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Bulldog
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Always the correct part
We know our products
Quality Products
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BULLDOG 8,000 lbs. support capacity square jack serves the agricultural, industrial, construction, horse/livestock trailer, and utility/cargo trailer markets. The compact design of these jacks makes them ideal for tight-fitting applications where 3" and 4" square tube jacks are too big!
| BRAND: | BULLDOG |
| PART NUMBER: | 190758 |
| WARRANTY: | LIMITED 5 YEAR WARRANTY |
| WEIGHT: | 28.5 LBS |
| CAPACITY: | 8,000 LBS. |
| TRAVEL: | 15 IN. |
| RETRACTED: | 12.66 IN. |
| EXTENDED: | 41.16 IN. |
| CLEARANCE: | 12.4 IN. |
| MODEL NUMBER: | SWL 190 DL-B TSMQ W/P&C |
| HANDLE STYLE: | SIDEWIND |
| SPEEDY LIFT: | NO |
| MATERIAL: | STEEL |
| HANDLE BUSHING INCLUDED: | YES |
| ATTACHED WHEELS: | NO |
| COLOR: | GRAY |
| FINISH: | GRAY PAINT |
| GEARS INCLUDED: | YES |
| ROLL PINS INCLUDED: | YES |
| WASHERS INCLUDED: | YES |
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 ground clearance. The manual covers several types: bolt-on rack jacks, snap ring models, bolt-thru models, A-plate jacks, direct-mount jacks, and pivot tube jacks. Each type uses a hand crank to raise or lower the jack vertically.
No. The manual explicitly states: "These jacks are not designed for mounting to round tongues." You must have a flat or rectangular tongue to install any of the jack types covered in this manual.
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. If the gap is larger, the mounting will not be secure.
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. Check for interference again after installation is complete. Also verify you have the correct mounting hole pattern for your tongue size.
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. After installation, check for 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.
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 mounting to trailers with A-plate couplers. 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. 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) 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. The same welding instructions apply to other weld-on mounts.
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.
Drilling requirements depend on the mounting type. Bolt-on and snap ring models use existing holes in the tongue and mount. Bolt-thru models use an existing bolt hole. A-plate and direct-mount models require welding, not drilling. Weld-on pivot tube models require welding. The manual does not indicate that drilling is required for any standard installation.
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 welded installation, you must use the weld-on mounting options (A-plate, direct-mount, or pivot tube) with special brackets designed for welding.
All bolts on bolt-on mounting brackets must be torqued to 25 ft. lbs. This applies to both rack jack and standard bolt-on mounting bracket installations.
The three 3/8-16 grade 5 bolts with washers that attach the jack A-plate to the coupler must be torqued to 15-20 ft. lbs.
All welding for tongue jacks must use a 3/16 inch fillet weld. This applies to A-plate mounting, direct-mount, and weld-on pivot tube installations. All welding must be performed by an AWS certified welder.
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.
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 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.
Before manually moving the trailer, crank the jack to the lowest position.
No. This product is not intended to be used as a transport device for the implement it is attached to. Minimize movement of the implement while the jack is under load.
Operator and bystanders should never position any part of their body under any portion of the product or the load being supported. Do not allow children to play on or around the product or the load being supported. Secure the load, vehicle and trailer from rolling (by blocking wheels) when operating the jack or coupling the trailer.
When using the drop foot or drop leg, 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.
If the product 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.
If the product is a swivel jack, lock the plunger pin into a hole in the mounting bracket before raising or lowering the tongue.
If the product is a rack jack, 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. For top-wind models, apply 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.
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. If equipped, the axle bolt and nut assembly of the caster wheel must also be lubricated with the same lightweight oil.
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.
The manual indicates that supplied bolts and locknuts are included for bolt-on installations, but does not provide a detailed parts list. The number and size of bolts depend on the specific mounting type. Contact Cequent Performance Products at 1-800-632-3290 for a complete parts list for your jack model.
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.
To attach 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.
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.
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.
Always replace bent, broken, or worn parts before using the product.
No. The purchaser/owner must not alter or modify the product. The only exceptions are alterations made pursuant to the product instructions and in a workmanlike manner.
All welding must be performed by an AWS certified welder. This applies to A-plate mounting, direct-mount, and weld-on pivot tube installations.
No. These jacks are not designed for mounting to round tongues. You must have a flat or rectangular tongue.
Available mounting types include: bolt-on rack jacks, bolt-on mounting brackets, snap ring models, bolt-thru models, A-plate jacks (for A-plate couplers), direct-mount (welded), and weld-on pivot tube mounts (round or square).
Torque all bolts on bolt-on mounting brackets to 25 ft. lbs. For A-plate installations, torque the three 3/8-16 grade 5 bolts to 15-20 ft. lbs.
No drilling is required for standard bolt-on, snap ring, bolt-thru, or welded installations. These use existing holes or require welding only.
Fully retract and rotate the jack before towing. If using an optional drop foot or caster, remove it before towing to maximize ground clearance.
Perform lubrication procedures at least annually. For side-wind models, apply automotive grease to internal gearing and lightweight oil to the handle. For top-wind models, apply lightweight oil to the screw stem. In marine environments, flush with fresh water and apply fresh lubricant.
Yes, if you are using a welded mounting type (A-plate, direct-mount, or weld-on pivot tube). All welding must be performed by an AWS certified welder. Bolt-on and snap ring models do not require welding.
Before installing the snap ring, inspect the snap ring groove and remove any debris. Seat the snap ring fully into the groove. If debris is present, the snap ring will not seat completely.
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. Check for interference again after installation is complete. If interference is found, reposition the jack or select a different mounting location.
For bolt-thru model jacks, tighten the locknut until there is little movement in the bushing. If the bushing still has excessive movement after tightening, the locknut may not be tight enough or the bushing may be worn and require replacement.
| Part Number | Model Number | Description | Support Capacity (lbs.) | Lift Capacity (lbs.) | Handle Style | Travel (in.) | A Retracted (in.) | B Extended (in.) | C Clearance (in.) |
|---|---|---|---|---|---|---|---|---|---|
| 190705 | TWS 190 FL-B TSMQ w/P&C | Fixed Leg with Heavy-Duty Base | 8,000 | 5,000 | Topwind | 10.00 | 11.41 | 21.41 | 4.25 |
| 190706 | TWL 190 FL-B TSMQ w/P&C | Fixed Leg with Heavy-Duty Base | 8,000 | 5,000 | Topwind | 15.00 | 12.16 | 27.16 | 10.25 |
| 190708 | TWL 190 DL-B TSMQ w/P&C | Drop Leg with Heavy-Duty Base, Drop Leg Offers 13.50 in. Additional Adjustment | 8,000 | 5,000 | Topwind | 15.00 | 12.66 | 41.16 | 10.25 |
| 190724 | TWL 190 FL-DTS BQ | Fixed Leg with Heavy-Duty Base, without Mating Mount | 8,000 | 5,000 | Topwind | 15.00 | 15.10 | 30.10 | 7.00 |
| 190756 | SWL 190 FL-B TSMQ w/P&C | Fixed Leg with Heavy-Duty Base | 8,000 | 5,000 | Sidewind | 15.00 | 12.16 | 27.16 | 12.40 |
| 190758 | SWL 190 DL-B TSMQ w/P&C | Drop Leg with Heavy-Duty Base, Drop Leg Offers 13.50 in. Additional Adjustment | 8,000 | 5,000 | Sidewind | 15.00 | 12.66 | 41.16 | 12.40 |
| 190704 | TWL 190 DL-BQ | Drop Leg, No Mount, 13.50 in. Additional Adjustment | 8,000 | 5,000 | Topwind | 15.00 | 22.66 | 51.41 | - |
| 190754 | SWL 190 DL-BQ | Drop Leg, No Mount, 13.50 in. Additional Adjustment | 8,000 | 5,000 | Sidewind | 15.00 | 25.06 | 53.56 | - |
| 1907540176 | SWL 190 DL-BQ | Drop Leg, No Mount, 13.50 in. Additional Adjustment | 8,000 | 5,000 | Sidewind | 15.00 | 25.06 | 53.56 | - |
| 500171 | Sidewind Crank Assembly for 190 Series | ||||||||
| 500180 | Topwind Crank Assembly | ||||||||
| 500224 | Thrust Bearing for 190 Series | ||||||||
| 500205 | Sidewind Crank Gear Box Cover | ||||||||
| 500156 | Sidewind Gear Kit for 8,000 lbs. Capacity |
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
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