Multi Pro 5700 - Toro
Multi Pro 5700 - Toro
Multi Pro 5700 - Toro
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Disassembly (Fig. 9)<br />
IMPORTANT: Make sure to remove and neutralize<br />
chemicals from pump before disassembly. Wear<br />
protective clothing, chemical resistant gloves, and<br />
eye protection during pump repair.<br />
NOTE: Many pump components can be easily reversed.<br />
During disassembly, make note of component<br />
position (e.g. crankshaft, valve chamber) to assure correct<br />
assembly.<br />
1. Remove two (2) hex bolts that retain valve chamber<br />
to pump. Separate valve chamber from pump.<br />
D. Position dust plate and felt seal on both ends of<br />
crankshaft.<br />
IMPORTANT: If connecting rod position is incorrect,<br />
pump will not operate properly.<br />
E. Slide crankshaft assembly into pump casing. The<br />
rear connecting rod should be positioned to the left<br />
side and the connecting rod closest to you to the right<br />
side (Fig. 10).<br />
2. Place second pump casing onto assembly. Pump<br />
casing surfaces should mate together.<br />
2. Remove inlet and outlet valves and o–rings from<br />
each diaphragm cover. Note orientation of valves. Discard<br />
valves and o–rings. Clean valve and o–ring seats<br />
in the valve chambers and diaphragm covers.<br />
3. Remove hex bolts that secure diaphragm covers to<br />
pump. Remove diaphragm covers.<br />
4. Remove hex bolt, washer, nylon washer, diaphragm,<br />
and diaphragm back disc from each connecting rod.<br />
Discard diaphragms.<br />
2<br />
1<br />
5. Remove five (5) hex bolts and nuts that secure pump<br />
casing halves together. Note location of two (2) longer<br />
hex bolts. Carefully separate pump casing halves.<br />
Figure 10<br />
6. Clean grease from bottom of housing and check con- 1. Closest connecting rod (to right side)<br />
2. Rear connecting rod (to left side)<br />
dition of bearings on crankshaft. If bearings require replacement,<br />
remove and disassemble crankshaft:<br />
A. Remove crankshaft assembly from pump casing.<br />
B. Slide felt seal and dust plate from both ends of<br />
crankshaft.<br />
1<br />
C. Loosen bolt and hex nut that secure connecting<br />
rods to crankshaft. Slide connecting rods from crankshaft.<br />
1<br />
Spray<br />
System<br />
D. Press ball bearings from crankshaft.<br />
Assembly (Fig. 9)<br />
1<br />
2<br />
2<br />
1. If disassembled, assemble crankshaft.<br />
A. Hand pack new bearings with #2 general purpose<br />
lithium base grease.<br />
Figure 11<br />
1. Hex bolt (30 mm long) 2. Hex bolt (55 mm long)<br />
B. Pressing on bearing inner race, install two connecting<br />
rod and two crankshaft ball bearings onto<br />
crankshaft.<br />
C. Slide connecting rods onto rod bearings. Offsets<br />
of the connecting rods should face each other. Install<br />
hex bolt, flat washers, and hex nut to connecting rod.<br />
Torque hex nuts to 25 ft–lb (34 N–m) to secure connecting<br />
rod to crankshaft.<br />
<strong>Multi</strong> <strong>Pro</strong> <strong>5700</strong>–D Page 6 – 13 Spray System