Issue:
RTHC Terminal Replacement/Compressor Separation (CHHC)
Resolution:
Field Modification:
Select two of the motor housing-rotor housing bolt holes (opposite sides of the compressor). Tap each selected hole (rotor-housing) with M24x3 tool. Tap the hole the full depth of the flange on the rotor housing. Make sure you do not run this tap into the motor-housing hole. This will give you two jacking holes. Install a rod slightly smaller than the I.D. of the original threaded bolt hole (either M16 or M20). The length of this rod should extend from the bottom of the hole to the middle of the flange hole in the rotor housing. Install a M24x3 bolt. See the Original and Field Modified attached drawings.
Place the compressor on a flat surface such as sheet metal. Put some oil on the sheet metal surface. The compressor has machined surfaces on the casting and this will aid in disassembly. See the attached drawing. Separate the compressor with the Jacking Bolt(s). The bolts need to be turned simultaneously or the castings may bind. When separating and reassembling the compressor, pieces of All-thread may be used as guides.
Caution: Once the rotor housing-motor housing is separated ensure that NOTHING gets into the exposed rotors and housing! Cover separated components before movement!
Caution: DO NOT remove the motor rotor as Locktight is used during manufacturing, which can result in motor rotor damage!
Re-assembly requires the opposite procedure.
Once the motor housing-rotor housing is ready to be reassembled, remove the Jacking Bolt(s), Rod, and re-install the motor-rotor housing flange bolts for re-assembly. Your compressor will have either M16 or M20 mounting bolts, depending on the compressor size.
Torque the bolt(s) (motor-rotor housing) to:
M16 Bolts 175 ft-lb.
M20 Bolts 325 ft-lb.
Separation of the compressor for Motor Terminal Replacement or Field Installation will require the replacement of the Rotor-Motor Housing Gasket. If the Motor Terminals are to be replaced, use the following torque values:
Torque specification for the motor terminals:
Terminal to Housing 100 ft-lb.
Motor Lead to Terminal 40 ft-lb.
Starter Lead to Terminal 40 ft-lb.
Notes:
Changes:
Other Question/Problem/Cause Statements:
- RTHC Terminal Replacement/Compressor Separation
Facts:
- RTHC (Pueblo)
Document Identifier: DOC-74503
WARNING:
Information in this article is intended for use by individuals possessing adequate backgrounds of electrical and mechanical experience and who comply with all federal, state, and local laws, rules, orders, or regulations related to the installation, service, or repair of a heating or central air conditioning product. Any attempt to install, service, or repair a heating or central air conditioning product may result in personal injury and/or property damage. The manufacturer or seller cannot be responsible for the interpretation of the information contained herein, nor can it assume any liability in connection with its use.