Toro Multi Pro 1750 - Bypass Valve Service (Serial Number above 315000000)

Multi Pro 1750 Page 6 − 37 Spray System
Bypass Valve Service (Serial Number Above 315000000)
The Multi Pro 1750 uses several bypass valves in the
spray system. Each valve is fully serviceable. Use the
following procedure for servicing the three (3) spray
boom bypass valves.
IMPORTANT: Make sure to remove and neutralize
chemicals from spray components before removing
the pressure relief valve. Wear protective clothing,
chemical resistant gloves and eye protection during
repair.
Disassembly (Fig. 23)
1. Locate the valve being serviced and remove the
knob fork and the knob assembly.
2. Hold the valve stem and rotate the knob counter-
clockwise (unscrew) and remove the knob.
3. Remove and discard the two (2) O−rings from the
valve stem.
4. Remove valve body forks and separate bypass
valves. Remove and discard O−rings.
Assembly (Fig. 23)
1. Install new O−rings and apply silicone grease to
O−rings during assembly.
2. Turn the knob onto the valve stem until the stem ex-
tends out of the top of the knob.
NOTE: The cut−out in the valve stem must open toward
the cross tube. If installed incorrectly, the bypass valve
will not regulate the product flow.
1. Bypass valve body
2. Knob
3. Knob fork
4. Valve stem
5. O−ring (2)
6. O−ring
7. Valve body fork (2)
8. Valve stem cut−out
9. Cross tube
Figure 23
1
2
3
4
5
6
7
8
9
3. Install the knob assembly in the valve body and se-
cure with the knob fork as shown.
4. Assembly bypass valves to each other and to mani-
fold with forks.
Spray
System