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Treadmill

Model # DTL33940 Official Proform crosstrainer ultimate treadmill

Here are the diagrams and repair parts for Official Proform DTL33940 crosstrainer ultimate treadmill, as well as links to manuals and error code tables, if available.

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

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Model diagram and schematic

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ALL PARTS
Showing 10 of 122 parts  |
Treadmill Safety Key (replaces 125589, 153017) 119038
Treadmill safety key (replaces 125589, 153017)

Part #119038

BEST SELLER
This item is not returnable
$3.14 | 
24% OFF Phone Price : $4.14
In Stock
Kit,wlk-blt, 202557

#NI01

All parts diagram

Kit,wlk-blt,

Part #202557

Replaced by #219170

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Manufacturer substitution
This part replaces 202557. Substitute parts can look different from the original.
$23.69 | 
20% OFF Phone Price : $29.69
In Stock
Black & Decker Treadmill Power Cord (replaces 031033, 031143, 031147, 247991) 031229
#79

Console/walking belt/motor/hood diagram

Black & decker treadmill power cord (replaces 031033, 031143, 031147, 247991)

Part #031229

$11.39 | 
15% OFF Phone Price : $13.39
In Stock
Black & Decker Exercise Equipment Screw 105444
#92

Console/walking belt/motor/hood diagram

Black & decker exercise equipment screw

Part #105444

This item is not returnable
$2.16
In Stock
Black & Decker Treadmill Washer 014063
Black & decker treadmill washer

Part #014063

This item is not returnable
$2.49 | 
29% OFF Phone Price : $3.49
In Stock
Toyostove Treadmill Circuit Breaker 186726
#78

Console/walking belt/motor/hood diagram

Toyostove treadmill circuit breaker

Part #186726

This item is not returnable
$8.99
In Stock
Treadmill Rear Roller 193043
#100

Console/walking belt/motor/hood diagram

Treadmill rear roller

Part #193043

$54.59 | 
10% OFF Phone Price : $60.59
In Stock
Toyostove Exercise Equipment Rubber Pad 157600
Toyostove exercise equipment rubber pad

Part #157600

This item is not returnable
$2.16
In Stock
Weider Belt Guide 198640
#82

Console/walking belt/motor/hood diagram

Weider belt guide

Part #198640

This item is not returnable
$2.16
In Stock
Weider Treadmill Pan Fastener 138853
#84

Console/walking belt/motor/hood diagram

Weider treadmill pan fastener

Part #138853

This item is not returnable
$2.16
In Stock

Symptoms for treadmills

Choose a symptom to see related treadmill repairs.

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Why does my treadmill's walking belt slow down?

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

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Why is my treadmill's walking belt slipping?

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

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Why is my treadmill's walking belt off center?

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

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Why won't my treadmill start even though the console display works?

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

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Why is my treadmill's heart rate sensor not accurate?

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

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Why does my treadmill have no display?

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

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Why won't my treadmill power up?

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

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Repair guides for treadmills

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

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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…

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Repair difficulty
Time required
 15 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'…

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

How to replace a treadmill walking board

A worn-out walking board creates friction with the walking belt and causes the belt to slow down during use. Replace the…

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Repair difficulty
Time required
 30 minutes or less

Effective articles & videos to help repair your fitness & exercise

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

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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.…

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