ELECTRICAL COMPONENTS (YUM2E)
8-74
Use the voltmeter to monitor the overall voltage
decrease of the pack and the decreasing voltage
of each individual battery during testing.
Individual batteries that decrease at a faster rate
are the weaker batteries in the pack. Note the
weaker batteries as they will require additional
measurement after the discharge tester shuts
off.
Once the weaker batteries are identified, they
need to be replaced with batteries of compara-
ble age and strength of the remaining pack.
Remember that 60 minutes is the industry stan-
dard considered adequate for 36 holes of play at
26.7 °C (80 °F) and that ambient temperature
has an effect on discharge times.
When temperatures are low, discharge times
decrease. The “Battery Discharge Chart” on
page 8-76 may be used for predicting the effects
on discharge times.
The Lester 36/48 V Battery Discharge Unit has
the following features:
• Specifically Designed for Golf Batteries
• Simple to Operate
• Tests 36 V and 48 V Battery Systems
• Microprocessor Controlled Logic
• Automatic Test Cycle, Disconnects when
Complete
• No AC Power Required
• Available with Translated Graphics and Manu-
al
• Bright LED Display
Lester Battery Discharge units provide accurate
vehicle battery testing for both 36 V and 48 V
systems. The automatic test regime discharges
batteries at the appropriate BCI rate and dis-
plays the run time in minutes at the end of the
test. The test can be restarted momentarily to al-
low for measuring individual cell voltages.
The Lester Battery Discharge unit requires no
AC power to operate and requires little training
for operation. A multifunction display and micro-
processor control logic board ensure the accu-
rate measurement and display of the information
you need. It can be programmed to shut off with
time or voltage. Discharge data can be viewed
on the display or with a terminal or computer.
Large 500 A alligator clips, heavy duty DC ca-
bles, and a durable 18G powder coated steel
case ensure years of trouble free use. Repair
parts are also available, should the unit ever be-
come damaged.
Private branding and translation into other lan-
guages is available, with a minimum order.
Scheduling Discharge Load Test
Test each car once during the first year of oper-
ation and twice each succeeding year. If your
course exceeds the national average of 250
rounds each year, then your discharge test
schedule must be increased accordingly. Con-
sult your Yamaha service representative for help
with schedule adjustments.
If you start out discharge testing an older fleet
with questionable batteries, then at least 10%
(i.e., 10 cars out of 100) should be tested. These
results will give you a feel for your replacement
battery needs. Widespread failures or lack of 36-
hole performance in the second year is not nor-
mal. It is normal to have a few battery failures on
cars in their third or fourth year of service.
Before testing, complete the following tasks:
1. Fully charge the batteries (a full charge cy-
cle).
2. Inspect all cables and connections.
3. Check the water level in each cell and add
water as necessary.
4. Start the charger and let it finish charging
again.
5. Let the batteries cool for five minutes.
The following instructions are specifically for the
Lester 17770 Battery Discharge Unit. You will
also need a thermometer and a voltmeter.
1. Attach the Lester 17770 Battery Discharge
Unit to the battery pack, remembering to ob-
serve polarity.
TIP
Heavily coated battery terminals may not pro-
vide good electrical connections. Clean if neces-
sary.
Summary of Contents for UMAX
Page 1: ...SERVICE MANUAL UTILITY VEHICLE J0F F8197 E1 YUM1A YUM2A YUM2E LIT 19616 A0 37...
Page 2: ......
Page 6: ......
Page 8: ......
Page 25: ...GENERAL SPECIFICATIONS 2 2 1174 kg 2589 lb YUM2E Hill claiming ability 20 YUM1A 15 YUM2A YUM2E...
Page 33: ...ELECTRICAL SPECIFICATIONS YUM1A YUM2A 2 10 USB fuse 5 A...
Page 43: ...TIGHTENING TORQUES 2 20...
Page 46: ...CABLE ROUTING 2 23 YUM1A Front and rear A B C 1 1 1 1 2 3 4 3 4 1 2 3 4 5 6...
Page 48: ...CABLE ROUTING 2 25 YUM1A Left side A B D C 1 2 3 4 4 4 4 5 6 7 8 9...
Page 50: ...CABLE ROUTING 2 27 YUM1A Brake and throttle cables A B 1 3 2 3 1 2 2 4 5...
Page 52: ...CABLE ROUTING 2 29 YUM1A Shift cables 1 2 3 1 2 4 1 2...
Page 56: ...CABLE ROUTING 2 33 YUM2A Front and rear A B C D 1 1 1 1 1 2 2 3 3 4 4 3 4 5 6 7...
Page 58: ...CABLE ROUTING 2 35 YUM2A Left side A B C D 1 2 3 4 4 4 4 6 7 8 9 10 5...
Page 60: ...CABLE ROUTING 2 37 YUM2A Brake throttle and shift cables A A B C D 1 1 2 3 3 4 5 4 5 6 6 7 8 9...
Page 62: ...CABLE ROUTING 2 39 YUM2E Frame top view A A B 1 2 3 4 5 6 7 C D E E 6 6 6 8 9 10 11 12...
Page 64: ...CABLE ROUTING 2 41 YUM2E Front and rear 1 1 2 3 4 3 A...
Page 66: ...CABLE ROUTING 2 43 YUM2E Left side B 2 1 3 4 5 6 7 8 9 10 11 A 9...
Page 68: ...CABLE ROUTING 2 45 YUM2E Brake cable A A B C 1 2 4 3...
Page 70: ...CABLE ROUTING 2 47...
Page 73: ......
Page 96: ...4 YEAR CHECKS 3 23...
Page 99: ......
Page 134: ...FRONT SUSPENSION COMPONENTS 4 35 4 3 1 2 5 a...
Page 138: ...REAR SUSPENSION COMPONENTS 4 39...
Page 174: ...CRANKSHAFT AND PISTON 5 35...
Page 196: ...TRANSMISSION YUM1A YUM2A 7 13 Refer to CHECKING THE SHIFT LEVER YUM1A YUM2A on page 3 8...
Page 202: ...TRACTION MOTOR YUM2E 7 19...
Page 205: ......
Page 217: ...CHARGING SYSTEM YUM1A YUM2A 8 12...
Page 223: ...LIGHTING SYSTEM YUM1A YUM2A 8 18...
Page 227: ...LIGHTING SYSTEM YUM2E 8 22...
Page 233: ...SIGNALING SYSTEM YUM1A YUM2A 8 28...
Page 243: ...FUEL INJECTION SYSTEM YUM1A YUM2A 8 38...
Page 247: ...FUEL PUMP SYSTEM YUM1A YUM2A 8 42...
Page 284: ...ELECTRICAL COMPONENTS YUM2E 8 79...
Page 313: ...PC GENIUS GOLF CAR PROGRAMMING SYSTEM YUM2E 9 28...
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