TM 10-5410-228-24
This task covers:
a. Removal
b. Installation
INITIAL SETUP
Tools/Test Equipment:
Equipment Conditions:
Shop Equipment, Automotive Maintenance and
Power shut off, power panel and rear control panel
Repair (Item 38, Appendix B)
tagged.
Tool Kit, Service: R22 Refrigeration Unit
Filter/drier removed (see para 3.9.13).
(Item 52, Appendix B)
R22 refrigerant system recovered (see para 3.9.1).
Gloves (Item 16, Appendix B)
ECU doors and covers opened or removed as
Goggles (Item 17, Appendix B)
required (see para 2.14.1).
ECU work platform installed (reference
Materials/Parts:
TM 10-5410-228-10).
Nitrogen (Item 34, Appendix C)
Insulation (Item 31, Appendix C)
References:
TM 10-5410-228-10
Tape, Insulation (Item 55, Appendix C)
Insulation Adhesive (Item 3, Appendix C)
Four Lockwashers (Item 18, Appendix E)
Lockwasher (Item 20, Appendix E)
The R22 refrigerant system is pressurized. To prevent injury to personnel, gloves and eye
protection must be worn when working on R22 refrigerant system.
Prevent contact of R22 refrigerant with flame or hot surface. Heat causes R22 refrigerant to
break down and form carbonyl chloride (phosgene), a highly toxic and corrosive gas.
R22 refrigerant must be recovered. Venting R22 refrigerant into the atmosphere is a
violation of public law and subject to severe penalties.
Do not attempt to remove or connect refrigerant servicing equipment while ECV is running.
Failure to observe these warnings can result in injury to personnel.
Cover or plug openings immediately after removing line to prevent contamination. Remove
and replace tape as required.
Flow nitrogen through tube assembly when brazing or unbrazing to prevent damage to
components.
NOTE
This procedure covers the replacement of the accumulator, suction line vibration absorber
and low pressure switch LPS1.
Remove/disassemble only to the extent necessary to remove or replace defective
assemblies/components. Use standard maintenance shop practices/procedures.
a. Removal (Refer to Figure 3-22)
(1)
Remove insulation on accumulator tube assembly (1), vibration absorber (2) and accumulator (3)
to gain access to fittings.
(2)
Remove cable assembly 1A4A1W3 connector P4 (4) from low pressure cutoff switch LPS1 (5) on
accumulator tube assembly (1).
