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Bulldog
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Always the correct part
We know our products
Quality Products
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BULLDOG round jacks are recognized as the industry standard by leading agricultrual, commercial, horse, livestock, and other trailer manufacturers. For more than three quarters of a centruy, BULLDOG jacks have been demonstrated to be the most reliable, field-proven jacks on the market.
| BRAND: | BULLDOG |
| PART NUMBER: | 151159 |
| WARRANTY: | LIMITED 5 YEAR WARRANTY |
| WEIGHT: | 16.4 LBS |
| CAPACITY: | 2,000 LBS. LIFT, 3,000 LBS. STATIC |
| TRAVEL: | 15 IN. |
| RETRACTED: | 14.5 IN. |
| EXTENDED: | 29.5 IN. |
| CLEARANCE: | 12.2 IN. |
| MODEL NUMBER: | SWL 151 DS |
| HANDLE STYLE: | SIDEWIND |
| MATERIAL: | STEEL |
| FOOT LENGTH: | 7.5 IN. |
| FOOT WIDTH: | 3.9 IN. |
| FOOT PLATE SIZE: | 7.5 IN. X 3.9 IN. |
| WHEEL: | NO |
| ATTACHED WHEELS: | NO |
| CYLINDER DIAMETER: | 2.25 IN. |
| SPEEDY LIFT: | NO |
| COLOR: | GRAY |
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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The model number is F3282ML, Revision D 6077.
No. These jacks are not designed for mounting to round tongues. They are designed for flat tongues only.
Tongue jacks are available in five mounting styles: bolt-on rack jack, bolt-on mounting bracket, snap ring/bolt-thru, direct-mount (weld-on), A-plate (bolt-on or weld-on), and weld-on pivot tube (round or square). The correct style depends on your trailer coupler and tongue configuration.
No. A-plate jacks are designed specifically for mounting to trailers with A-plate couplers only.
Before mounting, confirm there will be no interference from the tow vehicle, tongue, ground, or any other mounted accessories while stationary or in motion. Check for interference in all positions, including handle swing and swivel positions if applicable. Check again after installation is complete.
The manual does not mention battery disconnection. No electrical work is involved in tongue jack installation.
No. Bolt-on jacks use pre-drilled holes in the mounting bracket and mounting straps. No drilling is required. However, you must ensure the correct mounting hole pattern for your tongue size, and the gap between mounting bolts and the tongue must not exceed 1/16 inch.
No. Do not attempt to weld bolt-on brackets or straps to the tongue. Special brackets are available for weld-on applications. Use only the bolt-on method for bolt-on style jacks.
All welding must be performed by an AWS certified welder. For direct-mount jacks, use a 3/16 inch fillet weld, welding 1 inch in 2 locations on both sides of the jack. For A-plate jacks, use a 3/16 inch fillet weld. For pivot tube mounts, weld all around the pivot tube with a 3/16 inch fillet weld. A bottom support plate is recommended for A-plate installations and should also be welded with a 3/16 inch fillet weld.
Torque all locknuts to 25 ft. lbs. for bolt-on rack jacks and bolt-on mounting bracket installations.
Use three 3/8-16 grade 5 bolts with washers and torque to 15-20 ft. lbs. when bolting the jack A-plate to the coupler.
The gap between the mounting bolts and the tongue must not exceed 1/16 inch (1.5 mm).
The manual does not specify tools required for bolt-on installation. Standard tools for tightening bolts and locknuts to 25 ft. lbs. torque would be needed.
Welding equipment and an AWS certified welder are required. The manual does not specify other tools.
Bolt-on jacks include supplied bolts, locknuts, and a mounting bracket. The exact quantity and specifications depend on the mounting style. For A-plate installations, you must supply three 3/8-16 grade 5 bolts with washers.
1) Place the gear housing on the tongue and insert the supplied bolts in holes corresponding to the tongue width. 2) Place the mounting bracket below the tongue with the flat surface against the tongue. 3) Secure with locknuts and torque to 25 ft. lbs.
1) Place the jack against the tongue and position the mounting straps on the opposite side. Align the holes in the mounting bracket with the holes in the mounting straps. 2) Insert the 4 bolts through the mounting bracket and mounting straps. Upper bolts should rest on the top of the tongue; lower bolts should be less than 1/16 inch from the bottom. 3) Secure with locknuts and torque to 25 ft. lbs. 4) Check for clearance of handle, trailer light cables, and coupler.
1) Place the jack bracket over the mount and place the snap ring in the groove. 2) Seat the snap ring fully into the groove. Before installing, inspect the snap ring groove and remove any debris.
1) Place the jack bracket into the recessed opening on the mount. 2) Place the small end of the bushing into the jack bracket and onto the bolt. 3) Tighten the locknut until there is little movement in the bushing. Note: The bolt should be installed between the trailer tongue and mount; the jack bracket will be held by the bushing between the locknut and the mount.
1) All welding must be performed by an AWS certified welder. 2) Place the jack at the desired location. 3) Weld 1 inch in 2 locations on both sides of the jack using a 3/16 inch fillet weld.
1) All welding must be performed by an AWS certified welder. 2) If the A-plate is separate from the jack, align the jack (and foot, if equipped) with the jack and coupler as desired before welding. Use a 3/16 inch fillet weld. 3) Bolt the jack A-plate to the coupler using three 3/8-16 grade 5 bolts with washers, torque to 15-20 ft. lbs. 4) Weld the recommended support plate to the bottom of the trailer frame using a 3/16 inch fillet weld. 5) If your jack is a plain mount type, it may be mounted directly to a coupler with a 3/16 inch fillet weld. 6) Rack jacks with a similar A-plate incorporated into their design may be attached according to these instructions. It is recommended to attach a bottom support plate to the bottom of the tongue.
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 unless otherwise specified on hardware. 3) Place the weld-on pivot tube against the tongue and weld all around with a 3/16 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.
1) Insert the long spacer into the roller followed by the thin spacer and the bolt. 2) Secure to the crank stem with the nut provided.
1) Place the washer over the screw stem and then place the handle over the screw stem. 2) Secure the handle to the screw stem with the bolt and nut provided.
1) Insert the long spacer into the wheel. 2) Set the wheel into the caster body and place the bolt through the caster body and wheel. 3) Secure with the nut provided.
Use 4 3/8 inch bolts, washers, and locknuts as shown in the manual. The jack capacity is limited to the lesser of the jack or caster capacity.
Fully retract and rotate the jack before towing. If using an optional drop foot or caster, always remove it before towing to maximize ground clearance.
Never exceed the maximum rated capacity. The jack capacity is limited to the lesser of the jack, footplate, or caster wheel capacity. Refer to the stamped markings or decals on the product to obtain the rated capacity. If uncertain, contact Cequent Performance Products at 1-800-632-3290 or www.cequentgroup.com.
No. These jacks are designed for vertical loading only. Excessive side forces may cause jack failure and must be avoided.
Crank the jack to the lowest position before manually moving the trailer.
Never position any part of your body under any portion of the jack or the load being supported. Secure the load, vehicle, and trailer from rolling (by blocking wheels) when operating the jack or coupling the trailer. Do not allow children to play on or around the jack or the load being supported. Minimize movement of the implement while the jack is under load. This product is not intended to be used as a transport device for the implement it is attached to.
Make certain the supplied pin is fully inserted through both sides of the inner tube and the drop tube before using the jack. If using an optional drop foot or caster, always remove it before towing to maximize ground clearance. Never attempt to adjust the drop foot or drop leg when there is any load on the jack.
Make certain the pivot pin is fully inserted through both sides of the pivot tube and the pivot mount.
Lock the plunger pin into a hole in the mounting bracket before raising or lowering the tongue.
Do not raise the gear housing above the inner tube.
The following procedures should be performed at least annually.
For side-wind models, the internal gearing and bushings must be kept lubricated. Apply a small amount of automotive grease to the internal gearing by removing the jack cover, or if equipped, use a needle nose applicator or standard grease gun on the lubrication point found on the side of the jack near the crank. Rotate the jack handle to distribute the grease evenly. A lightweight oil must be applied to the handle unit at both sides of the tube for side-wind models. If equipped, the axle bolt and nut assembly of the caster wheel must also be lubricated with the same lightweight oil.
For top-wind models, apply a lightweight oil to the screw stem.
If the product is used in a marine environment, flush the jack assembly and bushings with fresh water, and apply fresh lubricant.
Always replace bent, broken, or worn parts before using this product.
After installation is complete, check for interference again in all positions, including handle swing and swivel positions if applicable. For bolt-on installations, verify clearance of the handle, trailer light cables, and coupler.
No. These jacks are not designed for round tongues. They are designed for flat tongues only.
No. A-plate jacks are designed specifically for trailers with A-plate couplers only.
No. Do not weld bolt-on brackets to the tongue. Special brackets are available for weld-on applications.
Fully retract and rotate the jack before towing. Remove any optional drop foot or caster before towing.
Perform maintenance at least annually. Apply automotive grease to internal gearing and lightweight oil to handle and caster components.
The locknut may not be tight enough. Tighten the locknut until there is little movement in the bushing. Ensure the bolt is installed between the trailer tongue and mount, with the jack bracket held by the bushing between the locknut and the mount.
Inspect the snap ring groove and remove any debris. Ensure the snap ring is fully seated into the groove.
The jack may need lubrication. For side-wind models, apply automotive grease to the internal gearing via the lubrication point near the crank and rotate the handle to distribute evenly. Apply lightweight oil to the handle unit at both sides of the tube. For top-wind models, apply lightweight oil to the screw stem. Perform these procedures at least annually.
If the jack is used in a marine environment, flush the jack assembly and bushings with fresh water and apply fresh lubricant at least annually to prevent corrosion.
| Part Number | Model Number | Description | Lift Capacity (lbs.) | Pin (in.) | Handle Style | Travel (in.) | A Retracted (in.) | B Extended (in.) | C Clearance (in.) |
|---|---|---|---|---|---|---|---|---|---|
| 151401 | TWS 151 DS | L-Bend Swivel Bracket Assembled, Includes Footplate | 2,000 | 1/2 | Topwind | 10.00 | 11.00 | 21.00 | 4.00 |
| 151421 | TWL 151 DS | L-Bend Swivel Bracket Assembled, Includes Footplate | 2,000 | 1/2 | Topwind | 15.00 | 14.50 | 29.50 | 10.00 |
| 151464 | TWL 151 DS | L-Bend Swivel Bracket Assembled, Includes Footplate | 2,000 | 3/8 | Topwind | 15.00 | 16.00 | 31.00 | 4.00 |
| 151101 | SWS 151 DS | L-Bend Swivel Bracket Assembled, Includes Footplate | 2,000 | 1/2 | Sidewind | 10.00 | 11.00 | 21.00 | 6.40 |
| 151110 | SWS 151 DSX | L-Bend Swivel Bracket Assembled, Includes Footplate | 2,000 | 3/8 | Sidewind | 15.00 | 15.80 | 30.80 | 6.25 |
| 151159 | SWL 151 DS | L-Bend Swivel Bracket Assembled, Includes Footplate | 2,000 | 1/2 | Sidewind | 15.00 | 14.50 | 29.50 | 12.20 |
| 171401 | TWS 171 DS | L-Bend Swivel Bracket Assembled, Includes Footplate | 5,000 | 1/2 | Topwind | 10.00 | 11.25 | 21.25 | 4.00 |
| 171412 | TWL 171 DS | L-Bend Swivel Bracket Assembled, Includes Footplate | 5,000 | 1/2 | Topwind | 15.00 | 14.50 | 29.50 | 10.00 |
Ann
The staff was able to quickly assist me with locating the correct product I needed. Shipping was really fast. Item arrived in 2 days. Will be using TowUniverse again!!
May 22, 2023
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