TM 1-4920-446-13 & P
MAINTENANCE INSTRUCTIONS, AVUM, AVIM
SECTION I. REPAIR PARTS, SPECIAL TOOLS, AND TEST EQUIPMENT
3-1. Common Tools and Equipment. For authorized common tools and equipment, refer to the Modified Table of Or-
ganization and Equipment (MTOE) applicable to your
3-2. Tools for AVUM and AVIM. See Appendix B, Section III.
3-3. Special Tools. No special tools are required.
3-4. Test Equipment. The following test equipment is required to check and adjust the instrumentation of the hydraulic
test stand: Calibrated 0-6000 psi master gauge, 0-300 psi master gauge, and calibrated flowmeter.
3-5. Repair Parts. Repair parts are listed and illustrated in Appendix C of this manual.
SECTION II. SERVICE UPON RECEIPT
3-6 . Unpacking and Installation. The test stand is shipped completely assembled on fully inflated tires and requires no
major assembly of components prior to preparing the stand for use. Open all cabinet doors and access panels. Thor-
oughly inspect interior of the test stand. Remove all extraneous packing or cushioning material used to protect internal
components during shipment. Small areas of normally exposed metal surfaces may be wrapped with protective paper
covering or tape during shipment. Be certain all such coverings are removed.
3-7. Initial Inspection. It is important to carefully inspect the complete test stand for any possible, damage which may
have occurred during shipment. The following initial inspection procedures are recommended.
a. Check the data appearing on the test stand nameplate to verify it is the type of unit designated in paragraph 1-1
of this manual. If there is any doubt, do not operate the test stand.
b. Remove the hose assemblies from the cabinet. Inspect the hose assemblies carefully for evidence of damage,
breaks, or loose fittings.
The output hose assemblies are subjected to extremely high pressures. Replace a defective hose assembly before
operating the test stand.
c. Open the control and instrument panel access door. Inspect all gauges, indicators and controls for evidence of
shipping damage. Check that all parts are securely mounted. Check that all manually operated switches and controls