Ransburg Evolver Solvent Applicator 79190-XXXXXXXX - Manual (Page 42)

REMOVING GUN FROM THE
REAR MANIFOLD ASSEMBLY
(See Figure 10)
Anytime service is required within the gun shroud,
the gun must be removed from the rear manifold
assembly. After the gun is removed from the
robot, always move to a clear, clean work area to
remove the gun shroud and begin servicing.
1. Purge all fluid from the system and blow lines
dry with pushout air before the gun is removed.
2. All pressures must be removed, both air and
fluid, before removing the gun. Fluid pressure can
be removed by actuating the gun trigger with the
fluid regulator open.
3. Remove gun from robot by turning the retaining
ring counter-clockwise from the manifold robot
mounting plate (see Figure 10).
4. Remove spray head [1] as described previously
(see Figure 10).
Gun Disassembly
(See Figures 11, 12, and 13)
5. Remove four (4) screws [1] from mounting block
and pull block out of the upper manifold [9] as shown
in Figure 11.
6. Remove and inspect the o-rings [12, 13, and 37].
Replace if necessary (see Figure 11).
7. Remove retaining ring [22] by pulling straight up
as shown in Figure 11.
8. Remove the four (4) screws [28] from the shroud
halves. Carefully pry the shroud halves [30] apart
by placing a thin blade screwdriver in slot. Pull the
shroud half out at the top and up from the valve
manifold [3].
9. Loosen one end of the coiled fluid tube [29] by
removing the nut [14] and ferrules [15 and 16] from
tube fitting [4].
37
Evolver Solventborne Robotic Atomizers - Maintenance
10. Remove the two (2) screws [6] and the two (2)
screws [11] from the bottom of the valve body [3]
(see Figure 12). Inspect the two (2) o-rings [5] located
within the screws [6] and replace if necessary.
11. Carefully pull upward on the head manifold block
[9] which will disengage from the bottom valve as-
sembly block [3]. Inspect o-rings [7] and [34], replace
if necessary (see Figure 12).
12. Remove the two (2) connecting air rods [18]
and the two (2) trigger tie rods [19] by unscrewing
counter-clockwise. Remove and inspect the four (4)
studs [8] and [21] and the o-rings [35] and [7] and
replace if necessary.
13. Remove and inspect the coiled fluid tube by
removing the tube nut [25] and ferrule [26] from the
upper head manifold [9].
14. Release the cascade cable from the valve
manifold by loosening the set screw [17], pull cable
out of block, and cascade out of the upper head
manifold.
15. Reassemble in reverse order making sure to
align the cascade wire plug timing mark with the
timing mark on the lower valve block [3] as shown.
Tighten set screw [17].
16. Refer to Figure 13 to remove dump and pilot
valves. Using the valve removal tool [A], remove
the valve assemblies [2] and [32] by turning counter-
clockwise. Also use the same tool to remove the seat
[1]. When replacing parts lubricate o-rings. Torque
both the valve and seat to 15-20 lbs•in (1.7 - 2.0
Nm).
17. The dump line plugs and o-rings [20] and [24]
only need to be removed if the valve body becomes
plugged.
18. If removing or replacing the ground fluid fitting
[4] make sure when reassembling that the washer
makes contact with the protruding ground pin.
AA-03-02.11