Vogt P118F/HE100, Service Manual

Page: 99 / 126

05TA Service Manual
SERVICE OPERATIONS
7/24/13
9-21
Cutter Motor.
The cutter motor’s bearings are prelubricated and sealed and require no further
lubrication. If the motor needs replacing, proceed as follows:
1. Turn power off and lock out disconnect.
2. Check terminals with volt meter to confirm power is off.
3. Remove motor terminal cover and disconnect wires. Mark wires for ease of replacement.
4. Remove four cap screws around the motor flange and separate the motor from the reducer.
Watch for shaft key which must be reinstalled later.
5. Check the motor electrically to confirm it is defective.
6. Apply Never Seize lubricant to the shaft of the replacement motor.
7. Position the shaft key in the motor key-way, align it with the reducer key-way and install the
motor. Make sure the key stays in.
8. Install the four cap screws to hold the motor in place on the reducer.
9. Connect the wires and install the terminal cover.
10. Check motor rotation to make sure the cutter turns in the proper direction. Reverse two wires at
the motor if necessary to change rotation direction.
Cutter Gear Reducer.
To remove the gear reducer, proceed as follows: (See FIGURE 9-17)
1. Turn power off and lock-out disconnect.
2. Remove motor from reducer.
3. Loosen (slightly) the four bolts and nuts holding the gear reducer in place.
4. Remove the four bolts holding the mounting plate to the water tank gear enclosure and remove
the reducer and mounting plate from the tank.
5. Measure the distance between the top of drive gear and the mounting plate for future reference.
6. Remove the three cap screws from the gear and hub and install two 1/4”-20 x 2” long all thread
set or cap screws in the threaded holes of the drive gear. These two screws can be used as
jacking bolts to remove the gear from the tapered split hub.
7. In necessary, the split hub can be removed by driving a screw driver in the split and sliding the
hub off the shaft.
8. The new gear reducer can then be installed by reversing the removal procedure.
9. Be sure the gear and hub is properly positioned on the shaft so it will have a full vertical mesh
with the cutter ring gear.
10. Final gear meshing should be adjusted so there is only a slight amount of play between the ring
gear and drive.
11. Make sure all bolts are tightened securely and there is no excessive gear noise when the cutter
motor is running.