TM-9-2350-261-20-1 Unit Maintenance Manual Volume 1 M113A2 M577A2 M1064 M1068 M1059 M901A1 Download
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TM 9-2350-261-20-1 COOLANT HEATER MALFUNCTIONS — Continued 0070 00 4Y 1. Check to see if HEATER ON indicator comes on in less than 3 minutes. 2. Does HEATER ON indicator come on in less than 3 minutes? 4YN GO TO HY (PAGE 0070 00-9) 5Y 1. Turn HEATER SWITCH to ON. Do not stop at OFF position. 2. Does blower stay ON? 5YN GO TO IY (PAGE 0070 00-10) 6Y 1. Run heater on HI for 10 minutes. 2. Feel exhaust temperature. 3. Does heater continue to produce hot exhaust for 10 minutes? 6YN GO TO JY (PAGE 0070 00-11) 7Y 1. Check to see if flame detector switch has been adjusted. 2. Has flame detector switch been adjusted? 7YN 1. Adjust flame detector switch (WP 0636 00 or WP 0637 00). 2. Verify no faults found. 8Y 1. Replace flame detector switch (WP 0636 00 or WP 0637 00). 2. Verify no faults found. 0070 00-2