Aligning The Pump Drive Pulley; Adjusting The Pto Brake Spring; Adjusting The Hopper Door - Toro 74310 Operator's Manual

Note: Use a straight edge to align all three surfaces.
1. Align the three pump drive
pulley surfaces shown with
this pattern within 0.8 to
1.6 mm (1/32 inch to 1/16
inch).
9. Tighten the four engine mounting bolts and four
jackshaft mounting bolts. Check the alignment after
tightening.
10. Install the pump belt tension spring.
11. Swing the fuel tank in and install tank mounting nuts.
12. Align the pump drive pulley; Aligning the Pump Drive
Pulley (page 46).

Aligning the Pump Drive Pulley

The pump drive pulley alignment is necessary for any of the
following conditions:
•
The engine mounting bolts have been loosened or the
engine has been moved or replaced.
•
The pump pulleys have been loosened, moved, or
replaced.
•
The PTO pulley alignment has been performed; refer to
Aligning the PTO Drive Pulley (page 45).
1. Stop the machine and move the speed-control lever to
the neutral position.
2. Disengage the PTO, engage the parking brake, stop the
engine, and wait for all moving parts to stop.
3. Loosen the set screws on both pump pulleys.
4. Using a straight edge, align each pump pulley with the
engine pulley by sliding it along the pump shaft (Figure
58).
5. Tighten the pulley set screws and check the alignment.
Figure 58
2. Align the three PTO drive
pulley surfaces shown with
this pattern within 0.8 to
1.6 mm (1/32 inch to 1/16
inch).
Adjusting the PTO Brake
Spring
The PTO brake spring adjustment is only necessary if the
blower has been removed or replaced or if the PTO drive
idler arm has been disassembled.
1. Stop the machine and move the speed-control lever to
the neutral position.
2. Disengage the PTO, engage the parking brake, stop the
engine, and wait for all moving parts to stop.
3. Locate the brake spring and thread the two jam nuts
out to the end of the brake spring rod (Figure 59).
4. Tighten the jam nuts together at end of the brake-spring
rod.
1. Tighten the jam nuts here
2. PTO Brake spring assembly

Adjusting the Hopper Door

1. Stop the machine and move the speed-control lever to
the neutral position.
2. Disengage the PTO, engage the parking brake, stop the
engine, and wait for all moving parts to stop.
3. Loosen the six door hinge nuts (Figure 60).
4. Open the door and place a 3/8 inch rubber strip or
3/8 inch diameter hose between the hopper and the
hopper door (Figure 60).
5. Close the door and push it tight against the hopper.
6. Tighten the hinge hardware. Open the hopper door
and remove the rubber strip.
46
Figure 59