Rotor replacement on your chipper shredder

Overview

 

On this tutorial, we will cover how to make a complete rotor swap on your chipper shredder. The model utilized here is the chipper shredder 2090, but the concept is pretty much the same on all of our chipper shredders. This tutorial will serve you well if you need to remove the rotor to perform maintenance or a rotor swap.

Step 1.

 

Tools

 

For this tutorial, we will use:

 1- Pliers

1- Can of penetrating oil spray

1- Hex key 1/8" (Allen key)

2- Hex wrenches 9/16"

2- Flat screwdrivers (chisel optional)

1- Small hammer or mallet

1- Pulley extractor

1- Oil dispenser, grease

Strips of 280-grit sanding paper (or higher)

Before starting this tutorial, remove the belt guard and belts beforehand (Make sure the engine is OFF).  On how to remove/reassemble the belts, please refer to the following tutorial here.

Step 2.

 

Spray the bearing unit with penetrating oil. Make sure to aim directly to shaft and bearing housing contact (use the straw). Let it sit for approx 20 mins. 

Step 3.

 

Loosen the 2-housing socket screws with a 1/8" hex key (Allen).

Step 5.

 

Remove pins and safety hair pins. 

Step 6. 

 

Remove the screen.

.

Step 7. 

 

insert a piece of wood or suitable piece to block the rotor from spinning.

.

Step 8. 

 

Remove the shaft center bolt with a 9/16" hex wrench of socket. 

Step 9. 

 

Remove the 1/4" hub bolts with a 7/16" socket and place them on the other holes, tighten to push the pulley away towards the bearing, and free the hub. The pulley must be sitting completely away from the hub. 

.

Step 10. 

 

If the pulley is free but the hub is too tight to slide it out by hand, place a pulley extractor and bring the pulley out along with the hub as shown in the picture. 

.

Step 11. 

 

Once the pulley has been removed, loosen the bearing housing set screws. Apply penetrating oil to the shaft bearing contact area and let it sit for 20 mins. 

.

Step 12. 

 

Loosen the bearing housing bolts with 2- 9/16" hex wrenches. Make sure to utilize a wrench from the inside to stop the bolt's head from spinning. 

Step 13. 

 

Loosen bolts from the chute side with only one 9/16" hex wrench. 

.

Step 14. 

 

Gently tap on the bearing housing with a small hammer to shake off the contact area and improve the penetrating oil's reach. This will help in removing the bearing.

.

Step 15. 

 

Use a flat screwdriver to lift one end of the bearing housing. This will require adding significant stress to the tool. Apply a good amount of lever-action towards the end of the shaft and see if the bearing is moving out.   

.

Step 16. 

 

If it's too stuck, utilize an additional tool such as a chisel to help extract the bearing housing as shown on the pic. We use some scrap plywood to protect the paint and keep some lever action on the housing.

.

Step 17. 

 

Once there is sufficient room, utilize a pulley extractor to bring the bearing out. 

Step 18. 

 

Repeat the same steps 14-17 on the bearing from the transmission side. Before sliding it out make sure to sand the shaft to remove rust with a 280 grit sandpaper and after sanding, apply a thin film of grease.

.

Step 19. 

 

Loosen shredder chute bolts, flanges and remove. 

.

Step 20. 

 

Remove the top.

Step 21. 

 

Remove all bolts attaching the side frame and remove. Make sure that the rotor is being supported underneath.

Step 21. 

 

Remove the rotor.

Step 22. 

 

Clean the area and components before performing a reassembly.

REASSEMBLY

Step 23. 

 

Clean inside the machine and components. Sand with a 280-grit paper inside the bearing to remove rust, debris, and any grease sludge. Then, apply a thin film of oil.

Step 24. 

 

Apply a thin film of oil to both shafts on each side.

Step 25. 

 

Insert the rotor, make sure the non-wrapping disk (flat 1/2" steel donut) is already in place. Make sure to put a piece that supports the rotor underneath as described on step 21.

Step 26. 

 

Insert back side frame. Please note you must insert bearing bolts BEFORE sliding the shaft. 

Step 27. 

 

Apply a dib of oil to shaft and insert bearing housing. Align holes with the non-wrapping disk and insert bolts. Please note you must make sure that the bearing grease nipple is pointing outwards of the frame, otherwise, you would not be able to utilize it for regreasing in the future.

Step 28. 

 

Align holes with the help of a screwdriver or a round shaft and insert bolts. Repeat step 27-28 on the other side. 

Step 29. 

 

Once bolts are assembled onto each bearing unit, put back together with the frame (top cover, chute flange, etc) else BEFORE tightening bearing bolts. Bearing bolts shall be the last fasteners to be tightened. 

Step 30. 

 

Once the frame is assembled and bolts are tightened. Proceed to tighten bearing bolts. Preload each bearing bolt to make sure the rotor sits well and allow the bearing unit to self-align, before giving the final tightening.   

After each bearing housing is tightened, spin rotor and make sure is rotating freely. Proceed to tighten socket cup screws. 

END OF TUTORIAL

  • Facebook
  • Twitter
  • YouTube
  • Instagram

CALL US NOW: (305) 396-3396

Wood

Chippers

- 2510

- 3514

- 3514ATV

Chipper

Shredders

- 2050

- 2090

Commercial Wood

Chippers

- 4521

- 4500

Spare Parts

- 2510

- 2090

- 2050

- 3514

All of our wood chippers are made from quality components and materials. Designed with the user in mind; our wood chippers can withstand the hardest of jobs out in the field. 
From residential to more robust applications, we have a solution for you; whether it is chipping palm fronds in Miami or shredding pine cones in Seattle. Our wood chippers are backed by our 2-year warranty and up to a 3-year engine warranty on the engines we carry. 
All of our chipper orders are shipped free to residential addresses with liftgate service included. We are an established business since 2006 based on Miami, Florida (FL). 
We sell high-quality wood chipper equipment for residential, semi-pro and commercial applications. 
We breathe innovation and design; our chippers are evolving constantly with one goal in mind: 100% customer satisfaction.

    ©2020 .                                    All rights reserved.Rederick Metal Industries Corp. | Miami, FL 33142 

0

MY CART