TM 10-3930-669-20 7-22.  ENGINE TEMPERATURE SWITCH REPLACEMENT. This task covers: a.  Removal b.  Installation INITIAL SETUP Tools and Special Tools Equipment Condition Tool Kit, General Mechanic's: Automotive Engine OFF (TM 10-3930-669-10) (Item 1, Appendix B) Parking brake applied (TM 10-3930-669-10) Wheels chocked (TM 10-3930-669-10) Batteries disconnected (Para 7-48) Materials /Parts Tags, Identification (Item 21, Appendix C) Washer, Lock (2) a.  Removal. NOTE Tag and mark all wires before disconnecting. (1) Lift  back  cover  (1)  and  remove  two  screws  (2), lock  washers  (3),  and  three  wires  (4,  5,  and  6) from switch (7).  Discard lock washers. (2) Remove  switch  (7)  from  engine  oil  filter  head (8). b.  Installation. (1) Install switch (7) on engine oil filter head (8). (2) Install three wires (4, 5, and 6) on switch (7) with two lock washers (3) and screws (2).  Lift cover (1). NOTE Follow-on Maintenance: •   Connect batteries (Para 7-48). •   Remove wheel chocks (TM 10-3930-669-10). END OF TASK 7-50

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