IDLE
VALIDATION
SWITCH
PEDAL
POSITION
SENSOR
IVS
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| Vs | Closed Throttle (open) Range: | |||
DIODES |
| Open Throttle (full) Range: | ||||
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| SUPPLY | ||||
TEST | TEST | VOLTAGE |
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LOAD | LOAD |
| LOCK TAB |
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470 | 470 |
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PIN 6 OHM | OHM | V3 (LOGIC HIGH AT IDLE) |
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| POTENTIOMETER | ||
PIN 2 |
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| V2 (LOGIC LOW AT IDLE) |
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| SET VOLTAGE | ||
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PIN 1 |
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| AND PC. NO. |
| IVS GROUND |
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| SHOWN | |
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| HERE |
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| 5 |
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| VS |
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| 4 | (INPUT) | 6 | |
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| Vs | APS GROUND |
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PIN 5 |
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| V 3 | |
| SUPPLY |
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| VOLTAGE |
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PIN 3 |
| V1 |
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| .01µ F | (OUTPUT) |
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| LOCK TAB |
PIN 4 | APS |
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TEST LOAD | GROUND | 3 |
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| 1 | |
47000 OHM |
| V1 |
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| IVS GROUND | |
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| (OUTPUT) SIG1 | 2 |
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(IVS) V 2
FIGURE 8 - ET-2™ TREADLE ELECTRICAL TEST SCHEMATIC FOR THE CUMMINS CONNECTOR
INSTALLATION
1.Install the assembled
2.Reconnect the cable connector by plugging it into the potentiometer’s integral connector and pushing until the lock tab snaps into place.
DISASSEMBLY
The following instructions present a major disassembly of the
1.Remove the treadle cover (1).
2.Remove the pivot pin’s snap ring (8).
3.Remove the pivot pin (9) and the two nyliner bearings
(10)from the treadle’s exterior. Also remove the two nyliner bearings (10) from the mounting base.
4.Remove the pivot spring (11).
5.Remove the screws (3) that secure the potentiometer
(2)to the treadle. Remove the potentiometer.
6.Remove the lever shaft’s snap ring (5).
7.Remove the lever shaft (4) and the washer (7). Then remove the roller assembly (15), the inner washer (5), and the nyliner bearing (6) from the treadle. Separate the treadle from the mounting base.
8.The roller assembly consists of the lever, roller, two springs (12 & 13), and a spring support (14). Remove the springs and the spring support from the lever.
CLEANING & INSPECTION
1.Use mineral spirits or an equivalent solvent to clean all metal parts. Be sure to thoroughly dry the parts.
2.Inspect the treadle and mounting base for severe corrosion, pitting, or cracks. Replace as necessary. Superficial corrosion and/or pitting is acceptable.
3.Inspect the cable assembly for loose or frayed wires, physical damage, or any contaminants on the connectors. Check
ASSEMBLY
Refer to Figure 4 throughout the assembly procedure.
1.Install the four nyliner bearings (10) on the mounting base and treadle.
2.Place the treadle “ears” outside the mounting base “ears” so that the holes line up.
3.Install the pivot spring (11) into the base and treadle. The curved end of the spring fits into a small hole in the treadle, and the straight end fits into a small hole in the mounting base.
4.The pivot pin (9) should slide through the holes in the “ears” of the treadle and base assembly, then through the center of the spring. Secure the pin with its snap ring (8). Make sure the pivot spring is straight and is seated in its holes.
6