Toro 20330 Service Manual - Page 35

SINGLE SPEED SPUR/BEVEL GEAR TRANSMISSION Description This basic transmission has been in use for several years. There are minor variations, such as different shafts on the bevel pinion gear to accommodate belt alignment on different chassies. All use a bevel pinion input gear which mates with a combination bevel/spur gear, which drives a final spur gear. 2. Remove transmission belt cover. 3. Remove both rear wheels. 4. Remove retaining ring, spring, thrust washer, and pinion from both axles (Fig. 028). Refer to "Wheel Pinion Clutch" on page 5-3 for additional information about the clutch mechanism. Lubrication Proper lubrication for this transmission is 2.5 - 3 fluid ounces (7.1cc - 9.0cc) of lithium based No. 2 grease. Transmission Removal and Replacement 1. Raise the rear of the mower and support with a block (Fig. 027). Fig 028 PICT-1873a 5. Continue disassembly, remove rocking key, clutch washer, klip ring, keyed thrust washer, pivot arm thrust washer, and friction ring. The pivot arm and spring arm will then slide off the axle (Fig. 029). A. Wood block A Fig 027 PICT-1870 WPM Drive Systems Manual Fig 029 PICT-1874a 2-3