BU500 Parts List
Overview
This document provides a comprehensive parts list and technical information for the Nilfisk BU500 floor machine.
Form No. 56042570
Models: 56380063, 56380064 (UK)
Table of Contents
When Ordering Parts
Use the part numbers from the “Ref. No.” columns in this parts list. If the “Ref. No.” column is blank; look under the “Kit” column to identify which kit contains the part in question, then use the kit callout, for example "K1", to find the “Ref. No.” for that kit.
Kit Contents Example
| Kit | Item | Ref. No. | Qty | Description |
|---|---|---|---|---|
| K1 | 1 | 16 | 1 | Washer Flat 3/16 Zinc Plat |
| K1 | 2 | 2 | 2 | Screw-BHS-Brass-10-32x3/8-MS |
| K1 | 3 | 3 | 1 | Washer EPDM 7/32 X 1/8 |
| 4 | 805 | 1 | Chain-Cover | |
| 5 | 905 | 2 | Caster Swivel 4 Gray Non MA | |
| K1 | 6 | 2 | 2 | Nut, Hex Nyl Loc 10-24 |
| K1 | 7 | 3 | 1 | Scr- Hex SS 1/4-20 X .75 |
| K1 | 8 | 16 | 16 | Scr, Hex Hd Loc 1/4-20 x .50 |
| K1 | 9 | 3 | 3 | Wsh, Flt SS .260 X 1.000 X .074 |
| 10 | 56113012 | 1 | Solution Tank | |
| 11 | 56113034 | 2 | Hinge Plate | |
| K1 | 56113103 | 1 | Kit-Hardware Solution Tank |
Specify the model and serial number of the machine.
Model: _____________________________ Serial No.: ________________________________
Base System-BU500
Diagram showing the components of the BU500 base system. Key components include the motor, wheels, pad driver assembly, and housing.
Parts List
| Kit | Item | Ref. No. | Qty | Description | Service Kits |
|---|---|---|---|---|---|
| K2 | 2 | VF45121B | 1 | Bottom Cover | K1 56381549 1 Nilfisk BU500 Upper Cover Kit |
| 3 | VF50712 | 1 | Interconnect Cable | K2 56381551 1 Nilfisk BU500 Lower Cover Kit | |
| 4 | VF52213 | 1 | Cable Clamp | K3 56381554 1 Burnisher Balance Spring Kit | |
| 5 | VF52214 | 1 | Bracket Asm | K4 56381556 1 Main Axle Kit | |
| 6 | 56925A | 1 | Transport Axle Asm | K5 11282A 2 Wheel Kit-160mm | |
| 7 | 57369A | 1 | Pad Driver | K6 56381544 1 Nilfisk BU500 Decal Kit | |
| 7A | 1 | Retainer, Bottom Half (part of 56925A) | |||
| 8 | VF52220 | 1 | Bearing Unit | ||
| K3 | 9 | 1 | Spring, CW | ||
| 10 | YLQ36000 | 1 | Motor 1.1 KW 1500 RPM | ||
| K3 | 11 | 2 | Scr M8 x 20 Hex | ||
| 12 | N/A | 1 | See Handle System | ||
| 13 | 20038A | 1 | Mainframe Gray Burnisher | ||
| 14 | 30886A | 1 | Bumper | ||
| K1 | 15 | 1 | Cover Upper | ||
| 16 | VF52017N | 2 | Wheels Transport 127MM | ||
| K6 | 17 | 2 | Label Handle Nilfisk | ||
| K6 | 18 | 2 | Label Nilfisk BU500 | ||
| K5 | 19 | 2 | Washer Bowed 20 mm | ||
| K5 | 20 | 4 | Washer Flat 20 mm | ||
| 21 | VV20509 | 1 | Scr ST 5.0X10 mm | ||
| K2 | 22 | 7 | Screw M5 X 20-St Ph | ||
| 23 | GT13018 | 2 | Bolt | ||
| 24 | VA13474 | 4 | Screw | ||
| K1 | 25 | 4 | Screw | ||
| K5 | 26 | VA96851 | 2 | Wheel Retainer | |
| 27 | VF14006 | 4 | Bolt | ||
| 28 | VF13517 | 4 | Washer Flat | ||
| 29 | VF13519 | 1 | Washer Lock | ||
| 30 | VF13666 | 2 | Washer Flat | ||
| 31 | VF72124 | 1 | Capacitor Holder | ||
| 32 | VF44012 | 2 | Screw | ||
| K4 | 33 | 2 | Wheel Clamp Large | ||
| 34 | VF52008 | 1 | Spacer | ||
| K4 | 35 | 1 | Axle Main | ||
| 36 | VF52021 | 2 | Washer Fender | ||
| 37 | VF52106 | 2 | Riser Front | ||
| 38 | ZD40205 | 1 | Key Motor | ||
| 39 | VF13474A | 2 | Washer | ||
| K5 | 40 | 2 | Wheel 160mm Dia. Gray | ||
| 41 | VF52004A | 1 | Pulley | ||
| 42 | VF52009D | 1 | Pulley Motor | ||
| K4 | 43 | 4 | Scr M5x20 Self Tapping Cross Recess Pan | ||
| 44 | VF14079 | 1 | Belt | ||
| K3 | 45 | 1 | Shaft | ||
| K3 | 46 | 1 | Spring, CCW | ||
| K3 | 47 | 2 | Washer 8mm | ||
| K5 | 48 | 2 | Ring-Retaining External 19mm (.750) | ||
| 49 | VF13518 | 4 | Washer Lock | ||
| 50 | VF999849 | 1 | Capacitor Start 100 MFD/300vac | ||
| 51 | VF32109 | 1 | Capacitor Run 20 MFD/500vac | ||
| 52 | VF74102 | 1 | Capacitor Holder | ||
| 53 | VF13490 | 2 | Scr. M4-.7 x 12MM FIt Phillips | ||
| 54 | GT13014 | 2 | Nut M4 | ||
| [] | 56044601 | 1 | Literature Pack |
Handle System-BU500
Diagram showing the components of the BU500 handle system. Key components include the handle, switch assembly, cord, and various levers and springs.
Parts List
| Kit | Item | Ref. No. | Qty | Description | Service Kits |
|---|---|---|---|---|---|
| K1 | 1 | 11269A | 1 | Circuit Breaker Assembly | Cord Wrap Kit |
| K3 | 2 | VF99012 | 1 | Washer Sh#1210-00 | Handle Cover Kit Nilfisk |
| K4 | 3 | 40263A | 2 | Lever Switch | Handle Support Kit |
| K4 | 4 | 40268A | 1 | Lever Handle Adjustment | Handle Switch Lever Asm |
| K5 | 5 | 40249A | 1 | Cap Rubber | Gear Housing Cover Kit |
| K5 | 6 | 1 | Cover Front | Burnisher Gear Set Kit | |
| K5 | 7 | 1 | Cover Rear | Gear Housing and Tube Kit | |
| K2 | 8 | 1 | Cover Handle Front | Release Spring and Rod Kit | |
| K2 | 9 | 1 | Cover Handle Rear | ||
| K1 | 10 | 1 | Hook Cord | ||
| 11 | 40263A | 1 | Switch DPDT | ||
| 12 | 40268A | 1 | Electric Cable W/CEE 7/7 (only on 56380063) | ||
| 40249A | 1 | Electric Cable W/BS-1363 (only on 56380064) | |||
| K4 | 13 | 1 | Spring Interlock Button | ||
| K7 | 14 | 1 | Housing Gear Index | ||
| K4 | 15 | 3 | Pin Handle Support | ||
| K3 | 16 | 1 | Handle Support | ||
| K3 | 17 | 1 | Screw M5 X 43 SS Hex Head | ||
| K3 | 18 | 1 | Screw M5 X 40 SS Pan Head Phillips | ||
| K2 | 19 | 2 | Screw M5 X 35 SS Flat Head Phillips | ||
| K2 | 20 | 6 | Screw M5 X 25 SS Flat Head Phillips | ||
| K1 | 21 | 1 | Scr Shoulder 12mm X 35mm, M10-1.5 | ||
| K1 | 22 | 1 | Spring 15 Mm X 15 Mm Long | ||
| 23 | VF54041 | 1 | Handle Plug | ||
| K7 | 24 | 4 | Screw M6 X 40 SS Hex Head | ||
| K3 | 25 | 5 | Screw M5 X 12 SS Truss Head Phillips | ||
| K8 | 26 | 1 | Nut | ||
| K6 | 27 | 2 | Plate-Grooved | ||
| K6 | 28 | 2 | O-Ring | ||
| K4,K8 | 29 | 1 | Washer M4 x 16 | ||
| K7 | 30 | 4 | Nut | ||
| K4 | 31 | 2 | Screw M3 X 25 SS Pan Head Phillips | ||
| K7 | 32 | 4 | Washer | ||
| 33 | Deleted | ||||
| K5 | 34 | 2 | Screw St4-1.4 X25 Pan Head | ||
| K5 | 35 | 2 | Screw St4-1.4 X 30 Pan Head | ||
| K4.K8 | 36 | 1 | Nut M4 SS Nylon Insert | ||
| K3 | 37 | 2 | Nut Lock M5 SS Hex | ||
| K4 | 38 | 1 | Button Interlock | ||
| K8 | 39 | 1 | Spring | ||
| K7 | 40 | 1 | Housing Spring Black | ||
| K4 | 41 | 1 | Clamp Cord | ||
| K5 | 42 | 1 | Strain Relief | ||
| K7 | 43 | 1 | Tube Handle | ||
| K6 | 44 | 1 | Gear Handle Adjustment | ||
| K6 | 45 | 1 | Gear | ||
| K8 | 46 | 1 | Plunger Rod | ||
| K4 | 47 | 1 | Ball Interlock 10mm | ||
| K4 | 48 | 4 | Screw, M4 X 8 SS Pan Head Phillips | ||
| K4 | 49 | 2 | Washer M3 External Tooth | ||
| 50 | 56381542 | 1 | Switch Wire Asm | ||
| K7 | 51 | 2 | Support Handle Tube |
Wiring Diagram
The wiring diagram illustrates the electrical connections for the BU500. It includes a control switch, circuit breaker, and two motor diagrams (labeled 'old' and 'new'), detailing connections for run and start capacitors, and switches.
Key connections shown:
- Motor: BLK, BRN, BLU, WHT, GRN/YEL wires.
- Control Switch: Connects to circuit breaker and motor.
- Circuit Breaker: Protects the electrical system.
- Motor Diagram (old/new): Shows wiring for motor windings, start/run capacitors, and start switch.
Recommended Spare Parts
This section lists recommended spare parts categorized by maintenance class: W (Normal Wear), OM (Ordinary Maintenance), and EM (Extra-Ordinary Maintenance).
Parts List
| PART NO. | QTY | DESCRIPTION | CLASS |
|---|---|---|---|
| FINAL ASSEMBLY | |||
| 40268A | 1 | Cord, Power | EM |
| 40249A | 1 | Cord, Power UK | EM |
| BASE SYSTEM | |||
| 30886A | 1 | Bumper | OM |
| VF14079 | 1 | Belt | OM |
| VF32109 | 1 | Capacitor Run 20 MFD/500vac | OM |
| 56925A | 1 | Driver | OM |
| VF52220 | 1 | Bearing Unit | OM |
| VF999849 | 1 | Capacitor Start 100 MFD/300vac | OM |
| 56381544 | 1 | Decal Kit Nilfisk | EM |
| 56381549 | 1 | Nilfisk BU500 Upper Cover Kit | EM |
| 56381551 | 1 | Nilfisk BU500 Lower Cover Kit | EM |
| 56381554 | 1 | Burnisher Balance Spring Kit | EM |
| 11282A | 2 | Wheel Kit | EM |
| VF52004A | 1 | Pulley | EM |
| VF52009D | 1 | Pulley Motor | EM |
| VF52017N | 2 | Wheel | EM |
| YLQ36000 | 1 | Motor | EM |
| HANDLE ASSEMBLY | |||
| 11274A | 1 | Handle Switch Lever Kit | OM |
| 40263A | 1 | Main Switch | OM |
| 11269A | 1 | Cord Wrap Kit | EM |
| 11273A | 1 | Handle Support Kit | EM |
| 11280A | 1 | Handle Cover Kit | EM |
| 11286A | 1 | Release Spring and Rod Kit | EM |
| 56381558 | 1 | Burnisher Gear Set Kit | EM |
| 56381559 | 1 | Gear Housing and Tube Kit | EM |
| 56381557 | 1 | Gear Housing Cover Kit | EM |
| VF99012 | 1 | Circuit Breaker Asm | EM |
Pad Selector Guide
Information on selecting the appropriate burnishing pads for the BU500.
Pad Descriptions
Natural Blend (Tan): Natural hair and synthetic fiber pad designed for best mark removal. For use on harder finishes or in high traffic areas. Removes marks and scratches while it polishes.
UHS (Aqua): A superior soft pad that lightly polishes the floor for a reflective appearance.
Natural Blend (White): Natural hair and synthetic fiber pad designed for best gloss. Provides excellent results on a wide variety of floor finishes and traffic conditions.
20" (505 mm) Burnishing Pad Selection Chart (RECOMMENDED)
| Part No. | Description | Application | Use | RPM | Color | Finish |
|---|---|---|---|---|---|---|
| 976352 | Natural Blend HS | Burnish | Dry | 1500-3000 | Tan | Soft finish/high traffic |
| 976240 | UHS Aqua Buffer | Burnish | Dry | 1500-3000 | Aqua | Wet-look soft finish |
| 976327 | Natural Blend HS | Burnish | Dry | 1500-3000 | White | Glossy finish |
