Trigger Sensor Adjustment; Distance Sensor Adjustment - Graco LineLazer IV 3900 Series Repair Parts List 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.
127
142
I
nside of tire
Fig. 14
66
Frame
120
Axle
Gear (67)
ti6400a
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).
Distance Sensor Detail
Distance
Sensor (66)
Tire
(120)
.638 in.
Gear (67)
311020 19