Liftmaster 041D3452-2, LIMIT SWITCH KIT
LiftMaster 041D3452-2 is a limit switch replacement kit for select 3/4 HP LiftMaster and Chamberlain chain drive garage door openers manufactured after 1995. The kit is used where the opener's travel limit system relies on the matching switch, bracket, and adjustment hardware.
The limit switch assembly is part of the opener's travel control system. When it is damaged or worn, the door may stop short, run past the intended stop point, fail to complete a cycle, or require repeated adjustment. This kit is used to restore the mechanical travel-limit feedback on compatible 3/4 HP opener platforms.
Because the 041D3452-2 suffix matters, it should not be lumped together with every 041D3452-style limit switch. Confirm the opener horsepower, drive type, production year, and parts diagram before ordering.
Compatible With
Use this kit only where the opener parts diagram calls for 041D3452-2 or 41D3452-2.
- Various 3/4 HP LiftMaster chain drive garage door openers manufactured after 1995 that use the matching limit switch assembly
- Various 3/4 HP Chamberlain chain drive garage door openers manufactured after 1995 that call for this kit
- Select post-1995 chain drive mechanical travel systems with the matching switch, bracket, and adjustment screw arrangement
- Not intended as a universal replacement for all 041D3452 limit switch applications
- Not for belt drive, screw drive, DC electronic travel, jackshaft/RJO, or gate operator applications unless specifically shown in the diagram
Also Known As / Related Part Numbers
- 041D3452-2
- 41D3452-2
- Limit switch kit with bracket and adjustment screws
- 3/4 HP limit switch replacement kit
Features & Specifications
| Manufacturer | LiftMaster / Chamberlain Group |
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| Product Type | Limit switch kit |
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| Part Number | 041D3452-2 |
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| Application | Travel limit repair |
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| Compatible Operator Type | Select 3/4 HP post-1995 chain drive residential openers |
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| Included Components | Limit switch, bracket, and adjustment screws |
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| Notes | Suffix -2 is important for fitment |
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Technician Note
If the door runs too far or stops short after installation, set the travel limits with the manufacturer's adjustment procedure and confirm the safety reverse system works properly.
Before Ordering Checklist
- Confirm the opener is a 3/4 HP chain drive model.
- Confirm the manufacturing date is after 1995 when applicable.
- Match the suffix -2 in the replacement parts diagram.
- Inspect the drive gear and limit adjustment system for stripped or broken pieces.
- Do not substitute the base 041D3452 unless the diagram confirms it.
Important Ordering Warnings
- The suffix -2 matters and should be verified before ordering.
- Do not bypass travel or safety functions to keep an opener running.
Professional Advisory
Garage door opener repairs should be completed with the power disconnected and the door properly balanced. For internal motor, harness, or high-voltage diagnosis, use a qualified garage door technician. Never bypass safety sensors, travel controls, or door balance problems to force an opener to run.
Product Questions & Answers
Why is the -2 suffix important?
The -2 suffix identifies a specific limit switch kit application. Similar-looking limit switch kits may not have the same bracket or adjustment arrangement.
Does 041D3452-2 fit belt drive openers?
It is primarily listed for select 3/4 HP LiftMaster and Chamberlain chain drive openers made after 1995. Belt drive applications should be verified by diagram before ordering.
What comes in the kit?
The kit is commonly listed with the limit switch, bracket, and adjustment screws.
Can a bad limit switch stop the opener from closing fully?
Yes. A failed or misadjusted limit switch can cause incomplete open or close travel, but safety sensor and door balance issues should also be checked.
Should the safety reverse be tested after replacing this part?
Yes. Any travel-limit service should be followed by a full open/close test and safety reverse test.
