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Bulldog
Always the correct part
We know our products
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Always the correct part
We know our products
Quality Products
Free Shipping!
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: | 190708 |
| WARRANTY: | LIMITED 5 YEAR WARRANTY |
| WEIGHT: | 28 LBS |
| CAPACITY: | 8,000 LBS. |
| TRAVEL: | 15 IN. |
| RETRACTED: | 12.66 IN. |
| EXTENDED: | 41.16 IN. |
| CLEARANCE: | 10.25 IN. |
| MODEL NUMBER: | TWL 190 DL-B TSMQ W/P&C |
| HANDLE STYLE: | TOPWIND |
| 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 lifting device mounted to a trailer tongue that raises and lowers the front of the trailer for coupling, uncoupling, and ground clearance adjustment. These jacks are designed for vertical loading only and are available in multiple mounting styles (bolt-on, weld-on, snap ring, bolt-thru, A-plate, direct-mount, and pivot tube) with side-wind or top-wind handle configurations.
No. These jacks are not designed for mounting to round tongues. They are designed for flat or rectangular tongue profiles. Verify your trailer tongue shape before purchasing.
No. Bolt-on jacks are designed for specific tongue widths. You must ensure the correct mounting hole pattern for your tongue size. The gap between the mounting bolts and the tongue must not exceed 1/16 inch. Verify the correct hole pattern before installation.
No. A-plate jacks are designed specifically for mounting to trailers with A-plate couplers only. Do not attempt to use an A-plate jack on trailers with other coupler types.
Before mounting the jack, confirm 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 clearance of the handle, trailer light cables, and coupler.
Torque all mounting bolts to 25 ft. lbs. (3.5 m/kg). This applies to both rack jack gear housing bolts and bolt-on mounting bracket bolts.
When bolting the jack 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).
No. Bolt-on tongue jacks use existing holes in the trailer tongue and mounting straps. However, you must verify that the correct mounting hole pattern exists for your tongue width and that the gap between mounting bolts and the tongue does not exceed 1/16 inch.
Welding is required only for weld-on mounting styles (direct-mount, A-plate weld-on, and pivot tube weld-on). Bolt-on, snap ring, and bolt-thru models do not require welding. All welding must be performed by an AWS certified welder.
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 these brackets.
For direct-mount installation, all welding must be performed by an AWS certified welder. Weld 1 inch in 2 locations on both sides of the jack using a 3/16 inch fillet weld.
For A-plate installations, use a 3/16 inch fillet weld to attach the A-plate to the jack (if separate) and to weld the recommended support plate to the bottom of the trailer frame. All welding must be performed by an AWS certified welder.
For weld-on pivot tube mounting (round or square), place the pivot tube against the tongue and weld all around with a 3/16 inch fillet weld. The non-beveled side of the pivot tube is welded to the tongue unless otherwise specified on hardware. All welding must be performed by an AWS certified welder.
To attach a snap ring model jack, place the jack bracket over the mount and place the snap ring in the groove. Seat the snap ring fully into the groove. Before installing the snap ring, inspect the snap ring groove and remove any debris.
To attach a bolt-thru model jack, place the jack bracket into the recessed opening on the mount. Place the small end of the bushing into the jack bracket and onto the bolt. Tighten the locknut until there is little movement in the bushing. 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.
For side-wind models, insert the long spacer into the roller, followed by the thin spacer and the bolt. Secure to the crank stem with the nut provided.
For top-wind models, place the washer over the screw stem and then place the handle over the screw stem. Secure the handle to the screw stem with the bolt and nut provided.
To attach a wheel assembly, insert the long spacer into the wheel. Set the wheel into the caster body and place the bolt through the caster body and wheel. Secure with the nut provided.
For heavy duty caster installation, use 4 3/8 inch bolts, washers, and locknuts as shown in the manual. Note that jack capacity is limited to the lesser of the jack or caster capacity.
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 the pivot mount before using 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. Never attempt to adjust the drop foot or drop leg when there is any load on the jack.
Fully retract and rotate the jack before towing. If using an optional drop foot or caster, always remove the drop foot or caster before towing to maximize ground clearance.
Never exceed the maximum rated capacity. Refer to the stamped markings or decals on the product to obtain the rated capacity. Jack capacity is limited to the lesser of the jack, footplate, or caster wheel capacity. If uncertain about the capacity, 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.
Operator and bystanders should never position any part of body under any portion of 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. Do not allow children to play on or around the product or the load being supported. 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.
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. This will prevent damage to the jack mechanism.
The following procedures should be performed at least annually. For side-wind models, apply a small amount of automotive grease to the internal gearing by removing the jack cover or using 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. For top-wind models, apply a lightweight oil to the screw stem. If equipped, the axle bolt and nut assembly of the caster wheel must also be lubricated with the same lightweight oil.
If the product is used in a marine environment, flush the jack assembly and bushings with fresh water, and apply fresh lubricant at least annually.
Always replace bent, broken, or worn parts before using this product.
Use only Cequent Performance Products' parts or parts of equal quality for repair. Replacement parts are available through Cequent Performance Products' Customer Service Department at 1-800-632-3290. Please specify the product model number.
Tongue jacks are available in multiple mounting styles (bolt-on, weld-on, snap ring, bolt-thru, A-plate, direct-mount, pivot tube). Verify your trailer tongue width, shape (flat, not round), and coupler type (A-plate models only). Bolt-on models require correct hole pattern with gap not exceeding 1/16 inch. Contact Cequent Performance Products at 1-800-632-3290 if unsure.
No drilling required for bolt-on, snap ring, or bolt-thru models—they use existing holes. Weld-on models (direct-mount, A-plate, pivot tube) require welding by an AWS certified welder but no drilling.
Bolt-on and rack jack bolts: 25 ft. lbs. A-plate bolts (3/8-16 grade 5): 15-20 ft. lbs. Tighten bolt-thru locknuts until there is little movement in the bushing.
Fully retract and rotate the jack. Remove any optional drop foot or caster before towing to maximize ground clearance.
At least annually. Side-wind models: apply automotive grease to internal gearing and lightweight oil to handle at both sides of tube. Top-wind models: apply lightweight oil to screw stem. Marine environments: flush with fresh water and apply fresh lubricant.
Never exceed the rated capacity stamped on the product. Capacity is limited to the lesser of jack, footplate, or caster capacity. Contact Cequent Performance Products at 1-800-632-3290 if capacity is unclear.
The locknut may not be tightened sufficiently. Tighten the locknut until there is little movement in the bushing. Ensure the bolt is installed between the trailer tongue and mount, and the jack bracket is held by the bushing between the locknut and the mount.
Check for clearance of the handle, trailer light cables, and coupler after installation. If interference is detected, reposition the jack or mounting components to ensure adequate clearance in all positions including handle swing and swivel positions if applicable. Verify clearance again after any repositioning.
The jack may require lubrication. For side-wind models, apply a small amount of automotive grease to the internal gearing by removing the jack cover or using 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 top-wind models, apply a lightweight oil to the screw stem. Perform these procedures at least annually.
If the product is used in a marine environment, flush the jack assembly and bushings with fresh water and apply fresh lubricant at least annually to prevent rust and corrosion.
Verify that the load does not exceed the maximum rated capacity stamped on the product. Jack capacity is limited to the lesser of the jack, footplate, or caster wheel capacity. If the load is within capacity, check that all bolts are torqued to specification (25 ft. lbs. for bolt-on models, 15-20 ft. lbs. for A-plate models) and that the jack is not damaged. Always replace bent, broken, or worn parts before using the product.
| 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 |
George
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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