Rainbow Vacuum Model D3A Motor Design Parts

Original factory OEM replacement motor for the models D3C, D3A, D2A, D2 and D Rainbow.

If you upgrade to this motor, you should also purchase the revised R4100 separator, H555 separator nut, and a new R912 gasket. All items are listed under the "Related Items" tab.

*3 year limited warranty (Year 2 and 3 are prorated)

Stage assembly clip for the R2104 that came original in the model D3C Rainbow. The R2104 is the replacement motor for the D3A, D2A, D2, and D models.

Middle stage fan assembly for the bypass motor design that came standard on the D3C, D3A, and late version D2A model Rainbow.

Air guide for the model D3C, D3A, and late version D2A model Rainbow. First stationary fan that fits on the bearing plate.

Bearing plate for the D2A and D3A motor design. You must understand the different versions of spacers and stage assembly when working with this motor. Call our technical support team if you have any questions.

The "Reconditioned" option is a used bearing plate with a NEW bearing.

Very rare high quality upper bearing for the model D3A, D2A, D2, and D Rainbow / Rexair cleaning system.

The bearing plate is no longer available from Rexair but the bearing still is. You can pop rivet a new bearing into your existing plate. We give free technical support for all parts purchased from us.

Manufactured in Japan.

Grommet for the D3C, D3A, D2A, D2, and D model Rainbow vacuum. Helps prevent the wires from rubbing on the motor housing.

Wire terminals for the leads that connect the field to the switch on all D3, D2, and model D motors.

This wire clamp is used on the D3C, D3A, and D2A bypass motor design. It clips onto the field wire inside the motor housing and is pushed down beside field and housing to keep wire in place.

Field assembly for the R1405 and R1767 motor design. First bolt design armature (R1426) for the bypass motor design that works with this field. The carbon brush terminals on this field are the spade design that works with the R1552 carbon brushes.

Effective through serial number 4545550 in the D3A model Rainbow.

Field assembly for the R1767 motor design. The original bolt design armature was an R1909 but the R1974 can also be used with this field. The carbon brush terminals on this field are the spade design that works with the R1552 carbon brushes.

Effective from serial number 4545551 through 4607199.

Insulation that is located around the field inside the motor housing for the D3C, D3A, and D2A model Rainbow.

This is the first version armature design for the model D3A and entire duration of the D2A Rainbow bypass motor. Works with the R1435 field.

Effective through serial number 4545550 in the D3A model Rainbow.

This is the next version armature that came original with the R1405 motor design for the model D3A Rainbow bypass motor. It replaced the R1426 armature and works with the R1910 and R2424 field.

You may find this armature in a D2A, D2, or D model Rainbow because this motor design was a factory replacement for all previous motor versions.

Effective in the D3A from serial number 4545551 through 4607199.

Very rare high quality lower bearing for the model D3A, D2A, D2, D, C, B, and A Rainbow / Rexair cleaning system.

Most service places have all but abandoned these models for repair. We give free technical support for all parts purchased from us.

Manufactured in Japan.

Slinger ring for the original D3A, D2A, D2, and D motor design. Each Rainbow uses two of these per application. Be sure you have an original motor and not an upgraded R2104 motor.

Bearing shield for the D3A, D2A, D2, and D bolt style motor design. Be sure you have an original motor and not an upgraded R2104 motor.

This motor shaft nut is the same for all model D3C, D3A, D2A, D2, and D motor design. Reverse thread nut so be careful when installing and removing to be sure not to damage.

Over tightening can cause the snap rings to be pressed out of their slots and cause a spacing issue which will cause the motor to bind.

Upper spacer for the bolt armature design by-pass motor. This spacer is different from the R1984 spacer in size. Please check the "Specification" tab for more details.

Be sure you understand the difference between all the spacers and stage assembly in this configuration. Call our technical support team if you have any questions.

Upper stage fan assembly for the bypass motor design on the D3C, D3A, and D2A model Rainbow.

Middle spacer that came standards in the D3A motor non-bypass design. If this part does not slide off freely, then the care of this machine should be reviewed in the owner's manual.

Rotating fan for both the original non-bypass and bypass motor design that came standard in the D3A, D2A, D2, and model D Rainbow. This fan is used on the bolt style armature.

Short wedge shaped spacer that sits on top of the bearing plate for the bypass motor design that came standard in the model D3A.

This is the pan head screw for the bearing plate on D3C, D3A, D2A, D2, and D model Rainbows. If these screws are even the least bit rusty, then you might want to revisit your owner's manual and refresh yourself on proper storage and use.

Cork gasket that fits under the bearing plate and seals bearing plate to the motor housing.

Fits models D3C, D3A, D2A, D2, and D Rainbow.

Motor cooling fan for the D3A and D2A model Rainbow. This fan pushes down into a grove that is around the shaft of the armature close to the commutator.

Original field screw for the model D3C, D3A, and D2A version Rainbow. Course thread for contact with the R1449 Insulator-Field Screw Insert.

D3A, D2A, D2, and model D motor fields have spade connections for the R662 brush holders. This kit allows you to convert over the terminals to allow the use of the R2421 and R2420 brush holder kit.

Cork gasket for the D3C, D3A, D2A, D2, and D motor housing for use with the carbon brush holders. Helps reduce air leaks to keep maximum performance.

Original brush holder design for the early version D3A, D2A, D2, and model D Rainbow. Works with the R1552 carbon brushes.

This is the replacement screw that holds the carbon brush holder into the motor housing. A total of four are used in the bypass and non-bypass motor design that are used in the model D3C, D3A, D2A, D2, and D Rainbow.

Your motor will not start without the carbon brush. Replace a damaged or worn out carbon brush with this exact factory OEM part.

This item is sold each. If you need a pair to replace both sides on your motor, then please add a quantity of (2) to your cart.

Original OEM factory carbon brush for the model D3A, D2A, D2, and D Rainbow. This brush is installed through the back of the holder and held in place by a plastic cap that screws into the holder.

* SELECT OPTION: This item needs to be "seated" for proper life expectancy. We use a variable transformer (variac) to seat the brushes. If you are unable, we offer this as an optional service.

If you do not seat the motor brushes, you can expect about a one year life before they wear out.

Upgrade your carbon brush kit to the current design.

Be sure to add an R2423 and (2) R1455 gaskets to complete the conversion.

D3A, D2A, D2, and model D motor fields have spade connections for the R662 brush holders.

Brush holder cap for the R662 carbon brush holder. Holds the R1552 carbon brush inside the brush holder. Easier to install with carbon brush holder out of the motor housing. Otherwise, spring pressure in created when the carbon brush is installed and pushed against the armature.

Main bypass motor housing for the D3C, D3A, and late version D2A model Rainbow.

Field screw insert for the model D3C, D3A, and D2A model Rainbow vacuum.

The air deflector is a common item to replace. This item is pressed into place so removal will damage and require a new install.

Fits D3C, D3A, and D2A model Rainbows. Use the R747 flange to hammer this into the motor housing.

This screw is used to hold slinger ring and bearing shield into motor housing. It is used on the bypass and non-bypass design that came original in the model D3C, D3A, D2A, D2, and D Rainbow. In many cases this part is rusted.

Original metal spider for the bypass motor design that came original on the D3A and D2A model Rainbow. Works with both the plastic and metal R312 separator.

The D3A and D2A original motor uses the R3450 screw style separator bolt. It DOES NOT use the H524 nut design.

This large nut is used on the bolt style motor to hold spider in place. The bolt style motor came standard with the models D3A, D2A, D2, D, C, B, and A.

If your nut is rusty, then it is best to replace for ease of service in the future.

This item fits model D4C, D3C, D3A, D2A, D2, and D. On the model D4C and D3C, you must have the original R1976 spider that came standard for this to fit correctly.

On March 28th 2002, Rexair discontinued production on this item and also the matching R1976 spider. We realize that many people still have the model D4C and D3C Rainbow system, so we offer used as a solution.

If you need to replace both separator and spider, then you would order item numbers R4100, R4101, and H555. These three items are a direct replacement and also an improvement.

The separator separates the air from the water. The water is thrown back into the water pan and it allows clean air to go up through the motor and out the exhaust. Be sure to take off and clean periodically as it can become clogged with dirt and will reduce your performance.

If you have a plastic separator that does not have a metal band around the outside edge, at some point the separator may break into pieces during use. The metal band was added to prevent this issue from occurring.

The separator is one of the most important parts on the Rainbow cleaning system. It throws the water back into the water pan and allows clean water washed air to travel up through the motor and out the exhaust. Be sure to take off and clean as it can become clogged with dirt and debris.

If your model is the D4 SE (Special Edition) with the R4101 spider, then this is the current revision. If you have a D4 or D3C, then you would also need to order the R4101 and H555.

All parts can be viewed by clicking on the "Related Items" tab above.

Original factory screw (bolt) for the model D3A and D2 Rainbow. Designed to match the plastic separator that has a beveled edge around the center hole. This bolt under the head is chamfered to sit in this beveled pocket.

Works with the female type armatures found on the above original motors. If your motor has male threads on the end of the armature, then this is NOT the correct part. You need to order an H524 or an H555 separator nut.

NOTE: This item is discontinued but this separator nut can be used as a replacement.

This standard separator nut for the R4100 separator comes factory standard on the model D4C SE (Special Edition) Rainbow. Do not use on the R312 separator that comes standard on the original D4C or older units.

Lower stage fan on the R2104 bypass motor design that includes a threaded hole for a ground screw.

This ground screw is used on the D3C, D3A, D2A, D2, and D model Rainbow.

On the bypass motor, this screw is used to ground the green wire from the power cord to the R1752 lower stage assembly.

On the non-bypass motor design, this screw is used to ground the green wire from the power cord to the motor housing and main housing on the metal D2, and D Rainbow.

Retainer for the cover plate on the side of the motor housing. Fits the D3C, D3A and late version D2A bypass motor design.

Cover plate for the by-pass motor design that came factory in the late version D2A and all motor versions in the D3C and D3A.

Cover plate gasket for the R2104 version motor that was in the D3C, D3A, and late D2A model Rainbow.

Rubber upper shell gasket for the bypass motor design. Fits under the bearing plate than came standard on the D3C, D3A, and late version D2A model Rainbow.

Plastic shell that installs over the motor housing on the by-pass motor design. Airflow goes between this item and the motor housing and is what directs the air outside the motor housing and is why this design is called a by-pass motor.

Rubber lower shell gasket for on the bypass motor design. Helps prevent air leaks to give the motor maximum performance.