
Procedure.
11. Purge the blast head at low pressure to re-
move debris that could clog the nozzles.
12. Shutdown the waterblasting system and re-
turn the truck to the service position.
13. Install a new brass button seal, hold the thru-
shaft with the wrench and reinstall the spray
bar.
14. Hand tighten the spray bar by turning it clock-
wise slowly until it stops. Then seat the seal
by turning the spray bar another 15%. Make
sure you remove the wrench when the instal-
lation is complete.
15. Install the spray bar protector.
Dirt Shield
Button Seal
Apply Anti-Seize
Brass Dirt Shield & Felt Seal
Typical Dirt Shield Installation
Summary of Contents for STRIPE SH7500
Page 1: ...75 H Operations Manual...
Page 2: ......
Page 72: ...72 NOTES...
Page 108: ...108 NOTES...
Page 161: ...161 Section 5 Scheduled Maintenance...
Page 167: ...167 Appendix 2 Tools Spare Parts...
Page 168: ...168 Appendix 2 Tools Spare Parts...
Page 169: ...169 Appendix 3 Daily Report Pre Op Checklist 1 877 HOG ROAD WWW STRIPEHOGSUPPORT COM 60...
Page 178: ...178 NOTES...
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