Komatsu 830E - Page 239

E03012 2/02 Statex III Electrical Checkout Procedure E3-9
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:
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:
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.
ACC
CARD
VOLTS
PTO
COUNTS
ACTION IF OUT OF TOLERANCE
TZ6661 2.77 (approx.) 150 ±2 Replace ACC card
EB2635 3.63 (approx.) 162 ±2 Replace ACC card
EC1806 3.04 (approx.) 162 ±2 Adjust Pot P2 on ACC card
ACC
CARD
VOLTS
PTO
COUNTS
ACTION IF OUT OF TOLERANCE
TZ6661 2.77 (approx.) 150 ±2 Replace ACC card
EB2635 3.63 (approx.) 162 ±2 Replace ACC card
EC1806 3.04 (approx.) 162 ±2 Adjust Pot P2 on ACC card