Trigger Sensor Adjustment; Distance Sensor Adjustment; Gear Alignment; Sensor Height Adjustment - Graco LineLazer IV 3900 Repair And Parts Manual

Trigger Sensor Adjustment

Refer to Troubleshooting for trigger sensor adjust-
ment, and see Operation manual.

Distance Sensor Adjustment

Gear Alignment

1. Relieve pressure, page 7.
2. Fig. 14. Remove dust cap (142) from wheel.
Remove nut (127).
3. Remove wheel (120) from LineLazer.
4. Align gear (67) with sensor.
a. Pull gear out from wheel with gear puller.
b. Push gear in toward wheel with mallet.
142
Fig. 14
311020Y
66
127 120
Inside of tire
5. Install wheel (120) on LineLazer.
6. Install nut (127) until tight, then back off 1/4 turn.
Install dust cap (142) on wheel.

Sensor Height Adjustment

1. Remove wheel (120) from LineLazer.
2. Remove distance sensor (66).
3. Adjust sensor assembly height with two 17 mm nuts
of sensor so bottom surface of sensor is 0.638 +/-
0.020 from bottom surface of shield. Torque to 8 +/-
2 in-lb.
4. Reassemble distance sensor (66) and wheel (82).
Frame
Axle
ti6400a
Trigger Sensor Adjustment
Distance
Sensor
66
.638 in.
67
Gear
Distance Sensor Detail
120
Tire
19