BENDIX BW1837 manual Assembly, Position Sensor

3.Inspect the cable assembly for loose or frayed wires, physical damage, or any contaminants on the connec- tors. Replace as necessary.

ASSEMBLY

1.Securely clamp the treadle mounting plate.

2.(a) For Detroit Diesel Potentiometers: Align the drive slot, and engage the potentiometer the drive tang at the end of the drive shaft (see Figure 4). Rotate the

potentiometer clockwise until the first set of mounting holes align. Secure using two screws: torque to 25 (±5) in. lbs.

(b)For Caterpillar Position Sensor: Aligning the drive slot, the position sensor engages the drive tang at the end of the drive shaft (see Figure 4). Rotate the position sensor clockwise until the first set of mounting holes align. Secure using two screws : torque to 20 (±2) in. lbs.

DIGITAL
VOLT/
OHM
METER	POTENTIOMETER
	PC. NO. ON THIS SURFACE

POWER

SUPPLY

(9-16 VDC)

PIN C

300,000 OHM RESISTORGROUND TEST LOAD

PIN B	POTENTIOMETER
VOUT
(OUTPUT)

PIN A

Closed Throttle (open) Range: 7-18%VREF

(INPUT)

Open Throttle (full) Range: 74-84%

FIGURE 6 - ELECTRICAL TEST SCHEMATIC FOR THE DETROIT DIESEL CONNECTOR

Closed Throttle (open) Range: 10-20%

Open Throttle (full) Range: 75-90%

	PIN A VREF
	(INPUT)
	2000 OHM ±5%
	RESISTOR
PEDAL	PIN B
POSITION
SENSOR	VOUT
(PWM)	(OUTPUT)
	(CABLE)
.001µF	47,000 OHM ±5%
	RESISTOR
	POSITION SENSOR
	PIN C
	GROUND
	Caterpillar output voltage is Pulse Width Modulated

FIGURE 7 - ELECTRICAL TEST SCHEMATIC FOR THE CATERPILLAR CONNECTOR

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