Toro 3100 manual Reassembly, Repairs 4 41.5 Rev. D Greensmaster

3.Inspect drive gear, idler gear and bearing blocks (Fig. 18f) for the following:

A.Gear shafts should be free of rough surfaces and excessive wear at bushing points and sealing areas. Scoring, rough surfaces, or wear on gear shafts indi- cates need for replacement.

B.Gear teeth should be free of excessive scoring and wear. Any broken or nicked gear teeth must be replaced.

C.Inspect gear face edge for sharpness. Sharp edges of gears will mill into bearing blocks and, thus, must be replaced.

D.Bearing areas of bearing blocks should not have excessive wear or scoring.

E.Face of bearing blocks that are in contact with gears should be free of wear, roughness or scoring.

4.Inspect front flange and rear cover for damage or wear.

Reassembly

NOTE: When reassembling the motor, check the identi- fication marks made during disassembly to make sure the parts are properly aligned during reassembly.

1.Lubricate o–rings, pressure seals, back–up gaskets, and seal grooves with a thin coat of petroleum jelly. Lu- bricate all other internal parts freely with clean hydraulic oil.

2.Install new shaft seal into front flange.

3.Install lubricated pressure seals into the grooves in the front flange and rear cover. Follow by carefully plac- ing the back–up rings into the grooves.

4.Install new o–rings to the body.

5.Lubricate gear faces and bearing surfaces of drive gear, idler gear, and bearing blocks. Carefully assemble bearing blocks and gears noting identification marks made during disassembly.

6.Position the motor body on its side. Carefully slide bearing block and gear assembly into the body cavity using identification marks made during disassembly.

7.Remove any excess lubrication from mating sur- faces of body, rear cover, and front flange. Make sure that these surfaces are clean and dry.

8.Install dowel pins in body.

IMPORTANT: Do not dislodge o–rings, pressure seals, or back–up rings during final assembly.

9.Gently slide the rear cover onto the assembly using marker or scribe mark for proper location. Firm hand pressure should be sufficient to engage the dowel pins.

10.Position the motor with rear cover downwards. Care- fully slide the front flange onto the assembly using mark- er or scribe mark for proper location.

11. Install the four cap screws and hand tighten.

IMPORTANT: Avoid using excessive clamping pressure on the motor housing to prevent distorting the housing.

12.Place motor front flange in a vise and alternately torque the cap screws from 33 to 40 ft–lb (45 to 55 N–m).

13.Put a small amount of hydraulic oil in port on motor and rotate driveshaft one revolution. Protect the shaft if using a pliers. If drive shaft binds, disassemble motor and repeat assembly process.

14.Remove motor from vise.

Repairs Page 4 – 41.5 Rev. D Greensmaster 3100