TM 5-4520-256-14
3-9. TROUBLESHOOTING - Continued
Table 3-2. Unit Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
13.
HEATER FAILS TO OPERATE - Continued.
Wrap wires X36A16N and X15C16V together with electrical tape (Appendix E, item 18) making sure wire
leads are not exposed.
Secure taped wire ends to wire harness with tiedown strap (Appendix E, item 19).
Using a common screw driver, remove the cover of the combustion control relay K-8 and check the
contacts for burns. If any burns are present, replace the K-8 relay (para 3-17).
Install filters (para 3-10).
If the failure was in the R1 rectifier or TT hour meter, the heater will now operate in this manner. If
malfunction still exists, notify Direct Support Maintenance.
Rectifier and hour meter are not required for Army use and should be left disconnected.
Change 7 3-16.4
