Komatsu 830E Shop Manual page 239

d. From 74N to 710:
Read .09 ±.10 vdc.
3. With retard pedal depressed just until retard contactors pick up, measure the voltage between
the following circuits:
a. From 74N to 710:
Read 0.20 ±.20 vdc. If out of tolerance replace RET card.
b. From 54N to 710:
Read 2.60 ±.50 vdc. If out of tolerance, replace retard pedal potentiometer.
c. DDEC equipped trucks only:
Use the DDR to read PTO counts or measure voltages at circuits 510(+) to 952(-) shown
in the following table:
ACC
CARD
TZ6661 2.77 (approx.)
EB2635 3.63 (approx.)
EC1806 3.04 (approx.)
4. With retard pedal fully depressed, measure the voltage between the following circuits:
a. From 74N to 710:
Read 15.50 ±.25 vdc. If out of tolerance replace RET card.
b. From 54N to 710:
Read 12.50 vdc minimum. If out of tolerance replace retard pedal resistor.
c. DDEC equipped trucks only:
Use the DDR to read PTO counts or measure voltages at circuits 510(+) to 952(-) shown
in the following table:
ACC
CARD
TZ6661 2.77 (approx.)
EB2635 3.63 (approx.)
EC1806 3.04 (approx.)
5. Depress the throttle pedal fully, and again read the PTO Counts. If values change replace ACC
Card. Release throttle and retard pedals.
1.2.2 Electronic Retard Pedal; Fuel Saver Equipped Trucks and Current Production.
•
Refer to Section 1.1.2 for both, accelerator and retard pedal setup instructions.
E03012 2/02
PTO
VOLTS
COUNTS
150 ±2
162 ±2
162 ±2
PTO
VOLTS
COUNTS
150 ±2
162 ±2
162 ±2
Statex III Electrical Checkout Procedure
ACTION IF OUT OF TOLERANCE
Replace ACC card
Replace ACC card
Adjust Pot P2 on ACC card
ACTION IF OUT OF TOLERANCE
Replace ACC card
Replace ACC card
Adjust Pot P2 on ACC card
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