This detailed 8516-III illustration accompanies the revision III service list with its original blower, casing, burner, electrode and gas-valve references. Alternative valve and slide-plate rows reflect serial changes and must not be treated as universal substitutions.
Use the illustration number to locate the original manufacturer part reference. Select a linked part number to view product details and availability. Check the furnace model, serial-number range and replacement notes before ordering.
Original part numbers for Excalibur 8516-III
| Reference | Manufacturer part number | Quantity | Part description |
|---|---|---|---|
| 1 | 36170 | 1 | BLOWER WHEEL USE 37764 |
| 1 | 37764 | 1 | BLOWER WHEEL USE 33126 |
| 1 | 33126 | 1 | BLOWER WHEEL KIT |
| 2 | 33580 | 1 | BLOWER HOUSING COVER |
| 3 | 36178 | 1 | BLOWER HOUSING ASSEMBLY |
| 4 | 36332 | 1 | PLATE & GASKET ASSY |
| 5 | 33647 | 1 | BURNER BOX ASSY |
| 6 | 33842 | 1 | BURNER - NLA |
| 7 | 33165 | 1 | EXTENSION BOX KIT |
| 8 | 32331 | 1 | 7AMP CIRCUIT BREAKER USE 33751 |
| 8 | 33751 | 1 | CIRCUIT BREAKER 7-AMP |
| 8 | 35791 | 1 | HYDRO FLAME 5AMP BREAKER |
| 9 | 33475 | 1 | REPLACEMENT VALVE COIL - DC USE 31000 |
| 9 | 31000 | 1 | COIL, WHITE ROGERS DC |
| 10 | 37107 | 1 | COMBUSTION WHEEL USE 33128 |
| 10 | 33128 | 1 | COMBUSTION AIR WHEEL |
| 11 | 36175 | 1 | CONTROL BOX ASSY |
| 12 | 33620 | 1 | INNER DOOR HINGE - 1PR |
| 13 | 33754 | 1 | DOOR ASSY, DELUXE, 02, COLONIAL WHITE |
| 13 | 33756 | 1 | DOOR ASSY, DELUXE, 04. POLAR WHITE |
| 13 | 33764 | 1 | EXCALIBUR DOOR, BEIGE |
| 13 | 34517 | 1 | EXCALIBUR DOOR, GREY |
| 14 | 33729 | 1 | SLIDE PLATE - NLA - BEFORE S/N 0654748 |
| 14 | 37411 | 1 | SLIDE PLATE - AFTER S/N 0654747 |
| 15 | 31030 | 1 | T-STAT - BEIGE USE 38452 |
| 15 | 38452 | 1 | T-STAT HEAT ONLY - BROWN |
| 15 | 38453 | 1 | THERMOSTAT HEAT ONLY- WHITE |
| 16 | 33586 | 1 | VALVE BRACKET - USE WITH 33337 |
| 16 | 37426 | 1 | VALVE BRACKET WR - USE WITH 37383 |
| 17 | 33337 | 1 | WHITE ROGERS VALVE USE 38607 - BEFORE S/N 0654748 |
| 17 | 38607 | 1 | GAS VALVE USE 31155 - BEFORE S/N 0654748 |
| 17 | 31155 | 1 | KIT, VALVE STRAIGHT, 12VDC WHITE-RODGERS - BEFORE S/N 0654748 |
| 17 | 37383 | 1 | GAS VALVE, SIDE OUTLET USE 31150 - AFTER S/N 0651155 |
| 17 | 38604 | 1 | WHITE ROGERS VALVE USE 31150 - AFTER S/N 0654748 |
| 17 | 31150 | 1 | GAS VALVE, SIDE OUTLET, 12 VDC COIL - WHITE-ROGERS - AFTER S/N 0654748 |
| 18 | 36180 | 1 | WIRING HARNESS ASSY |
| 18 | 36290 | 1 | FIELD PLUG ASSEMBLY |
| 19 | 33650 | 1 | DRAFT CAP ASSEMBLY ADJUSTABLE USE 37619 |
| 19 | 37619 | 1 | DRAFT CAP |
| 20 | 36716 | 1 | IGNITION BOARD (DC) WAS SUPERCEEDED BY 38676 USE 31501 |
| 20 | 38676 | 1 | DSI BOARD WAS SUPERCEEDED USE 31501 |
| 20 | 31501 | 1 | ELECTRONIC IGNITION BOARD |
| 21 | 33686 | 1 | IGNITION BOARD BRACKET USE 34541 |
| 21 | 34541 | 1 | BRACKET DSI DC MOUNT |
| 22 | 31474 | 1 | DUCT ADAPTER 4 INCH |
| 23 | 31361 | 1 | DUCT COVER PLATE, 4 INCH |
| 24 | 37176 | 1 | ELECTRODE, SINGLE SENSE USE 36999 |
| 24 | 36999 | 1 | DUAL SENSE ELECTRODE USE 33625 |
| 24 | 33625 | 1 | ELECTRODE KIT- DUEL SENSE |
| 25 | 32172 | 1 | DSI ELECTRODE GASKET-DUAL SENSE |
| 25 | 37100 | 1 | SINGLE SENSE ELECTRODE GASKET |
| 26 | 34438 | 1 | FLEX ADAPTER PLATE |
| 27 | 33567 | 1 | GAS INLET PLUG - BEFORE S/N 0654748 |
| 27 | 37410 | 1 | GAS INLET PLUG - AFTER S/N 0654747 |
| 28 | 35193 | 1 | HIGH TENSION LEAD USE 34571 - BEFORE S/N 0654748 |
| 28 | 34571 | 1 | KIT, LD2 HIGH TENSION LEADS - BEFORE S/N 0654748 |
| 28 | 37419 | 1 | HIGH TENSION WIRE - AFTER S/N 0654747 |
| 29 | 33565 | 1 | INLET MANIFOLD - BEFORE S/N 0654748 |
| 30 | 36277 | 1 | BOTTOM PLENUM PLATE |
| 31 | 33579 | 1 | INNER DOOR |
| 32 | 36176 | 1 | LIMIT SWITCH USE 37022 |
| 32 | 37022 | 1 | LIMIT SWITCH 190 DEGREE |
| 33 | 37360 | 1 | MOTOR BRACKET |
| 34 | 33634 | 1 | MOTOR MOUNTING WALL |
| 35 | 32841 | 1 | MOTOR GASKET |
| 36 | 37696 | 1 | MOTOR 8516/20 USE 37359 |
| 36 | 37359 | 1 | MOTOR KIT PF20076Q |
| 37 | 31257 | 1 | BURNER ORIFICE #56 |
| 38 | 33847 | 1 | DOOR CATCH SCREW TYPE (2PK) |
| 39 | 33566 | 1 | OUTLET MANIFOLD - BEFORE S/N 0654748 |
| 39 | 37392 | 1 | MANIFOLD OUTLET - AFTER S/N 0654747 |
| NS | 31043 | 1 | INLET FITTING, MALE BRASS 3/8X3/8 |
| 40 | 31017 | 1 | KLIXON TIME DELAY RELAY |
| 41 | 35052 | 1 | SAIL SWITCH USE 36680 |
| 41 | 37716 | 1 | SAIL SWITCH USE 36680 |
| 41 | 36680 | 1 | SAIL SWITCH USE 31377 |
| 41 | 31377 | 1 | SAIL SWITCH |
| 42 | 37960 | 1 | HEATING ELEMENT KIT |
| 43 | 32926 | 1 | GASKET, HEATING ELEMENT |
| 44 | 32173 | 1 | ELBOW-3/8X3/8 PFT |
| 45 | 33854 | 1 | RECESSED DOOR PANEL CW |
| 45 | 33856 | 1 | RECESS PAN ASSY P/W |
| 45 | 33863 | 1 | RECESS PAN ASSY C/W - USED BY FLEETWOOD |
| 45 | 33864 | 1 | RECESS PAN ASSY BEIGE |
| 45 | 35065 | 1 | RECESS PAN ASSY GREY |
| 46 | 33851 | 1 | RECESS PAN BRACKET |
| NS | 36121 | 1 | ON-OFF SWITCH USE 31092 |
| NS | 31092 | 1 | ON/OFF SWITCH KIT |
Replacement parts shown in the diagram
These listings match manufacturer numbers linked in the parts table. Check the complete furnace model, serial number and version of each component before ordering. View product pages for current availability.
Diagram ref 1 · MPN 33126
Atwood 33126 Furnace Blower Wheel with Clamp - 8500 Series
View product and availability
Diagram ref 20 · MPN 31501
Atwood 31501 12V DSI Furnace Ignition Board With Fan Control
View product and availability
Diagram ref 22 · MPN 31474
Atwood 31474 Aluminum 4-Inch RV Furnace Duct Collar
View product and availability
Diagram ref 32 · MPN 37022
Atwood 37022 190°F High-Limit Switch for 8500 Furnaces
View product and availability