Removal (Fig. 6) IMPORTANT: Make sure to neutralize and remove chemicals from pump and hoses before loosening and removing spray system components.
4. Remove set screws from pump hub. Clean threads
of set screws and hub. 5. Apply anti–seize lubricant to pump shaft. Install key in shaft and slide pump hub onto shaft.
1. Park machine on a level surface, stop engine, engage parking brake, and remove key from the ignition switch.
6. Position pump on pump mounting bracket. Install cap screws and flange nuts to pump and mounting bracket. Leave fasteners loose.
2. Loosen hose clamp that secures suction hose (item 11) to hose barb (item 14). Pull suction hose from hose barb.
7. Place coupling spacers into rubber coupling. Install cap screws, flat washers, and lock nuts to secure rubber coupling to pump hub. Make sure that cap screw threads extend through lock nut.
3. Loosen hose clamp that secures pressure hose (item 8) to hose barb (item 5). Pull pressure hose from hose barb. 4. Remove lock nuts, flat washers, cap screws, and spacers that secure rubber coupling to pump hub. 5. Remove cap screws and flange nuts that secure pump to pump mount bracket. 6. Remove pump from machine.
8. Secure pump to mounting bracket by tightening cap screws and flange nuts. 9. Apply Loctite #242 (or equivalent) to threads of pump hub set screws. Install set screws into pump hub to secure hub to pump shaft. 10.Install pressure and suction hoses to correct barb fittings. Secure hoses with hose clamps.
7. Loosen set screws in pump hub. Pull hub from pump shaft. Locate and remove key from pump shaft.
1
8. Remove pressure dampener, tee (pressure), and elbow (pressure) from pump outlet. 9. Remove suction dampener and tee (suction) from pump inlet. 2
Installation (Fig. 6)
Spray System
NOTE: Coat all o–rings with vegetable oil before installation to reduce the chance of damage during assembly. 1. Apply PTFE tape to threads of tee (pressure), elbow (pressure), and tee (suction). Position new o–rings and gaskets on suction and pressure fittings that were removed during disassembly. 2. Install tee (suction) and suction dampener to pump inlet. Orientate tee toward rear of machine (Fig. 7).
Figure 7 1. Elbow (pressure)
2. Suction hose
3. Install elbow (pressure), tee (pressure), and pressure dampener to pump outlet. Orientate elbow toward rear of machine (Fig. 7).
Multi Pro 1200/1250
Page 6 – 13 (Rev. B)
Spray System