Amana
Furnace

Model # OSC-112-4 Official Amana oil furnace

Here are the diagrams and repair parts for Official Amana OSC-112-4 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 275 parts  |

Filter, Disposable, 17 1/2 X 30 X 1 C9401810
#29B

(oh-84d) (oh-96d) (oh-84) (oh-84-3) (oh-96) (oh-96-3) (oh-112) (oh-112-4) (oh-140) (oh-140-4) (oh-168) (oh-168-4) (oh-184) (oh-184-5) diagram

Filter, disposable, 17 1/2 x 30 x 1

Part #C9401810

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

Motor, 1/6 H.p. M0304101
Motor, 1/6 h.p.

Part #M0304101

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

Front Tie Angle B9215904
#24D

(oh-84d) (oh-96d) (oh-84) (oh-84-3) (oh-96) (oh-96-3) (oh-112) (oh-112-4) (oh-140) (oh-140-4) (oh-168) (oh-168-4) (oh-184) (oh-184-5) diagram

Front tie angle

Part #B9215904

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

Felt, 1/8 X 1 1/2 X 63 A9003214
#41B

(ol-84) (ol-96) (ol-96-3) (ol-112) (ol-112-4) (ol-140) (ol-140-4) diagram

Felt, 1/8 x 1 1/2 x 63

Part #A9003214

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

Top Panel Assembly B9230901
#31A

(osc-96d) (osc-96) (osc-96-3) diagram

Top panel assembly

Part #B9230901

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

Insulation, 11 X 26 1/2 B9211712

#NI

All parts diagram

Insulation, 11 x 26 1/2

Part #B9211712

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

Coupling Assembly, Flexible (motor To Pump) D9613815
Coupling assembly, flexible (motor to pump)

Part #D9613815

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

Fan Relay, S.p.s.t., Mhr856b1002b B9210001
Fan relay, s.p.s.t., mhr856b1002b

Part #B9210001

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

Air Band D9613817
Air band

Part #D9613817

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

Furnace Blower Slide Angle B9221401
#37A

(oh-84d) (oh-96d) (oh-84) (oh-84-3) (oh-96) (oh-96-3) (oh-112) (oh-112-4) (oh-140) (oh-140-4) (oh-168) (oh-168-4) (oh-184) (oh-184-5) diagram

Furnace blower slide angle

Part #B9221401

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

Symptoms for treadmills

Choose a symptom to see related treadmill repairs.

Main causes: no power, bad power cord, tripped or faulty overload switch, bad power switch, wiring failure, bad motor co…

Main causes: rear roller out of alignment, damaged walking belt, bad roller…

Main causes: missing safety key, bad control console, wiring failure, faulty motor control board, bad drive motor…

Main causes: faulty sensors, wiring failure, bad control console…

Main causes: bad control console, wiring failure, bad motor control board…

Main causes: damaged walking belt, improper belt tension, lack of belt lubricant, bad drive motor…

Main causes: damaged walking belt, improper belt tension, bad roller bearing…

Repair guides for treadmills

These step-by-step repair guides will help you safely fix what’s broken on your treadmill.

How to replace a treadmill motor controller

How to replace a treadmill motor controller

Your treadmill motor won't run with a defective motor controller. Replace the motor controller if it doesn't operate the…

Repair difficulty
Time required
 15 minutes or less
How to replace a treadmill walking belt

How to replace a treadmill walking belt

A worn walking belt will begin to slow down during use. If your treadmill walking belt is worn out, replace it using the…

Repair difficulty
Time required
 45 minutes or less
How to replace a treadmill drive motor

How to replace a treadmill drive motor

A defective drive motor won't run when activated by the motor controller. Replace the treadmill drive motor if it doesn'…

Repair difficulty
Time required
 15 minutes or less

Effective articles & videos to help repair your furnaces

Use the advice and tips in these articles and videos to get the most out of your treadmill.

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.…