Amana
Furnace

Model # OSCH-140 Official Amana oil furnace

Here are the diagrams and repair parts for Official Amana OSCH-140 oil furnace, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
Showing 10 of 121 parts  |

Choke, 2" Gray D9613818
#57A

Replacement parts diagram

Choke, 2" gray

Part #D9613818

The manufacturer no longer makes this part, and there's no substitute part

Collar, Thrust, 3/4" 5151200 M0875807
#47A

Replacement parts diagram

Collar, thrust, 3/4" 5151200

Part #M0875807

The manufacturer no longer makes this part, and there's no substitute part

Motor Pulley - 1/2" C5252201
#40A

Replacement parts diagram

Motor pulley - 1/2"

Part #C5252201

The manufacturer no longer makes this part, and there's no substitute part

Blower Shaft, 14-1/2" 3/4" - 5612006 M0875105
#44A

Replacement parts diagram

Blower shaft, 14-1/2" 3/4" - 5612006

Part #M0875105

The manufacturer no longer makes this part, and there's no substitute part

Insulation, 28 3/4 X 36 B9211719
Insulation, 28 3/4 x 36

Part #B9211719

The manufacturer no longer makes this part, and there's no substitute part

Heat Exchanger And Combustion Chamber Assembly D9607801
#24A

Replacement parts diagram

Heat exchanger and combustion chamber assembly

Part #D9607801

The manufacturer no longer makes this part, and there's no substitute part

Blower Block-off B9230501
#49B

Replacement parts diagram

Blower block-off

Part #B9230501

The manufacturer no longer makes this part, and there's no substitute part

Rear Right Gusset B9240102
#29B

Replacement parts diagram

Rear right gusset

Part #B9240102

The manufacturer no longer makes this part, and there's no substitute part

Front Left Gusset B9240301
#22C

Replacement parts diagram

Front left gusset

Part #B9240301

The manufacturer no longer makes this part, and there's no substitute part

Insulation, 29 X 35 1/2 B9211716
Insulation, 29 x 35 1/2

Part #B9211716

The manufacturer no longer makes this part, and there's no substitute part

Symptoms for gas ranges

Main causes: gas supply problem, faulty pressure regulator, clogs in burner or orifice, control system failure, faulty t…

Main causes: burner igniter switch failure, bad spark module, dirty or damaged spark electrode, wiring failure…

Repair guides for gas ranges

How to replace an oven temperature sensor on a gas range

How to replace an oven temperature sensor on a gas range

See how to replace an oven temperature sensor on a gas range.…

Repair difficulty
Time required
 15 minutes or less
How to replace a range spark module

How to replace a range spark module

Follow these step-by-step instructions to put the fire back into the surface burners on your gas range by replacing the …

Repair difficulty
Time required
 30 minutes or less
How to replace a gas range oven control board

How to replace a gas range oven control board

These step-by-step instructions explain how to replace an oven control board on a gas range…

Repair difficulty
Time required
 15 minutes or less

Effective articles & videos to help repair your furnaces

How to get your furnace ready for winter

How to get your furnace ready for winter

Get expert tips for preparing your furnace for winter. Follow maintenance tips to keep your furnace in top shape.…

Introducing new technical repair content that we’re developing for the Sears Technical Institute

Introducing new technical repair content that we’re developing for the Sears Technical Institute

Learn about Sears Technical Institute and the advanced technical content being developed for aspiring appliance techs.…

Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect.…