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Replacing the Rotor on your Yardbeast 2090 Wood Chipper Shredder

Updated: Jun 29, 2023

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.



a set of tools needed to repair your wood chipper

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.



Applying bolt loosening spray to the rotor bearing on the chipper shredder

Step 2.


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









inserting a hex key to the bearing shaft collar prior to removing the chipper rotor bearing

Step 3.


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











removing a safety hairpin from the size screens inside the best chipper shredder

Step 4.

Remove L-shaped pins and safety hairpins.












to remove the chipper mulch screen you need to pull back the screen after removing the pins

Step 5.

Remove the screen from the chipper.












place a piece of wood inside the chipper rotor to prevent the rotor from moving before attempting to remove the bearing unit

Step 6.

Insert a piece of wood or another suitable piece to block the rotor from rotating.











place a hex wrench on the chipper rotor center shaft bolt and loosen before removing the pulley

Step 7.


Remove the shaft center bolt with a 9/16" hex wrench or use a socket driver.











Use a socket ratchet wrench to remove the pulley hub bolts

Step 8.


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









Use a gear puller to slide the pulley away from the chipper rotor shaft

Step 9.


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.









Use a allen hex key to loosen the cup socket screw located on the bearing collar shaft

Step 10.


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.










a hex wrench is used to loosen the bearing fasteners of the home wood chipper

Step 11.


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.









loosen the other bearing unit prior to remove the wood chipper rotor assembly from the unit

Step 12.

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











gently tap on the bearing housing before attempting to slide the bearing away from the shaft

Step 13.

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









if the bearing is stuck, use a small flathead screwdriver to push the bearing outwards

Step 14.


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.







removing the bearing housing on a leaf shredder

Step 15.


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







extracting the bearing housing on a professional wood chipper shredder

Step 16.


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











removing the bearing housing pulley side of a leaves shredder and a branch chipper

Step 17.


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.








removing the top leaf chute of the chipper shredder before removal of the rotor

Step 18.

Loosen shredder chute bolts, and flanges, and remove.











lifting away the top cover of the wood chipper to allow inspection of the rotor with its shredding hammers and mulching flails

Step 19.

Remove the top.












taking away the side chipper frame that exposes the rotor shaft with its chipper blades, the mulching flails and the shredding impact hammers

Step 20.

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










lifting the chipper rotor away from the chipper shredder

Step 21.


Remove the rotor. At this point, we are halfway through replacing the wood chipper rotor.












cleaning of the inside parts of the wood chipper shredder before swapping the rotor

Step 22.

Clean the area and components before performing a reassembly.











REASSEMBLY


applying a little dab of grease to the inner collar shaft of the bearing before sliding it on the chipper rotor shaft

Step 23.


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









applying a dab of automotive grade oil to the rotor shaft to lubricate and make it easier to place the bearing

Step 24.

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











locating the rotor of the house wood chipper is a very straightforward process

Step 25.

Insert the rotor, and 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 in step 21.








putting back the side leaf chipper frame after positioning the  rotor inside the chipper frame

Step 26.


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










putting back the chipper rotor bearing housing

Step 27.

Apply a dab of oil to the shaft and insert the 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.






a good hole alignment is essential for making sure the wood chipper is running smoothly

Step 28.

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










place the top cover of the wood chipper to complete chipper box assembly

Step 29.

Once bolts are assembled onto each bearing unit, put them 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.








Once all parts of the wood chipper have been assembled, tighten the fasteners

Step 30.


Once the frame is assembled and the bolts are tightened. Proceed to tighten the 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 the rotor and make sure is rotating freely. Proceed to tighten socket cup screws.





This concludes the tutorial on replacing the wood chipper rotor on your Yardbeast 2090 shredder.

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