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Bulldog
Always the correct part
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Always the correct part
We know our products
Quality Products
Free Shipping!
The First 2-Speed Gearbox Designed with a Drop Leg Jack in Mind. BULLDOG's 2-speed 12,000 lbs. support capacity square jack makes cranking easier when fully loaded and faster when unloaded. In low gear, the ratio delivers full lifting power at a super-smooth, easy-lifting 27 turns per 1" (planetary) and 29 turns per 1" (traditional) of travel. In high gear, the cranking ratio is a speedy 9 turns per 1" of travel, the fastest in its weight class.
| BRAND: | BULLDOG |
| PART NUMBER: | 183902 |
| WARRANTY: | LIMITED 5 YEAR WARRANTY |
| WEIGHT: | 76 LBS |
| CAPACITY: | 12,000 LBS. |
| TRAVEL: | 12.5 IN. |
| RETRACTED: | 28.5 IN. |
| EXTENDED: | 54.6 IN. |
| MODEL NUMBER: | SWQ 180 DL-B W/SR T |
| HANDLE STYLE: | TRADITIONAL |
| FOOT PLATE SIZE: | 8.0 IN. X 8.5 IN. |
| FOOT LENGTH: | 8 IN. |
| FOOT WIDTH: | 8.5 IN. |
| MATERIAL: | STEEL |
| SPEEDY LIFT: | NO |
Founded in 1920, Bulldog has become the standard for heavy-duty trailer connection hardware in agricultural, military and utility service. The line covers gooseneck hitches and couplers, A-frame and channel-mount trailer couplers with the Wedge-Latch mechanism, and heavy-duty jacks, built for unmatched strength, reliability and safety under demanding loads.
Bulldog was founded in 1920 and has spent more than a century supplying the connection hardware that heavy trailers depend on. Its market has always been the demanding end: agricultural, military and utility applications where a coupler failure is not an inconvenience but a serious incident. The brand summarises its position as Tough and Tested, and it sits within the Horizon Global towing group alongside Reese, Draw-Tite, Fulton, Tekonsha, Bargman and Wesbar.
Gooseneck equipment is the brand's signature. Gooseneck hitches mount in the truck bed over the rear axle, which places the load where the chassis can carry it properly and allows far tighter turning than a receiver hitch permits. Matching gooseneck couplers attach at the trailer end, in round tube and square configurations across the capacity range used by livestock, equipment and flatbed trailers.
The conventional trailer coupler range is built around the Wedge-Latch mechanism, which uses a wedge to take up wear between coupler and ball rather than relying on a fixed clamp that loosens over time. That matters on a trailer accumulating hard miles, where slack in the coupling shows up as noise and shock loading. Couplers are offered in A-frame form for standard tongues and in channel-mount form for straight tongue and fabricated frames, with adjustable channel versions that let a coupler be positioned to suit the tongue height.
Heavy-duty jacks complete the line, sized for the tongue weights that gooseneck and equipment trailers generate. Across the range the emphasis is consistent: forged and heavy-section components, load ratings backed by testing, and hardware specified for agricultural, military and heavy-duty commercial use rather than occasional recreational towing.
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How to Maintain Your BULLDOG® Square Tube Jack
This is a 12,000 lb square jack. However, the actual capacity is limited to the lesser of the jack, footplate, or caster wheel capacity. Always refer to the stamped markings or decals on the product itself to confirm the rated capacity for your specific unit. Never exceed the maximum rated capacity. If you are uncertain about the capacity, contact Cequent Performance Products at 1-800-521-0510 or visit www.cequentgroup.com.
The jack has a 2-speed shift pattern. The jack handle moves 5/8 inch to 3/4 inch while shifting. High gear is engaged when the shaft is pushed in, and low gear is engaged when the shaft is pulled out. This clearance must be accounted for during installation to ensure the handle can move freely without interference.
These jacks are designed for mounting to flat surfaces only. Before mounting, confirm that there will be no interference from the tow vehicle, tongue, ground, and any other mounted accessories while stationary or in motion. Check for interference in all positions including handle swing (in both gears, if applicable) and swivel positions if applicable. Check for interference again after installation is complete.
Yes. The jack handle moves 5/8 inch to 3/4 inch while shifting between gears. You must ensure this clearance is available during installation and verify there is no interference with the tow vehicle, tongue, ground, or other accessories in all positions, including handle swing in both gears.
All welding must be performed by an AWS (American Welding Society) certified welder. This is a mandatory requirement stated multiple times in the installation instructions. If you are not an AWS certified welder, you must hire a qualified professional to perform the welding.
For direct mounting: three 2-inch long 1/4-inch fillet welds must be placed on both sides of the jack along the contacting surface. The welds should be as far apart as possible to maximize strength under load. All welding must be performed by an AWS certified welder. If mounting in a tandem application, align the jacks carefully so they raise and lower together and share the load equally.
1) All welding must be performed by an AWS certified welder. 2) The non-beveled side of the pivot tube is welded to the tongue. 3) Place the weld-on pivot tube against the tongue and weld all around with a 1/4-inch fillet weld. Align one set of pivot mount holes vertically. 4) Mate the jack to the pivot tube and secure with the supplied pin.
Before mounting, confirm that there will be no interference from the tow vehicle, tongue, ground, and any other mounted accessories while stationary or in motion. Check for interference in all positions including handle swing (in both gears, if applicable) and swivel positions if applicable. Check for interference again after installation is complete. This is critical to safe operation.
Fully retract and/or rotate the jack before towing. This is essential to prevent interference with the road and ensure safe towing.
Never position any part of your body under any portion of this product or the load being supported. Secure the load, vehicle and trailer from rolling by blocking the wheels when operating the jack or coupling the trailer. Do not allow children to play on or around this product or the load being supported. These jacks are designed for vertical loading only; excessive side forces may cause jack failure and must be avoided.
If this product has a drop leg, never attempt to adjust the drop leg when the jack is under load. Keep clear of the pinch point at the drop leg pin. The drop leg will naturally drop or retract very quickly depending on the model. Keep clear of holes in the drop leg. When using the drop leg, make certain the drop leg pin is fully inserted before using the jack.
If this product has a pivot tube mount, make certain the pivot pin is fully inserted through both sides on the pivot tube and the pivot mount before using the jack.
These jacks are designed for vertical loading only. Excessive side forces may cause jack failure and must be avoided. Never exceed the maximum rated capacity of the jack, footplate, or caster wheel, whichever is least.
Check for no clearance between the drop leg pin and housing. If you see clearance, you must adjust the drop leg to fully seat the pin into the hole location. You may need to lubricate the drop leg pin assembly as described in the maintenance section. If you are unable to fully seat the pin, do not use the jack.
The following procedures should be performed at least annually: The gears, bushings, and screw of the jack must be kept lubricated. For side-wind models, apply a small amount of automotive grease with a grease gun at the lubrication points found on the side of the jack near the input shaft. Rotate the jack handle to distribute the grease evenly. A lightweight oil must be applied to the input shaft bushings at both sides of the jack or gearbox. For top-wind models, the screw-stem should be lubricated with a lightweight oil. If equipped, the drop leg pin and spring must be kept clean and lubricated with a lightweight oil.
Use automotive grease (applied with a grease gun) at the lubrication points on side-wind models. Use lightweight oil on the input shaft bushings at both sides of the jack or gearbox, and on the screw-stem of top-wind models. If equipped, the drop leg pin and spring must be kept clean and lubricated with lightweight oil. Use only Cequent Performance Products parts or parts of equal quality for repair.
For side-wind models, the lubrication points are found on the side of the jack near the input shaft. Apply a small amount of automotive grease with a grease gun at these points and rotate the jack handle to distribute the grease evenly.
Always replace bent, broken, or worn parts before using this product. Do not attempt to use the jack with damaged components. Contact Cequent Performance Products Customer Service at 1-800-521-0510 to order replacement parts. Please specify the product model number when ordering.
Cequent Performance Products warrants to the original consumer purchaser that the product will be free from material defects in both material and workmanship for a period of five years, ordinary wear and tear excepted; provided that installation and use of the product is in accordance with product instructions. This warranty does not cover normal wear and tear, damage through abuse, neglect, misuse, accident, misapplication, overloading, improper installation (including welds), improper maintenance and repair, or product alteration by anyone other than the manufacturer. Repair or replacement is your sole remedy. The manufacturer is not liable for service or labor charges. To make a warranty claim, contact Cequent Performance Products at 47774 Anchor Ct. W., Plymouth, MI 48170, 1-800-521-0510, identify the product by model number, and provide the product and purchase receipt.
Yes. These jacks are designed for mounting to flat surfaces only. Before installing, check for interference with the tow vehicle, tongue, ground, and other accessories in all positions, including handle swing and swivel positions.
Yes. All welding must be performed by an AWS (American Welding Society) certified welder. This is mandatory for both direct mounting and pivot tube mounting.
Three 2-inch long 1/4-inch fillet welds must be placed on both sides of the jack along the contacting surface, spaced as far apart as possible to maximize strength.
Yes. Fully retract and/or rotate the jack before towing to prevent interference with the road and ensure safe operation.
The jack is rated at 12,000 lb, but actual capacity is limited to the lesser of the jack, footplate, or caster wheel capacity. Always refer to the stamped markings or decals on your specific unit and never exceed the maximum rated capacity.
At least annually. Apply automotive grease to side-wind models at lubrication points near the input shaft, lightweight oil to input shaft bushings and screw-stem, and lightweight oil to the drop leg pin and spring if equipped.
Always replace bent, broken, or worn parts before using the jack. Contact Cequent Performance Products at 1-800-521-0510 to order replacement parts, and specify the product model number.
If you see clearance between the drop leg pin and housing, you must adjust the drop leg to fully seat the pin into the hole location. You may need to lubricate the drop leg pin assembly with lightweight oil as described in the maintenance section. If you are unable to fully seat the pin, do not use the jack.
You may need to lubricate the drop leg pin assembly with lightweight oil. Apply oil to the pin and spring, and work the pin back and forth to distribute the lubricant. If the pin still does not move freely or fully seat into the hole, do not use the jack and contact Cequent Performance Products at 1-800-521-0510.
| Part Number | Model Number | Support Capacity (lbs.) | Lift Capacity (lbs.) | Gearbox Style | Travel (in.) | A Retracted (in.) | B Extended (in.) | Pin Location | Companion |
|---|---|---|---|---|---|---|---|---|---|
| Non-Spring Return | |||||||||
| 183401 | SWQ 183 DL-BX | 12,000 | 10,000 | Planetary | 12.50 | 28.50 | 54.60 | Side | 182411 |
| 183416 | SWQ 183 DL-BX | 12,000 | 10,000 | Planetary | 12.50 | 29.50 | 55.60 | Front | 182415 |
| 183901 | SWQ 180 DL-BX T | 12,000 | 10,000 | Traditional | 12.50 | 29.50 | 55.60 | Front | 182415 |
| Spring Return | |||||||||
| 183816 | SWQ 183 DL-BX w/SR | 12,000 | 10,000 | Planetary | 12.50 | 29.50 | 55.60 | Front | 182815 |
| 183902 | SWQ 180 DL-B w/SRT | 12,000 | 10,000 | Traditional | 12.50 | 28.50 | 54.60 | Side | 182805 |
| 183903 | SWQ 180 DL-BX w/SR T | 12,000 | 10,000 | Traditional | 12.50 | 29.50 | 55.60 | Front | 182815 |
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Jennifer
Ordered online. Shipment arrived on time and with all the correct parts. Great customer service and friendly staff. Also, pricing was great!
May 22, 2023
