Toro 4100-D service manual Assembly Fig

Assembly (Fig. 80)

NOTE: When assembling the motor, check the identifi- cation marks made during disassembly to make sure the parts are properly aligned during assembly.

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 with clean hydraulic oil. 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 line for proper location.

11. Install the four (4) cap screws and hand tighten.

IMPORTANT: Prevent damage when clamping the deck motor into a vise; clamp on the front flange only. Also, use a vise with soft jaws.

12.Place motor front flange in a vise and alternately torque the 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.Make sure that tapered surface of motor shaft and spider hub are thoroughly clean.

15.Place woodruff key in motor shaft slot. Install spider hub and tab washer on shaft. Secure spider hub to shaft with nut. Torque nut from 27 to 33 ft--lb (37 to 45 N--m).

16.Secure nut to motor shaft by bending small tab of tab washer into keyway and large tab against nut.

17.Remove motor from vise.

Hydraulic System Page 4 -- 116 Groundsmaster 4100--D