Difficulty
Moderate
Steps
24
Time Required
30 minutes - 2 hours
Sections
5
- Safety Precautions
- 1 step
- Belt
- 9 steps
- Rubber Skirt Removal
- 1 step
- Sheave
- 3 steps
- Head Assembly
- 10 steps
Flags
0
BackEDCO Disk Grinder With Fixed Rear Wheel 50200-HD
Full Screen
Options
History
Save to Favorites
Download PDF
Edit
Translate
Get Shareable Link
Embed This Guide
Notify Me of Changes
Stop Notifications
Introduction
This repair requires two people.
What you need
Step 1
Safety precautions
- Before you begin, ensure the device is powered down and cool to the touch.
- Ensure the machine is unplugged.
- Turn the power switch counterclockwise into the OFF position.
Before you begin, ensure the device is powered down and cool to the touch.
Ensure the machine is unplugged.
Turn the power switch counterclockwise into the OFF position.
1024
Step 2
Remove the weighted hood
- Use a 9/16 inch socket to remove the two bolts securing the weighted hood.
- During reassembly, ensure the bolts are reinstalled with the washers and lock washers in the correct order.
Use a 9/16 inch socket to remove the two bolts securing the weighted hood.
During reassembly, ensure the bolts are reinstalled with the washers and lock washers in the correct order.
Step 3
- Remove the weighted hood.
- The weighted hood weighs 37 pounds. Wear gloves and handle with caution.
Remove the weighted hood.
The weighted hood weighs 37 pounds. Wear gloves and handle with caution.
Step 4
Remove the belt
- Use a 9/16 inch socket to loosen the bolts securing the motor mount.
- Do not completely remove the bolts.
Use a 9/16 inch socket to loosen the bolts securing the motor mount.
Do not completely remove the bolts.
Step 5
- Slide the motor towards the front of the machine as far as it will go to loosen the belt tension.
- Use a 9/16 inch socket to tighten the four bolts back down to lock the motor in a position where there’s the least belt tension.
- During reassembly, have one person slide the motor mount towards the rear of the machine to tension the belt while the other person tightens the bolts.
Slide the motor towards the front of the machine as far as it will go to loosen the belt tension.
Use a 9/16 inch socket to tighten the four bolts back down to lock the motor in a position where there’s the least belt tension.
During reassembly, have one person slide the motor mount towards the rear of the machine to tension the belt while the other person tightens the bolts.
Step 6
- Tilt the front of the machine up and rest the handlebars on the ground.
- Have someone hold down the handlebars to prevent tipping while working on the belt.
Tilt the front of the machine up and rest the handlebars on the ground.
Have someone hold down the handlebars to prevent tipping while working on the belt.
Step 7
- Pinch a flathead screwdriver between the belt and sheave.
- Rotate the sheave and pivot the belt up and away from its groove.
Pinch a flathead screwdriver between the belt and sheave.
Rotate the sheave and pivot the belt up and away from its groove.
Step 8
- Continue to rotate the sheave with once hand while holding the flathead screwdriver with the other to fully dislodge the belt from the groove.
Continue to rotate the sheave with once hand while holding the flathead screwdriver with the other to fully dislodge the belt from the groove.
Step 9
- Remove the belt from the motor pulley, then fully remove it from the machine.
- Reassembly tip: loop the belt around the motor pulley before placing it on the sheave.
Remove the belt from the motor pulley, then fully remove it from the machine.
Reassembly tip: loop the belt around the motor pulley before placing it on the sheave.
Step 10
Reassembly tip
- Reassembly tip: place the belt over the rim and rotate the sheave to guide the belt into the groove.
Reassembly tip: place the belt over the rim and rotate the sheave to guide the belt into the groove.
Step 11
Rubber Skirt Removal
- Remove the rubber skirt surrounding the disk head.
Remove the rubber skirt surrounding the disk head.
Step 12
Tilt the machine
- Tilt the machine back into working position.
Tilt the machine back into working position.
Step 13
Remove the sheave
- Use a 5/32 inch hex wrench to loosen the set screw securing the sheave to the head assembly shaft.
- If the set screw is seized, use an impact driver with a 5/32 inch hex socket to loosen it.
Use a 5/32 inch hex wrench to loosen the set screw securing the sheave to the head assembly shaft.
If the set screw is seized, use an impact driver with a 5/32 inch hex socket to loosen it.
Step 14
- Lift the sheave straight up off of the head assembly shaft.
Lift the sheave straight up off of the head assembly shaft.
Step 15
Remove the head assembly
- Remove the key from the head assembly shaft.
Remove the key from the head assembly shaft.
Step 16
- Use a 5/32 inch hex bit with an extension to loosen the two set screws securing the head assembly shaft to the upper bearing.
Use a 5/32 inch hex bit with an extension to loosen the two set screws securing the head assembly shaft to the upper bearing.
Step 17
- Use a 5/32 inch hex bit with an extension to loosen the two set screws securing the head assembly shaft to the lower bearing.
- The set screws can be accessed through the opening in the shroud on the front of the machine.
Use a 5/32 inch hex bit with an extension to loosen the two set screws securing the head assembly shaft to the lower bearing.
The set screws can be accessed through the opening in the shroud on the front of the machine.
Step 18
Tilt the machine
- Tilt the front of the machine up off the ground.
- Have someone hold down the handlebars to prevent tipping while working on the head assembly.
Tilt the front of the machine up off the ground.
Have someone hold down the handlebars to prevent tipping while working on the head assembly.
Step 19
Remove the disk
- Use a 7/32 inch hex key to remove the four flat screws securing the disk to the head assembly.
Use a 7/32 inch hex key to remove the four flat screws securing the disk to the head assembly.
Step 20
- Wear gloves. The edges of the disk can be sharp.
- Remove the disk.
Wear gloves. The edges of the disk can be sharp.
Remove the disk.
Step 21
Hammer the head assembly shaft
- Use a dead blow hammer to hit the head assembly shaft straight down until it is flush with the upper bearing bracket, or as far as it will go.
Use a dead blow hammer to hit the head assembly shaft straight down until it is flush with the upper bearing bracket, or as far as it will go.
Step 22
- Use an appropriately-sized punch to knock the head assembly the rest of the way out.
- Once the head assembly shaft clears the last bearing, it will fall out. If necessary, have someone hold it to prevent it from hitting the ground.
Use an appropriately-sized punch to knock the head assembly the rest of the way out.
Once the head assembly shaft clears the last bearing, it will fall out. If necessary, have someone hold it to prevent it from hitting the ground.
Step 23
- Remove the head assembly.
Remove the head assembly.
Step 24
Reassembly tip
- During reassembly:
- Insert the new head assembly up into the bearing as far as you can by hand.
- Use a dead blow hammer to knock the head assembly up into the machine until there is no play in the shaft spacer.
- Ensure there is no play in the shaft spacer before tightening the set screws onto the new head assembly.
During reassembly:
Insert the new head assembly up into the bearing as far as you can by hand.
Use a dead blow hammer to knock the head assembly up into the machine until there is no play in the shaft spacer.
Ensure there is no play in the shaft spacer before tightening the set screws onto the new head assembly.
To reassemble your device, follow these instructions in reverse order.
Cancel: I did not complete this guide.
4 other people completed this guide.
Author
Sam Omiotek
Member since: 02/25/2019
55,294 Reputation
288 Guides authored
Badges:
35
+32 more badges
Team
Guide Team
Member of Guide Team
Community
10 Members
9,216 Guides authored
DUSTIN - Aug 20, 2022
Reply
i have a leveler nob that feels seized. any advise would help
