![background image](http://html1.mh-extra.com/html/thermo-king/t-1000r/t-1000r_maintenance-manual_1104339122.webp)
Electrical Maintenance
8-2
ALTERNATOR CHARGING SYSTEM DIAGNOSTIC PROCEDURES
General Information
Poor charging performance may not be caused by a bad alternator. The following conditions can cause improper battery
charging, even with a good alternator.
• A problem may exist in the 2A output circuit from the alternator to the battery. Check for an open 2A circuit, loose
connections, defective battery cables or dirty battery terminals.
• The battery must be in good condition and capable of accepting a charge. Check for a damaged battery, correct electrolyte
level, and loose or corroded connections.
• The alternator charging output will be low if the alternator belt or pulleys are defective or the belt is not properly adjusted. Be
sure the belt is not loose or cracked and the pulleys are the correct size and in good condition.
• The excitation circuit (EXC circuit) must supply voltage to the excite terminal of the alternator.
• The sense circuit (SENSE circuit) must supply voltage to the sense terminal of the alternator.
• The alternator must be properly grounded.
• The unit control circuits or installed accessories may be drawing excessive current.
• An overcharged battery is usually caused by a defective voltage regulator.
Alternator Identification
• These units use Thermo King Alternators (see below), which are painted black.
1.
B+ Terminal (Positive Output - 2A Wire)
5.
F2 Terminal (Do Not Ground)
2.
B- Terminal (Negative Ground - CH Wire)
6.
Voltage Regulator and Brush Assembly
3.
S Terminal (Regulator Sense - 2 Wire)
7.
W Terminal (AC Output)
4.
L Terminal (Regulator Excite - 7K Wire)
Thermo King Alternator Terminal and Component Locations
1
7
3
4
5
2
6
Summary of Contents for T-1000R
Page 14: ...Safety Precautions 2 6 Warning Decals 2e24151g0 ...
Page 34: ...Maintenance Inspection Schedule 4 10 ...
Page 57: ...Unit Description 5 23 Purge Mode UT Series 1 3 4 5 2 ...
Page 67: ...Unit Description 5 33 Zone 1 Cool and Zone 2 Cool UT SPECTRUM Units ...
Page 69: ...Unit Description 5 35 Purge Mode UT SPECTRUM Units ...
Page 71: ...Unit Description 5 37 Zone 1 Cool and Zone 2 Heat UT SPECTRUM Units ...
Page 72: ...Unit Description 5 38 ...
Page 74: ...Diesel Electric Menu 6 28 Adjust Brightness 6 29 Time 6 30 ...
Page 120: ...Operating Instructions Standard HMI 7 18 ...
Page 152: ...Engine Maintenance 9 14 T Series Fuel and Oil System Components TK 376 ...
Page 154: ...Engine Maintenance 9 16 T Series Fuel and Oil System Components TK 270 ...
Page 156: ...Engine Maintenance 9 18 UT Series Fuel System Components AMA768 ...
Page 172: ...Engine Maintenance 9 34 T Series Engine Mounting Components for 2 Cylinder Engine ...
Page 184: ...Engine Maintenance 9 46 ...
Page 238: ...Refrigeration Maintenance 10 54 ...
Page 246: ...Clutch Maintenance 11 8 ...
Page 258: ...Structural Maintenance 12 12 ...
Page 264: ...Mechanical Diagnosis 13 6 ...
Page 265: ...14 Electric Standby Diagnosis ...
Page 268: ...Electric Standby Diagnosis 14 4 ...
Page 269: ...15 Refrigeration System Diagnosis ...
Page 272: ...Refrigeration System Diagnosis 15 4 ...
Page 280: ...Remote Evaporators 16 8 ...