What Would Cause Landing Gear To Make Clunking Sound?

Question

Question:

We replaced the old motor with this new one it goes up and down but slow and makes a clunking sound battery is at 12.7 volts it ran in November when we unhooked it there was wondering what are other parts we need to look at

asked by: Todd S

0

Expert Reply:

Hello Todd, thanks for reaching out. The clunking sound you are describing sounds like a bad gear box on your landing gear. For a new one, you can use the following:

- Replacement Aluminum Gearbox for Stromberg Carlson Landing Gear # LG-179015

expert reply by: Jesse M

0

Replacement Aluminum Gearbox for Stromberg Carlson Landing Gear
(click to enlarge)

Jesse M.

9/29/2025

Hey Todd, did the new gearbox solve the clunking sound issue with your landing gear? I’m curious to know how it worked out for you, as it could help others facing similar problems.

Answer 1

It could be some internal parts but it could also be the electrical system itself. The easiest way to know if the internal parts are the issue or not is to use the manual override to see if it will extend and retract without any electricity. If it…

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Answer 2

The part number 125340 you referenced is actually a motor, and the correct replacement for that is Replacement Motor #LG-142178. However, since you mentioned gears in the gearbox, you will need to replace the entire thing, which for your landing gear…

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Answer 3

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 4

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 5

Hey Bryan, that's a good question. The pricing can definitely be misleading, but I wouldn't use it to judge the quality of the tire. A lot of that comes down to promotions, inventory, and whether you're looking at a tire by itself or…

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Answer 6

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 7

Hi Paul, you’re definitely on the right track here, and I can help you narrow this down with confidence. With your tandem 3,500 lb Dexter axles and 33 inch spacing, both the Dexter EZ Flex part #K71-652-00 and the Lippert Road Armor part #LC53CK are…

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Answer 8

The 5.30-12 tires, being wider, are going to make more contact with the road. This means that the noise, and heat build up will be higher than a 4.80-12 tire but the rolling resistance will actually be less because the tire is larger diameter. The…

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Answer 9

It sounds like you are speaking of the wires for the brake magnets. If this is correct, you will need to connect one of the wires to the brake controller output wire on your trailer connector and the other wire will need to be grounded to a clean…

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Answer 10

The #84 spindle is just a common way to identify the spindle dimensions typically used for 3,500 lb axles. So instead of listing out the parts, people can just say they have #84 spindles and it's easier to know what fits it. The CE Smith Trailer…

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Answer 11

According to Blue Ox, it'll take an experienced installer about 4 to 5 hours to complete the installation of their #BX1128 Base Plate Kit on a 2016 Jeep Grand Cherokee. The install isn't what I'd call super-difficult, but the installation…

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Answer 12

Even though I cannot comment specifically on the grease you used because I am not familiar with it, I can tell you the best grease for trailer bearings is a a grease with a rating of GC-LB, which just means it is made to withstand very high…

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What Would Cause Landing Gear To Make Clunking Sound?

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