Chapter 3. MAINTENANCE INSTRUCTIONS, AVUM, AVIM

TM 55-4920-442-13 & P

CHAPTER 3

MAINTENANCE INSTRUCTIONS, AVUM, AVIM

SECTION I. REPAIR PARTS, SPECIAL TOOLS AND TEST EQUIPMENT.

3-1. Common tool and equipment. For authorized common tools and equipment, refer to the modified table of

organization and equipment (MTOE) applicable to your unit.

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: 0-6000 P.S.I. master gage or equivalent, 0-300 P.S.I. master gage, calibrated flowmeter and standard

thermometer.

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 thoroughly inspect

interior of the test stand to 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 attempt to operate the test stand in accordance with the instructions

contained in this manual.

b. Remove the hose assemblies from the cabinet. Inspect the hose assemblies carefully for evidence of damage,

breaks, or loose fittings.

WARNING

The output hose assemblies are subjected to extremely high pressures. Repair any defective

hose assembly before using the hose assembly during operation of the test stand.

3-1