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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: | 190756 |
| WARRANTY: | LIMITED 5 YEAR WARRANTY |
| WEIGHT: | 24 LBS |
| CAPACITY: | 8,000 LBS. |
| TRAVEL: | 15 IN. |
| RETRACTED: | 12.16 IN. |
| EXTENDED: | 27.16 IN. |
| CLEARANCE: | 12.4 IN. |
| MODEL NUMBER: | SWL 190 FL-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 mechanical device mounted on a trailer tongue that raises and lowers the front of the trailer for coupling and uncoupling from the tow vehicle. The manual covers multiple types: bolt-on rack jacks, snap ring models, bolt-thru models, A-plate jacks, direct-mount jacks, and pivot tube jacks. Each type serves the same function but uses different mounting methods suited to different trailer designs.
No. The manual explicitly states: "These jacks are not designed for mounting to round tongues." You must have a flat or square tongue to use these jacks. If your trailer has a round tongue, contact Cequent Performance Products at 1-800-632-3290 or www.cequentgroup.com for alternative solutions.
No. A-plate jacks are designed specifically for trailers with A-plate couplers only. If your trailer does not have an A-plate coupler, you will need a different jack type. The manual recommends attaching a bottom support plate to the bottom of the tongue for A-plate installations.
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 all positions including handle swing and swivel positions if applicable. After installation is complete, check for interference again. Also verify clearance of the handle, trailer light cables, and coupler.
Torque all locknuts to 25 ft. lbs. (3.5 m/kg). This applies to both bolt-on rack jacks and bolt-on mounting bracket installations. Ensure the gap between mounting bolts and the tongue does not exceed 1/16 inch (1.5 mm).
When bolting the A-plate to the coupler, use three 3/8-16 grade 5 bolts with washers and torque to 15-20 ft. lbs. (2-2.7 m/kg). All welding must be performed by an AWS certified welder.
It depends on the jack type. Bolt-on jacks use bolts and locknuts—no welding required. Weld-on models (direct-mount, A-plate, and pivot tube) require welding by an AWS certified welder. The manual states: "Do not attempt to weld 'Bolt-On' brackets or straps to the tongue. Special brackets are available for 'Weld-On' applications." Choose the mounting type that matches your trailer and installation capability.
All welding must be performed by an AWS certified welder. For direct-mount jacks, weld 1 inch in 2 locations on both sides of the jack using a 3/16 inch fillet weld. For A-plate and pivot tube installations, use a 3/16 inch fillet weld. The manual emphasizes: "All welding must be performed by an AWS certified welder."
1) Place the jack bracket over the mount. 2) Place the snap ring in the groove. 3) Seat the snap ring fully into the groove. Before installing, inspect the snap ring groove and remove any debris. The snap ring must be fully seated for proper operation.
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) Place the jack against the tongue and position the mounting straps on the opposite side. 2) Align the holes in the mounting bracket with the holes in the mounting straps. 3) Insert 4 bolts through the mounting bracket and straps. Upper bolts should rest on top of the tongue; lower bolts should be less than 1/16 inch from the bottom. 4) Secure with locknuts, torque to 25 ft. lbs. 5) Check clearance of handle, trailer light cables, and coupler. The gap between mounting bolts and tongue must not exceed 1/16 inch.
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. 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. Ensure the pivot pin is fully inserted through both sides of the pivot tube and pivot mount before use.
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) 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.
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. Before manually moving the trailer, crank the jack to its lowest position.
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. These jacks are designed for vertical loading only; excessive side forces may cause jack failure and must be avoided.
No. The manual states: "This product is not intended to be used as a transport device for the implement it is attached to. Minimize movement of implement while jack is under load." The jack is designed only for raising and lowering the trailer tongue for coupling and uncoupling.
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 the 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. Before manually moving the trailer, crank the jack to its lowest position. If the jack has a drop foot or drop leg, never attempt to adjust it when there is any load on the jack.
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 jack is a swivel jack, lock the plunger pin into a hole in the mounting bracket before raising or lowering the tongue. This prevents unintended rotation during operation.
If the 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 raising or lowering the tongue. This ensures safe operation and prevents the jack from rotating unexpectedly.
Do not raise the gear housing above the inner tube. Raising it beyond this point may cause damage or failure. Always operate within the design limits of the rack jack.
The following procedures should be performed at least annually: For side-wind models, keep the internal gearing and bushings 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. Apply a lightweight oil to the handle unit at both sides of the tube for side-wind models. If equipped, lubricate the axle bolt and nut assembly of the caster wheel 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.
The manual does not specify required tools for bolt-on installations. For weld-on installations, you will need welding equipment and must hire an AWS certified welder. The manual does not provide a complete tool list for assembly or installation.
The manual states that supplied bolts are included for bolt-on rack jacks, corresponding to the tongue width. Locknuts are also supplied. For bolt-on mounting brackets, 4 bolts and locknuts are included. The manual does not provide a complete parts list for all jack types.
A snap ring is supplied for snap ring model jacks. The manual does not provide a complete parts list for snap ring installations.
A bushing and locknut are supplied for bolt-thru model jacks. The manual does not specify whether the bolt is included or must be sourced separately.
A pivot pin is supplied for weld-on pivot tube installations. The manual does not provide a complete parts list.
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.
No. These jacks are not designed for mounting to round tongues. You must have a flat or square tongue.
Torque all locknuts to 25 ft. lbs. (3.5 m/kg). The gap between mounting bolts and tongue must not exceed 1/16 inch (1.5 mm).
Use three 3/8-16 grade 5 bolts with washers, torque to 15-20 ft. lbs. (2-2.7 m/kg).
| 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 |
Ann
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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Original price was $175.00. Current price is $148.17.You save $26.83 (15%)
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