C H A P T E R 3 A V I A T I O N U N I T M A I N T E N A N C E I N S T R U C T I O N S

3-4. a WARNING All electrical repairs or replacement should be performed by an aircraft electrician or other qualified person. Electrical Components Maintenance

TM-55-4920-403-20P Tester Exhaust Gas Temperature Manual
Page Navigation
6

TM 55-4920-403-20&P C H A P T E R 3 A V I A T I O N U N I T M A I N T E N A N C E I N S T R U C T I O N S Section I. GENERAL 3-1. Descriptive Information. e. Information on care, repair and parts for a. Refer to TB 43-0124 for aviation unit mainte- the environmental control unit can be ‘found in nance to be performed on the shelter. TM 5-4120-239-14. b. Maintenance of grinding machine can be f. Power cables may be field repaired using a found in the appropriate technical manuals and standard blade screwdriver to replace connector. Refer manufacturer’s literature. to drawing 4920-EG-058 (figure D-4). c. Replace unserviceable components of shop set. g. Have an aircraft electrician or other qualified person work on electrical parts of the shelter. d. Refer to the maintenance allocation chart (Appendix B) for aviation unit maintenance to be performed on the shop set. Section Il. MAINTENANCE INSTRUCTIONS 3-2. Shelter Maintenance. Inspect shelter care- fully for defects. Refer to TB 43-0124 and TM 11- 5410-213-14P for repair procedures and replace- ment parts. 3-3. Fixture Maintenance. a. Work Table. The worktable is part of the tool set and replacements may be ordered from the Supply Catalog. Remove and save the mounting bolts, lag screws and brackets (items 10, 17 and 25, figure D-1) from the original work table. Place the new worktable on the floor mounting plates (item 26, figure D-1) and install bolts. Bolt angle brackets (item 10, figure D-1) to wall; then, using the bottom hole as a guide, drill the table top and install lag screws. b. ECU Shipping Bracket. If the ECU shipping bracket or its straps are found to be unserviceable, remove the four bolts and Iockwashers securing it to the floor, replace with a new bracket and reinstall the bolts and Iockwashers. c. ECU Shelf Assembly. (1) The ECU support cable assembly (item 12, figure D-2) may be replaced by drilling out the two blind rivets (item 85, figure D-2), removing the two screws (item 88, figure D-2) and removing the hook (item 101, figure D-2) from the “D” ring on the shelter. Position the new cable assembly and install the appropriate hardware. Be sure to crimp the hook over the “D’’ ring to secure it. (2) The ECU support shelf itself may be replaced by removing the “D” ring as previously explained and removing three screws (item 96, figure D-2). Reverse this procedure to install a new shelf support. (3) The hinge (item 69, figure D-2) may be replaced by removing three screws (item 96, figure D-2) and drilling out 13 rivets (item 97, figure D-2). Rivet the replacement hinge to the shelter and reinstall three screws. d. Compressed Air Panel. (1) The plug assembly (item 9, figure D-2) may be replaced by drilling the rivet (item 84, Change 3 3-1

Privacy Statement
Press Release
Contact