Caster Lever & Cable Operation; Operation; Maintenance; Caster Tire Replacement - Graco LineLazer GM 3500 Manuel D'instructions

Caster Lever and Cable Operation
CAUTION
The AccuTrack caster is factory-adjusted to track
in a straight line. It should not require adjustment
unless it is replaced. If a line is tracking poorly, check
for the following items before aligning the caster.
1. Even back tire pressure.
2. Even tension on the rear tire bearings (adjust
nuts (10) as needed.) See page 40.
3. Even tightness of the caster screws (F). See
Fig. 18.
4. Uneven painting surface.
5. Operator technique.

Operation

The normal operating mode of the AccuTrack
locked in the straight forward position.
1. For a free moving caster: Squeeze and hold the cast-
er lever (22).
2. To lock the caster in the free moving position,
squeeze the trigger, push in and hold the the button
(A) and release the trigger. See Fig. 17.
3. To return to the normal mode, squeeze and release
the caster lever and move the Line Lazer forward to
lock the caster in the straight position.
22
Fig. 17
1. Relieve pressure. See page 7.
2. Disengage the trigger cable. See page 21. Engage
the gun's trigger safety latch (B).
3. Loosen the gun holder knob (93).
4. Position the gun so the gun trigger is resting on the
remote trigger lever (A).
5. Be sure that the gun is mounted straight and then
tighten the knob (93) firmly.
6. Disengage the gun safety latch. Engage the remote
trigger cable. See page 21.
caster is
A
0018

How To Mount the Gun

Maintenance

See Fig. 18
Paint builds up on the caster triggering mechanism. To
keep it operating properly, use a grease gun at the grease
zerks (32A, 32B) to flush out the buildup – two to four
times a month, depending on use.

Caster Tire Replacement

Remove the setscrews (F) from the caster fork (E). Re-
move screw (G) and the tire (114a). Install the new tire
and the setscrews (F). Tighten the setscrews equally so
the tire has no play in it, but turns freely.

Caster Cable Tension Adjustment

1. Loosen the nut (A) located just outside the carriage
clamp (B).
2. With the pin (D) fully engaged in the caster fork (E),
pull back on the cable (2) to increase the cable ten-
sion, or push it forward to reduce the tension. Finger
tighten the nut (H). Tighten the nut (A) firmly.
Shown removed only
for visual purposes
Tighten equally so tire
has no play in it but
turns freely
32A
114a
G
Fig. 18

Caster Alignment

Do this adjustment only if the caster or tire is replaced,
or if no other solutions to poor tracking are found.
1. Loosen the two capscrews (87). Grasp the tire and
visually align it. Tighten the capscrews evenly. Move
the unit forward. If the caster appears straight, start
the unit (use water) and spray along a true straight
line. Continue adjusting as necessary. See Fig. 18.
95
Fig. 19
See Fig. 18.
See Fig. 18.
A
2
H
B
D
87
32B
D
E
F
0019
93
B
A
0020B