Service Manual

Multi Pro 5800 Page 7 − 43 ExcelaRate Spray System
Boom Section Valve and Agitation Valve Service
The Multi 5800 ExcelaRate spray system uses three (3)
boom section valves and an agitation valve. Each valve
is fully serviceable. Use the following procedure for ser-
vicing the boom section valves and the agitation valve.
IMPORTANT: Make sure to remove and neutralize
chemicals from spray components before disas-
sembly. Wear protective clothing, chemical resist-
ant gloves and eye protection during repair.
Disassembly (Fig. 42)
1. Locate the valve being serviced and remove either
the actuator fork and the actuator assembly or the screw
and knob from the valve.
2. Remove hoses, fittings, clamps and adapters as
necessary to access valve end caps.
3. Rotate the end caps counterclockwise (unscrew)
and remove the end caps.
4. Rotate the valve stem until the slot in the stem and
valve ball are in−line with the valve body and remove the
valve ball.
5. Remove the valve stem fork, seat, and remove the
valve stem assembly.
6. Inspect the valve seats (item 4). Replace compo-
nents as necessary.
Assembly (Fig. 42)
NOTE: Replace, do not reuse gaskets and O−rings.
Coat O−rings and gaskets with vegetable oil before
installation to reduce damage during assembly.
1. Apply silicone grease to seals and O−rings on stem
assembly. Install stem assembly, seat and fork.
2. Rotate the valve stem until the slot in the stem is in−
line with the valve body and install the valve ball.
3. Apply silicone grease to seals and O−rings on end
caps and install end caps. Tighten end caps until seated.
Do not over−tighten end caps.
4. Install hoses, fittings, clamps and adapters previous-
ly removed.
5. Install either the actuator and actuator fork or knob
and screw.
1. Valve body
2. End cap
(flanged − clamp)
3. End cap
(male − fork)
4. Seat (2)
5. O−Ring (2)
6. O−Ring (2)
7. O−Ring
8. Ball (on/off)
9. Stem fork
10. O−Ring (2)
11. Stem
12. Washer
13. Stem seat
Figure 42
1
2
4
5
6
7
8
9
10
11
12
3
4
5
6
13
2
7
3