Section III. GENERAL MAINTENANCE INSTRUCTIONS
This section contains the maintenance procedures for direct support and general support maintenance personnel.
These procedures cover removal, cleaning, inspection, repair, and installation of water distributor component parts.
The responsibility for each level of maintenance can be found in the Maintenance Allocation Chart (MAC) in Appendix
5-5. REMOVAL PROCEDURES.
Refer to paragraph 4-8 for removal procedures.
5-6. CLEANING PROCEDURES.
Refer to paragraph 4-9 for cleaning procedures.
5-7. INSPECTION PROCEDURES.
a. Clean all parts before inspection.
b. Inspect all bearings and bearing cups in accordance with TM 9-214.
c. Inspection consists of checking for defects such as physical distortion, wear, cracks, and pitting.
Dimensions of parts should be checked for compliance with maximum wear limits data. Parts subjected to
heavy load or pressure should be inspected more thoroughly by performing surface temper, magnetic
particle, or fluorescent penetrant procedures where necessary.
If visual inspection proves the service of gears doubtful, perform a surface temper
or magnetic particle inspection or both.
d. Gears should be inspected on removal for the
(1) Normal wear in excess of practical limits.
(2) Pitting of teeth due to extreme pressure loading.
(3) Abrasive wear due to foreign materials in lubricant.
(4) Scoring, seizing, and galling of teeth due to excessive loads and clearance.
(5) Burning and loss of temper due to extreme high temperature operation caused by excessive friction
and lack of lubrication.
(6) Rolling or plastic yielding due to extreme loads over a long period.
(7) Cracks and fractures due to shock loading.
e. Inspect shaft splines for wear, pitting, rolling, peening, and fatigue cracks. In many instances, the same
inspection procedure will apply as for gears. The condition, however, will in most cases be much less
pronounced. Perform a magnetic particle inspection if serviceability of shaft spline is unclear.
f. Check all hose surfaces for broken or frayed fabric. Checks for breaks caused by sharp kinks or rubbing
against other parts of the equipment. Inspect metal tubing lines for kinks. Inspect the fitting threads for
damage. Replace any part found defective. Following assembly and during initial operation period, check
g. Visually inspect all castings and weldments for cracks.
h. Inspect all wires for chafed or burned insulation. Inspect all terminal connectors for loose connections and
5-8. REPAIR PROCEDURES.
Refer to paragraph 4-11 for repair procedures.
5-9. INSTALLATION PROCEDURES.
Refer to paragraph 4-13 for installation procedures.
5-10. WELDING REPAIR.
Cracks and broken welds at critical stress points of highly stressed members will
require very careful preparation and welding procedures to ensure successful
repair. Whenever possible, these parts should be replaced rather than repaired.
In those cases of emergency where welding repair Is the only practical means of
restoring the serviceability of the vehicle, the Instructions given below must be
a. The surface of parts to be welded must be free from paint, grease, scale, and other foreign matter that can
be removed by chipping and wire brushing.