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Bulldog
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Always the correct part
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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: | 175013 |
| WARRANTY: | LIMITED 5 YEAR WARRANTY |
| WEIGHT: | 13 LBS |
| CAPACITY: | 5,000 LBS. |
| TRAVEL: | 7.5 IN. |
| RETRACTED: | 10.82 IN. |
| EXTENDED: | 22.5 IN. |
| CLEARANCE: | 17 IN. |
| MODEL NUMBER: | TWL 175 X |
| HANDLE STYLE: | TOPWIND |
| MATERIAL: | STEEL |
| WHEEL: | NO |
| ATTACHED WHEELS: | NO |
| CYLINDER DIAMETER: | 2.25 IN. |
| SPEEDY LIFT: | NO |
| COLOR: | GREU |
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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A tongue jack is a device mounted to a trailer tongue that raises and lowers the front of the trailer for coupling, uncoupling, and maneuvering. This manual covers multiple styles: bolt-on rack jacks, snap ring models, bolt-thru models, A-plate jacks, direct-mount jacks, and pivot tube jacks. They are available in side-wind (hand-crank) and top-wind configurations, with optional drop foot, drop leg, or caster wheel accessories for ground support.
No. The manual explicitly states: "These jacks are not designed for mounting to round tongues." Tongue jacks are designed for flat or rectangular tongues only.
The gap between the mounting bolts and the tongue must not exceed 1/16 inch (1.5 mm). This applies to all bolt-on mounting bracket installations. Proper alignment ensures secure fastening and safe operation.
No. A-plate jacks are designed specifically for mounting to trailers with A-plate couplers only. If your trailer has a different coupler type, you will need a different jack mounting style.
Bolt-on rack jacks include supplied bolts and locknuts for mounting. The exact number and size depend on your tongue width. The manual specifies that bolts are inserted into holes corresponding to the tongue width, and the assembly is secured with locknuts torqued to 25 ft. lbs.
For bolt-on installations, you will need a wrench or socket set to tighten the locknuts to 25 ft. lbs. torque. For weld-on installations, you must have access to an AWS-certified welder. For A-plate installations, you will need a wrench for 3/8-16 grade 5 bolts and a welder for the support plate.
Before mounting the jack, 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 and swivel positions if applicable. After installation is complete, check for interference again. Specifically verify clearance of the handle, trailer light cables, and coupler.
1) Place the gear housing on the tongue and insert the supplied bolts into 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. Ensure the gap between mounting bolts and tongue does not exceed 1/16 inch. After installation, check clearance of the handle, trailer light cables, and coupler.
1) Place the jack against the tongue and position the mounting straps on the opposite side of the tongue. 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. The upper bolts should rest on the top of the tongue; the lower bolts should be less than 1/16 inch from the bottom of the tongue. 3) Secure with locknuts and torque to 25 ft. lbs. 4) Check for clearance of handle, trailer light cables, and coupler. Ensure the correct mounting hole pattern for your tongue size.
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 the snap ring, inspect the snap ring groove and remove any debris to ensure proper seating.
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.
A-plate jacks are designed for trailers with A-plate couplers. 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) 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 using 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, torqued 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.
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. This creates four 1-inch welds total (two on each side).
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.
No. Bolt-on tongue jacks use existing holes in the tongue that correspond to the tongue width. The manual states you must assure the correct mounting hole pattern for your tongue size before installation. If your tongue does not have the correct hole pattern, you may need to contact the manufacturer or consider a different mounting style.
No. The manual explicitly states: "Do not attempt to weld 'Bolt-On' brackets or straps to the tongue. Special brackets are available for 'Weld-On' applications." If you need a weld-on installation, you must purchase the appropriate weld-on bracket style, not attempt to weld a bolt-on bracket.
All bolt-on mounting bolts must be torqued to 25 ft. lbs. This applies to both rack jack installations and mounting bracket installations.
The three 3/8-16 grade 5 bolts used to bolt the jack A-plate to the coupler must be torqued to 15-20 ft. lbs.
All weld-on installations require a 3/16 inch fillet weld. This applies to direct-mount, A-plate support plates, and pivot tube installations. All welding must be performed by an AWS-certified welder.
The manual does not mention any electrical components, wiring, or battery connections for tongue jacks. These are mechanical devices operated by hand crank (side-wind or top-wind models) and do not require electrical installation.
Before towing, you must fully retract and rotate the jack. If using an optional drop foot or caster, always remove it before towing to maximize ground clearance. If the jack has a drop foot or drop leg, ensure the supplied pin is fully inserted through both sides of the inner tube and the drop tube before using the jack. If the jack is a swivel model, lock the plunger pin into a hole in the mounting bracket before raising or lowering the tongue.
The jack capacity is limited to the lesser of the jack, footplate, or caster wheel capacity. Never exceed the maximum rated capacity. Refer to the stamped markings or decals on your product to obtain the rated capacity. If uncertain, contact Cequent Performance Products at 1-800-521-0510 or www.cequentgroup.com.
No. These jacks are designed for vertical loading only. Excessive side forces may cause jack failure and must be avoided. Always apply load vertically.
Never position any part of your body under any portion of the 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 the product or the load being supported. Minimize movement of the implement while the jack is under load. Before manually moving the trailer, crank the jack to its lowest position.
If your jack has a pivot tube mount, make certain the pivot pin is fully inserted through both sides of the pivot tube and the pivot mount before using the jack. This ensures safe operation and prevents the jack from shifting during use.
If your jack is a swivel model, lock the plunger pin into a hole in the mounting bracket before raising or lowering the tongue. This prevents unwanted rotation and ensures safe operation.
After installation is complete, check for interference again in all positions including handle swing and swivel positions if applicable. Specifically verify clearance of the handle, trailer light cables, and coupler. Ensure all bolts are properly torqued and all welds are complete and sound.
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 used in a marine environment, flush the jack assembly and bushings with fresh water and apply fresh lubricant.
Use automotive grease for the internal gearing and bushings of side-wind models. Use lightweight oil for the handle unit, caster wheel axle bolt and nut assembly, and the screw stem of top-wind models. If the jack is used in a marine environment, flush with fresh water and apply fresh lubricant annually.
To attach a wheel assembly: 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. For a heavy duty caster, use 4 3/8 inch bolts, washers, and locknuts as shown in the manual. Note: Jack capacity is limited to the lesser of the jack or caster capacity.
To attach a handle assembly: 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. For a top-wind handle assembly: 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.
Always replace bent, broken, or worn parts before using this product. Inspect the jack regularly and replace any damaged components to ensure safe operation.
No. Tongue jacks are not designed for mounting to round tongues. They require flat or rectangular tongues with the correct mounting hole pattern.
You must use the correct mounting hole pattern for your tongue size. The gap between mounting bolts and the tongue must not exceed 1/16 inch. Verify your tongue width matches the jack's bolt pattern before purchasing.
Only if you choose a weld-on installation style (direct-mount, A-plate, or pivot tube). Bolt-on installations require only a wrench. All welding must be performed by an AWS-certified welder.
Torque all bolt-on mounting bolts to 25 ft. lbs. For A-plate bolts, torque to 15-20 ft. lbs.
Yes. If using an optional drop foot or caster, always remove it before towing to maximize ground clearance.
Fully retract and rotate the jack before towing. If it has a drop foot or drop leg, ensure the supplied pin is fully inserted. If it is a swivel model, lock the plunger pin into the mounting bracket.
At least annually. Side-wind models need automotive grease on internal gearing and lightweight oil on the handle. Top-wind models need lightweight oil on the screw stem. In marine environments, flush with fresh water and relubricate annually.
For bolt-thru models, the locknut may not be tightened sufficiently. Tighten the locknut until there is little movement in the bushing. Do not over-tighten, as this can damage the bushing; tighten only until movement is minimal.
The snap ring may not be fully seated in the groove. Before installation, inspect the snap ring groove and remove any debris. Then seat the snap ring fully into the groove. If the snap ring still does not seat properly, check for damage to the groove or snap ring and replace if necessary.
The jack may require lubrication. For side-wind models, apply automotive grease to the internal gearing and lightweight oil to the handle. For top-wind models, apply lightweight oil to the screw stem. Rotate the jack handle to distribute lubricant evenly. Perform this maintenance at least annually. If the jack still does not operate smoothly, inspect for bent, broken, or worn parts and replace before further use.
Verify that you have not exceeded the maximum rated capacity of the jack. The jack capacity is limited to the lesser of the jack, footplate, or caster wheel capacity. Refer to the stamped markings or decals on your product for the rated capacity. If the load is within capacity, inspect for bent, broken, or worn parts and replace before further use. Contact Cequent Performance Products at 1-800-521-0510 if the problem persists.
Interference may have been missed during the initial installation check. Before mounting the jack, 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 and swivel positions if applicable. After installation is complete, check for interference again. If interference is found, the jack may need to be repositioned or a different mounting style may be required.
| Part Number | Model Number | Description | Lift Capacity (lbs.) | Handle Style | Travel (in.) | A Retracted (in.) | B Extended (in.) | C Clearance (in.) |
|---|---|---|---|---|---|---|---|---|
| A-Frame | ||||||||
| 155022 | TWL 155 | Weld-On/Bolt-On Bracket | 2,000 | Topwind | 15.00 | 8.80 | 23.80 | 12.20 |
| 155028 | TWL 155 | Weld-On/Bolt-On Bracket, Clear Zinc Finish | 2,000 | Topwind | 15.00 | 8.40 | 23.40 | 13.00 |
| 155033 | TWL 155X | Weld-On/Bolt-On Bracket | 2,000 | Topwind | 15.00 | 5.40 | 20.40 | 16.00 |
| 155100 | TWL 155 D | 7.5 in. Bracket to Ground Retracted, with Welded Disc Foot | 2,000 | Topwind | 15.00 | 7.50 | 22.50 | 17.00 |
| 151109 | SWS 151 DSX | Weld-On/Bolt-On Bracket | 2,000 | Sidewind | 10.00 | 11.00 | 21.80 | 6.45 |
| 155157 | SWL 155X (RV) | External Gear Box, Handle to Front, Weld-On/Bolt-On Bracket | 2,000 | Sidewind | 13.00 | 8.60 | 21.50 | 13.00 |
| 155100317 | SWL 155 X | External Gear Box, Weld-On/Bolt-On Bracket | 3,000 | Sidewind | 13.00 | 7.00 | 20.00 | 14.50 |
| 1551001344 | SWL 155 X | External Gear Box, Weld-On/Bolt-On Bracket, Clear Zinc Finish | 3,000 | Sidewind | 13.00 | 7.00 | 20.00 | 14.50 |
| 155032 | TWL 155 HD | Weld-On/Bolt-On Bracket | 5,000 | Topwind | 15.00 | 10.30 | 25.30 | 7.00 |
| 175000 | TWL 175 | Weld-On/Bolt-On Bracket | 5,000 | Topwind | 15.00 | 11.00 | 27.10 | 7.00 |
| 175013 | TWL 175 X | Weld-On/Bolt-On Bracket | 5,000 | Topwind | 7.50 | 10.82 | 22.50 | 17.00 |
| 1750209317 | TWL 175 | Weld-On/Bolt-On Bracket | 5,000 | Topwind | 15.00 | 10.82 | 25.82 | 18.70 |
| 1700100317 | SWL 175 | Handle to Front, Weld-On/Bolt-On Bracket | 5,000 | Sidewind | 15.00 | 8.60 | 23.60 | 12.75 |
| Retaining Ring Swivel | ||||||||
| 151444 | TWL 154 | Bolt-On, Retaining Ring Swivel, 1/2 in. Diameter Plunger Pin, 6" Wheel | 1,500 | Topwind | 10.00 | 11.00 | 24.00 | 4.00 |
| 151443 | TWS 159 SX | Bolt-On, Retaining Ring Swivel, 1/2 in. Diameter Plunger Pin, No Base | 2,000 | Topwind | 15.00 | 11.00 | 21.00 | 4.00 |
| 154107 | TWS 154 DCX | Centerbolt, Retaining Ring Swivel, 1/2 in. Diameter Plunger Pin and Footplate | 1,500 | Topwind | 10.00 | 11.00 | 21.00 | 4.00 |
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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