© 2022 Pierce Manufacturing Inc. All Rights Reserved. Husky 3 Foam System / 4-17
MAINTENANCE
Question Reason for Question Test Procedure
Q. Is the ground circuit OK? The foam system must
have an adequate ground
circuit (continuity) for the
system to operate.
Check ground circuit (ckt# 1640K). Refer to
“System Diagrams” on page 4-23 for additional
circuit information.
1149
Switched Positive
Stud
Ground Stud
Repair ground circuit.
No
Yes
Replace LVDT.
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