WINTERIZATION KIT, COOLANT HEATER REPAIR (CONTINUED)

WINTERIZATION KIT, COOLANT HEATER REPAIR (CONTINUED) - TM-9-2350-267-34_234

TM-9-2350-267-34 Hull Powerpack Drive Controls Tracks Suspension and Associated Components Carrier Ammunition Tracked Manual
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NOTE Heater control is automatic. A cycling switch reduces fuel flow to LOW when coolant inlet temperature exceeds 190°F. Fuel flow is returned to HIGH when temperate falls to 120°F. Overheat switch shuts off fuel flow when coolant temperature reaches 245°F. A Set up fuel control valve as shown. B Apply 24 vdc to solenoid leads. NOTE Timing must be exact. C Allow fuel to flow from outlet tube for a few seconds. D Place graduate under fuel outlet tube and start timing fuel flow. E Remove power from solenoid at end of timing cycle. F Weigh fuel in graduate (0.071 ± 0.005 lbs/min). G If fuel flow is not within tolerance, turn adjusting screw clockwise to increase rate, or counterclockwise to decrease rate. H Repeat steps B-E. I Disconnect electrical leads to restriction solenoid and repeat steps B-E. J Adjust for flow rate 0.036 ± 0.005 lbs/min. TA309835 10-5 TM 9-2350-267-34

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