Clark IC101 Fuel System Index:

## Operation Sequence
1. Drive Control
2. Battery
3. BI & Pump Motor
4. HM, Steering & SRO
5. F / R Contactors
6. Cont. Oper. & Capacitor
7. #1 REC ON, #5 REC ON
8. Capacitor / Reactor Oper.
9. #2 REC ON, #1 REC OFF
10. Flyback
11. ACC., TP, PMT
12. 1A Contactor
13. Plugging

## Checking Components
– Specific Gravity Test
– Check #1, #2, #5 RECs
– Check #3, #4 RECs
– Check Capacitor (IC)
– Check #22, #23, #24, #25 RECs
– Check Filter Mtg. Block
– Check Sensor
– Check Thermal Protector
– Check Reactor / Choke
– Card Adjustments
– Card Voltage Check
– Connector Plugs B & Z

## Test
1. Ground Fault Condition
2. Power Steer Idle Current
3. SCR Current Limit
4. 1A Free-Wheeling Current
5. 1A Time Delay
6. Creep Speed Motor Volts
7. Plugging Function

## Symptom Chart
1. Contactors will not close
2. Contactors close, no power, no hum, truck does not move in SCR
3. Contactors close, no power, have hum, truck does not move in SCR
4. Dir. Cont. close, full SCR hum and power with accel. in creep position
5. Dir. Cont. close, then pop open, PMT trips
6. One dir. cont. closes, other will not
7. 1A cont. will not close
8. 1A cont. will not close in SCR stall or going up ramp
9. Stiff plug or plug distance not adjustable
10. PMT trips when hyd. switches are activated
11. Power steer does not operate
12. Lift / Tilt does not operate