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Sevcon Troubleshooting
Page 13
Electrical Troubleshooting
Test 7. FORWARD AND REVERSE SWITCH FAULT
Turn the key switch ON, place the forward and reverse switch in the center OFF position and
perform the following tests:
TEST 7.1:
Referencing battery positive, test the voltage on the center
terminal of the F&R switch (Black wire).
If the voltage equals battery volts, then skip ahead to
test #7.2.
If the voltage does not equal battery volts, then check
the wire from the F&R switch to the battery voltage circuit
breaker.
Stop trouble shooting here and repair the problem. When
the repair is completed, completely retest the vehicle before
lowering the drive wheels to the ground.
TEST 7.2:
If the vehicle does not travel in reverse, skip ahead to
test #7.3.
Place the forward and reverse switch in the FORWARD
position.
Referencing battery positive, test the voltage at the Blue/Black
wire on the F&R switch.
If the voltage equals battery volts, skip ahead to test
#7.4.
If the voltage does not equal battery volts, then the F&R
switch has failed.
Stop trouble shooting here and repair the problem. When
the repair is completed, completely retest the vehicle before
lowering the drive wheels to the ground.
After any repairs are made, completely retest
the vehicle before lowering the drive wheels to
the ground. Failure to retest the vehicle could
result in unexpected movement of the vehicle
resulting in injury or property damage.
This troubleshooting guide is written in
sequential order. All tests must be performed in
the order that they are written. Starting in the
middle or skipping sections when not instructed
to do so may lead to invalid test results.
Summary of Contents for B0-248-36
Page 2: ......
Page 6: ...TAYLOR DUNN...
Page 76: ...Maintenance Service and Repair Steering Page 22 Exploded View of Steering Gear...
Page 102: ...TAYLOR DUNN...
Page 138: ...TAYLOR DUNN...
Page 144: ...TAYLOR DUNN...
Page 156: ...TAYLOR DUNN...
Page 159: ...Sevcon Troubleshooting Page 3 Electrical Troubleshooting Identifying Your Controller...
Page 178: ...TAYLOR DUNN...
Page 210: ...Illustrated Parts Parts Page 2 Part number not available at time of printing Front Axle...
Page 212: ...Illustrated Parts Parts Page 4 Part number not available at time of printing Steering Knuckle...
Page 214: ...Illustrated Parts Parts Page 6 Part number not available at time of printing Front Brakes...
Page 216: ...Illustrated Parts Parts Page 8 Part number not available at time of printing Steering Linkage...
Page 228: ...Illustrated Parts Parts Page 20 Part number not available at time of printing Rear Brakes...
Page 230: ...Illustrated Parts Parts Page 22 Part number not available at time of printing Brake linkage...
Page 234: ...Illustrated Parts Parts Page 26 Part number not available at time of printing Motor...
Page 278: ...Illustrated Parts Parts Page 70 Part number not available at time of printing Hitches...
Page 279: ...Illustrated Parts Parts Page 71 Part number not available at time of printing...
Page 280: ...Illustrated Parts Parts Page 72 Part number not available at time of printing...
Page 281: ...APPENDIX A Special Tools...
Page 290: ...Model B 1 00...
Page 291: ......