Toro 38080, 38065 manual 2768-033

Traction Drive Systems

4.If the pivot assembly was repaired, now is the time to assemble it.

A.Secure the friction wheel to the hub with four cap screws and locknuts. If the locknuts are worn, apply a drop of Loctite™ Red #271 or equivalent to the threads.

B.Slip a slider ring on either side of the eyebolt and slide it on the hub. Install the spacer and snap ring. Note the snap ring must be installed with the sharp edge facing outward (away from the friction plate) (Figure 83).

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	Figure 83	2773-049
1. Eyebolt	2.	Hex shaft

C.If the hex shaft is rusty, now is the time to clean it with a wire brush or emery cloth. Apply a very light coat of engine oil to the shaft. A thin coat will prevent rust, but too much will be flung around the drive system during operation. A very thin coat of Lubriplate™ MAG-1 could be use here as an alternative to oil. Ordinary grease will thicken in cold weather and cause a hard shifting problem.

D.To assemble the pivot shaft assembly, hold the shaft with the flat bar that the linkage attaches to pointing towards you.

E.The hub and friction wheel goes inside the frame with the hub to your left. Insert the hex shaft into the hub with the keyway on the left. Slide the bearings on the hex shaft (Figure 83). Note the hub on both bearings should face to the left. Secure both bearings with self-tapping screws. The friction wheel should spin without binding.

F.Hook the long end of the spring in the hole in the left front corner of the frame (Figure 84).

Figure 84 2773-051

G.Slide the spacer on the right hand side. Clean the bushings and install them in the sprocket with a light coat of oil. Lightly oil the inside of the bushing and slide the sprocket on with the gear to the outside.

H.Now insert the key into the keyway and slide the small sprocket on. Align the sprockets and tighten the setscrew in the small sprocket. Install the chain. Lubricate the chain with chain oil. If you use engine oil, use a very light coat, as it will be thrown around the drive system (Figure 84).

5.The pivot assembly is installed by first feeding the flat arm through the slot in the center frame. Align the pivot assembly with the holes in the side plates. Note that there are special shoulder bolts. The shoulder must pass through the side plate and bottom on the end of the shaft (Figure 85). After securing the bolts, check to be sure the pivot assembly can rotate. If not, check the pivot bolts to see if the side plate was pinched between the bolt and pivot shaft.

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Figure 85	2768-033

1. Shoulder bolt

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