Replacing The Pump Drive Belt; Adjusting The Parking Brake - Toro 74236 Operator's Manual

1
Figure 61
1. Push arm
2. 15-5/16 in. (389 mm)
nominal
11. Rotate the belt guide on the rear of the mower so that it
is 1/8–1/4 in. (3–7 mm) away from the vertical side of
the PTO belt (Fig. 62).
1
3
Figure 62
1. Belt guide
2. PTO drive belt

Replacing the Pump Drive Belt

Check pump drive belt for wear after every 50 hours of
operation.
1. Pull the spring loaded idler down and remove the
traction belt from the engine and hydro pump pulleys
(Fig. 63). Remove the belt between the pulleys.
2. Install the new belt around the engine and hydro pump
pulleys (Fig. 63).
3. Pull the spring loaded idler down and align it below the
traction belt. Release the pressure on the spring loaded
idler (Fig. 63).
1
3
2
m–3740
3. Jam nut
4. Ball joint
2
M–4374
3. 1/8–1/4 in. (3–7 mm)
44
Figure 63

Adjusting the Parking Brake

Check the parking brake for proper adjustment.
1. Disengage the brake lever (lever down).
2. Measure the length of the spring. The measurement
should be 2-/34 in. (70 mm) between the washers
(Fig. 64).
3. If an adjustment is necessary, loosen the jam nut below
the spring and tighten the nut directly below the yoke
(Fig. 64). Turn the nut until the correct measurement is
obtained. Tighten the two nuts together and repeat on
the opposite side of the unit.
4. Turn the nuts clockwise to shorten the spring length and
counterclockwise to lengthen the spring.
5. Engage the parking brake, lever up.
6. Measure the distance between the trunnion roller and
the collar on the brake rod. The measurement should be
3/16–1/4 in. (5–7 mm) (Fig. 64).
7. If an adjustment is necessary, loosen the jam nut
directly below the yoke. Turn the bottom rod until the
correct measurement is obtained (Fig. 64). Tighten the
jam nut at the yoke.
4
1
3
Figure 64
1. Brake lever
2. Spring, 2-3/4 in. (70 mm)
3. Adjusting nuts
5
6
2
m–3788
4. Collar on brake rod
5. 3/16–1/4 in. (5–7 mm)
6. Jam nut and yoke