5. IMPROPER GOVERNOR SYSTEM OPERATION. (Model 609-C)

Table 3-1. Direct Support Troubleshooting Table

6. IMPROPER GOVERNOR OPERATION. (Model US636HCCD-1)

TM-10-4320-344-24 Pump Assembly Water 600 GPM Model 609-A (NSN 4320-01-184-7494) Model 609-C (NSN 4320-01-261-6470) Model US636HCCD-1 Manual
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TM 10-4320-344-24 Table 3-1. Direct Support Troubleshooting Table. (Continued) MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 4. IMPROPER GOVERNOR OPERATION. (Model 609-A) (Continued) Step 3. Check to see if governor output shaft lever on the governor actuator makes a quick correction at fuel throttle position without a change in load. a. If lever makes a quick connection check wiring for proper shielding (paragraph 2.17). b. If lever does not make quick correction check wiring for proper connections and shorts (paragraph 2.17) . c . Replace wiring harness (paragraph 2.17). 5. IMPROPER GOVERNOR SYSTEM OPERATION. (Model 609-C) Step 1. Check and see if governor linkage is stuck, loose or out of adjustment. Adjust or replace governor linkage as necessary (paragraph 3.8.7). Step 2. a . b . Step 3. a . b . Step 4. a . b . Step 5. b. Step 6. b . Check for loose electrical connections and open wires, using multimeter. Tighten loose electrical connections. Repair or replace wiring as necessary (paragraph 2.17). Disconnect cable at governor control module. Using multimeter, check for magnetic pick-up unit signal between pins K an J. (Signal will be a small AC voltage). If signal is present go to step 4. If signal is not present replace magnetic pick-up unit (paragraph 3 . 8 . 5 ) . Disconnect cable from governor control module. Using multimeter, measure resistance between pins C and H on cable while turning auto throttle rheostat, R4, through its full range. If resistance varies as auto throttle rheostat, R4, is turned through its full range go to step 5. If resistance does not vary as auto throttle rheostat, R4, is turned throughout its full range replace auto throttle rheostat, R4 (paragraph 2 . 16 . 2 2 ). Using multimeter, check auto throttle switch, S2, for open/shorted c o n t a c t s. If no open/shorted contacts are present go to step 6. Replace auto throttle switch, S2, if defective (paragraph 2.16.18). Using multimeter, check pressure/speed switch, S3, for open/shorted c o n t a c t s. If no open/shorted contacts are present go to step 7. Replace throttle select switch, S3, if defective (paragraph 2.16.18). 3-4 a . a.

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