TM 5-3805-248-23-1
TROUBLESHOOTING INTRODUCTION
INTRODUCTION
0004 00
1.
Troubleshooting procedures in this chapter contain information you need to fault locate malfunctions on the 621B
Scraper and its components.
2.
Troubleshooting procedures are located as follows:
a.
b.
3.
A Troubleshooting Symptom Index in WP 0008 00 is provided to aid in locating a malfunction or symptom and directs
you to the appropriate troubleshooting procedure in WP 0009 00.
4.
Troubleshooting procedures in this manual cannot provide all the answers or correct all malfunctions encountered.
However, these procedures are an organized step-by-step approach to a problem, which directs tests and inspections
toward the source of the problem and its successful resolution.
5.
If a malfunction is not listed in the Troubleshooting Symptom Index in WP 0008 00, or stated tests or inspections and
corrective actions do not correct the problem, notify your supervisor.
6.
Before performing troubleshooting, read and follow all safety instructions found in the Warning Summary at the front of
this manual.
PRELIMINARY TROUBLESHOOTING PROCEDURES
0004 00
1.
Before starting any specific troubleshooting procedures, perform the following:
NOTE
Fluid leaks are classified as either Class I, Class II or Class III.
Class I:
Seepage of fluid (as indicated by wetness or discoloration) not great enough to form drops.
Class II:
Leakage of fluid great enough to form drops, but not enough to cause drops to drip from item
being checked/inspected.
Class III:
Leakage of fluid great enough to form drops that fall from item being checked/inspected.
Before starting any specific troubleshooting procedures, perform the following:
a.
Visually check for ruptured oil hoses or tubes and for Class II or Class III leaks.
b.
Check for mechanical jamming or binding caused by rocks or other foreign matter.
c.
Check fluid levels in subject area and service as required (WP 0019 00 and WP 0020 00).
2.
Ensure all applicable Operator Troubleshooting has been performed before proceeding.
EXPLANATION OF TROUBLESHOOTING TABLE COLUMNS
0004 00
The columns in troubleshooting WP 0006 00 through WP 0015 00 are defined as follows:
1.
MALFUNCTION. Indicates fault that has occurred in system/equipment.
TEST OR INSPECTION. Indicates test or inspection to be performed to isolate probable cause for fault symptom.
2.
CORRECTIVE ACTION. Indicates procedure to correct the problem.
3.