Position Sensor - Remove and Install - 374F and 390F Stick and Boom Rotary Position Sensor Remove and Install
Removal Procedure For Stick Rotary Position Sensor
374F Stick Rotary Position Sensor
- Remove the bolts (1) and a grommet (2) (back of cover, not shown). Remove the guard assembly (3).
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Illustration 2 g06066084 Stick Rotary Position sensor rod assembly for 374F
(4) 309-5695 Rod Assembly
(5) 9X-2039 Screw - Truss Head
(6) 8T-4121 Washer - Hard - Remove Rod Assembly (4) by removing the screw (5) and washer (6) from each end.
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Illustration 3 g06066107 Stick Rotary sensor group and lever assembly for 374F
(7) 131-3983 Bolt
(8) 8T-4224 Washer - Hard
(9) 345-1948 Sensor Group - Position
(10) 349-2188 Lever Assembly - Disconnect the electrical harness for the sensor (arrow). Remove the four bolts (7) and four hard washers (8). Remove the sensor group (9) with lever assembly (10).
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Illustration 4 g06066128 Location of Stick Rotary Sensor mounting plate for 374F.
(11) 447-1709 Bolt
(12) 451-2175 Washer - Hard
(13) 398-4263 Plate Assembly - Remove bolts (11) and hard washers (12). Remove plate assembly (13).
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| Illustration 1 | g06063619 |
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Illustration of the guard covering the Stick Rotary position sensor for 374F (1) 135-8572 Bolt (2) (2) 9D-3769 Grommet (not visible) (3) 349-2190 Guard Assembly | |
390F Stick Rotary Position Sensor
- Remove the bolts (1) and a grommet (2) (back of cover, not shown). Remove the guard assembly (3).
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Illustration 6 g06066084 Stick Rotary Position sensor rod assembly
(4) 309-5695 Rod Assembly
(5) 9X-2039 Screw - Truss Head
(6) 8T-4121 Washer - Hard - Remove Rod Assembly (4) by removing the screw (5) and washer (6) from each end.
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Illustration 7 g06066107 Stick Rotary sensor group and lever assembly
(7) 131-3983 Bolt
(8) 8T-4224 Washer - Hard
(9) 345-1948 Sensor Group - Position
(10) 415-7071 Lever Assembly - Disconnect the electrical harness for the sensor (arrow). Remove the four bolts (7) and four hard washers (8). Remove the sensor group (9) with lever assembly (10).
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Illustration 8 g06066128 Location of Stick Rotary Sensor mounting plate.
(11) 447-1709 Bolt
(12) 451-2175 Washer - Hard
(13) 415-7074 Plate Assembly - Remove bolts (11) and hard washers (12). Remove plate assembly (13).
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| Illustration 5 | g06063619 |
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Illustration of the guard covering the Stick Rotary position sensor for 390F (1) 135-8572 Bolt (2) (2) 9D-3769 Grommet (not visible) (3) 415-7077 Guard Assembly | |
- Install the rotary position sensor in the reverse order of removal.
Removal Procedure For Boom Rotary Position Sensor
The boom rotary position sensor is found at the base of the boom attachment, where the boom and the machine body meet.
374F Boom Rotary Position Sensor
- Remove Rod Assembly (1) by removing the bolt (2) and washers (3) from each end. (Two washers for each bolt.)
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Illustration 10 g06066216 (4) 131-3983 Bolt
(5) 8T-4224 Washer - Hard
(6) 345-1948 Sensor Group
(7) 450-7789 Lever Assembly - Remove the parts indicated above to release the position sensor.
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Illustration 11 g06067590 Location of boom position sensor mounting plate for 374F.
(8) 447-1709 Bolt
(9) 451-2175 Washer
(10) 398-4250 Mounting Plate - Remove the bolts (8) and washer (9) to release the mounting plate for the boom position sensor.
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| Illustration 9 | g06066182 |
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Remove the rod assembly for the boom section of the front linkage for 374F. (1) 309-5695 Rod Assembly (2) 8T-4196 Bolt (3) 8T-4121 Washer - Hard | |
390F Boom Rotary Position Sensor
- Remove the bolts (2) to release the cover plate.
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Illustration 13 g06066527 Exposed view of the boom position sensor for model 390F Excavator..
(4) 9X-2040 Screw
(5) 8T-4121 Washer
(6) 309-5695 Rod Assembly - Remove the bolts (4) and washers (5) to release the rod assembly.
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Illustration 14 g06066548 Before removing the sensor, disconnect the electrical connector for the sensor (circled at bottom of illustration).
(7) 131-3983 Bolt
(8) 8T-4224 Washer
(9) 3S-2093 Strap
(10) 451-1816 Lever Assembly
(11) 345-1948 Sensor Group - Remove the strap that secures the electrical connector (9). Remove the bolts (7) and washers (8) that secure the sensor. Remove the sensor (11) and lever assembly (10).
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Illustration 15 g06066566 Illustration of the mounting plate for the boom position sensor.
(12) 8T-6868 Bolt
(13) 8T-4223 Washer
(14) 451-1817 Plate Assembly - Remove the bolts (12) and washers (13) securing the mounting plate. Remove the mounting plate (14) after the bolts have been removed.
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| Illustration 12 | g06066518 |
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Illustration of the boom position sensor location for model 390F Excavator. (1) 451-1819 Guard Assembly for Sensor (2) 135-8572 Bolt | |
- Install the rotary position sensor in the reverse order of removal.
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