TM-9-2815-220-34 Direct Support Manual for AVDS-1790-2C and AVDS-1790-2D Engines Download

M1trunc1ion 15. , .. , Generator Abnormal Operation Not char g ing: (Indicator reads in "yellow" same as batlery reading with engine stoppeJ anti master switch "ON". 15.2 Undercharging: (Maximum indicator reading in "yellow" during vehicle operation). 15.2 Overcharging: (Indicator reads right "red"). 15.S Discharging: (Indicator reads in left "d") 15.4 Erratic charging: (Indicator fluctu· at) 16. Intake Manifold Heater Abnormal eration 16.l Heater Inoperative: TM 9·2815-220·34 bie 2·2. Troubleshootin1 edures - Continued Prhl•<aU� a. Battery cables or terminals lꝏse, cor · red, broken or disconnected (connec- tor nuts not lightened). b. fective electrical circuits or voltage regulator. c. Generator failed. d. Fail generator drh·e gear aembly. a. , corred or grounded battery ter· minals or cables. b. Defective baller ies. c. Voltage regulator defective. d. Failed generator drive gear s embly. a. Loose or corred battery terminals, or grounded cables. b. Defective batteries. c. Voltage regulator defective. a. Heavy load or "short" in vehicle system. a.  or corred battery terminals, grounded cables, or deftive battery. a. Electrical or fuel system malfunction. rrth·c action al. Check battery condition. a2. Inspect and repair cables and ter· minals. Refer to pertinent vehicle technical manual. bl. Check circuits and voltage regulator. Refer to peinent vehicle technical manual. b2. Repair or repl3ce as necesry. Refer to pertinent vehicle or generator technical manual. cl. Check circuits and generator. Refer to pertinent vehicle or generator technkal manual. c2. Hepair and replace as nece. Refer lo pertinent vehicl e technical manual. c3. Refor to DT-13.6. c4. *Rep Ince generator (par 2-19). Clean generator oil drain l ub of obslru tions (model AVDl 790-2C only). di. •Refer lo DT-13.7. . •Repla drive gear asmbly {para 3-31). a. Inspect, clean, tighten, repair or replace as neceary. Refer to perti- nent \•chicle technical manual. bl. Check individual battery cells. Refer to pertinent vehicle technical manual. b2. Replace batteries. Refer to pertinent ,·chicle technical manual. c. Inspect voltage regulator and replace if necessary. Refer to pertinent vehi· clc technical manual. di. •Refer to DT-13.7. . •Replace drive gear asmbly (para 3-31). a. Inspect, clean, tighten, or repair as necessary. Refer to pertinent vehicle technical manual. b. Check individual battery cells. Replace defective batteries. Refer lo perti- nent vehicle technical manual. c. Inspect voltage regulator and replace if necessary. Refer to pertinent vehi- cle thnical manual. a. Check electrical systm circuits. Refer to pertinent \•chicle technical manual. a. Inspect, clean, tighten, or repair  necessary and check batteries. Refer lo pe rli nent vehicl e techni cal manual. a. Check healer operation. Refer to DT-14. Repair or replace defective parts  indicated by tts. Change 3 2-21