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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: | 1701480317 |
| WARRANTY: | LIMITED 5 YEAR WARRANTY |
| WEIGHT: | 11.45 LBS |
| CAPACITY: | 5,000 LBS. |
| TRAVEL: | 15 IN. |
| RETRACTED: | 21 IN. |
| EXTENDED: | 36 IN. |
| MODEL NUMBER: | TWL 170 X |
| HANDLE STYLE: | TOPWIND |
| MATERIAL: | STEEL |
| 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 (Rev-D 6077). This manual covers multiple jack configurations including bolt-on, snap ring, bolt-thru, A-plate, direct-mount, and weld-on pivot tube types. For specific product identification, refer to the stamped markings or decals on your jack.
No. These jacks are not designed for mounting to round tongues. They are designed for flat or rectangular tongues. If you have a round tongue, contact Cequent Performance Products at 1-800-632-3290 or www.cequentgroup.com for alternative solutions.
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 configurations. If your tongue width does not allow this tolerance, the jack may not be compatible with your trailer.
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 configuration. It is recommended to attach a bottom support plate to the bottom of the tongue for additional strength.
Bolt-on jacks include supplied bolts and locknuts. The bolts are inserted through the mounting bracket and mounting straps, with the upper bolts resting on the top of the tongue and lower bolts positioned less than 1/16 inch from the bottom. All bolts are torqued to 25 ft. lbs.
A-plate jacks require three 3/8-16 grade 5 bolts with washers to bolt the A-plate to the coupler. These are torqued to 15-20 ft. lbs. If welding is used, a 3/16 inch fillet weld is required. All welding must be performed by an AWS certified welder.
The manual does not specify the tools required for bolt-on installation. Standard tools for tightening bolts and locknuts to 25 ft. lbs. torque will be needed, including a torque wrench. For weld-on configurations, an AWS certified welder is required.
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 clearance of the handle, trailer light cables, and coupler. After installation is complete, check for interference again.
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. 4) Check for clearance of 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.
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, 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. 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.
The manual does not specify whether drilling is required. It states that you must use the correct mounting hole pattern for your tongue size and that holes must already exist in the mounting bracket and mounting straps. If your tongue does not have pre-drilled holes in the correct locations, drilling may be necessary. Contact Cequent Performance Products at 1-800-632-3290 for guidance on your specific trailer.
No. 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 solution, contact Cequent Performance Products at 1-800-632-3290 to order the appropriate weld-on mounting hardware.
All bolt-on mounting fasteners are torqued to 25 ft. lbs. This applies to both rack jack installations and mounting bracket installations.
The three 3/8-16 grade 5 bolts with washers that attach the A-plate to the coupler are torqued to 15-20 ft. lbs.
A 3/16 inch fillet weld is required for all weld-on tongue jack installations, including A-plate mounting, direct-mount, and weld-on pivot tube configurations. 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. If the jack has a swivel feature, lock the plunger pin into a hole in the mounting bracket before raising or lowering the tongue.
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.
These jacks are designed for vertical loading only. Excessive side forces may cause jack failure and must be avoided. Do not use the jack as a transport device for the implement it is attached to. Minimize movement of the implement while the jack is under load.
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. Before manually moving the trailer, crank the jack to the lowest position.
When using a 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 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.
If your jack is a swivel jack, lock the plunger pin into a hole in the mounting bracket before raising or lowering the tongue.
If your jack is a rack jack, do not raise the gear housing above the inner tube. Doing so may cause damage to the jack.
After installation is complete, check for interference again. Verify that there is no interference from the tow vehicle, tongue, ground, and any other mounted accessories while stationary or in motion. Check for clearance of the handle, trailer light cables, and coupler.
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 jack 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. This should be done at least annually.
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.
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.
Always replace bent, broken, or worn parts before using this product. Inspect the jack regularly and replace any damaged components immediately.
No. These jacks are not designed for round tongues. They are designed for flat or rectangular tongues only.
Three 3/8-16 grade 5 bolts with washers, torqued to 15-20 ft. lbs. For weld-on, a 3/16 inch fillet weld by an AWS certified welder.
No. Do not weld bolt-on brackets or straps to the tongue. Special weld-on brackets are available instead.
25 ft. lbs. for all bolt-on mounting fasteners.
Fully retract and rotate the jack. Remove any optional drop foot or caster before towing.
Vertical loading only. Excessive side forces may cause failure.
At least annually. Lubricate internal gearing and bushings (side-wind models) or screw stem (top-wind models) with automotive grease or lightweight oil.
| Part Number | Model Number | Description | Lift Capacity (lbs.) | Handle Style | Travel (in.) | A Retracted (in.) | B Extended (in.) | C Clearance (in.) |
|---|---|---|---|---|---|---|---|---|
| 150037 | TWL 150 X | No Foot, No Mount | 2,000 | Topwind | 10.00 | 20.40 | 35.40 | - |
| 150010 | SWL 150 | No Foot, No Mount | 2,000 | Sidewind | 10.00 | 17.10 | 27.10 | - |
| 150152 | SWL 150 | No Foot, No Mount | 2,000 | Sidewind | 15.00 | 26.60 | 41.60 | - |
| 1500520317 | SWL 150 X | No Foot, No Mount | 2,000 | Sidewind | 15.00 | 23.60 | 38.60 | - |
| 150000 | TWL 150 | No Foot, No Mount | 2,000 | Topwind | 10.00 | 15.00 | 25.00 | - |
| 1701480317 | TWL 170 | No Foot, No Mount | 5,000 | Topwind | 15.00 | 21.00 | 36.00 | - |
| 170205 | SWL 170 | No Foot, No Mount | 5,000 | Sidewind | 15.00 | 19.20 | 34.20 | - |
| Replacement Parts | ||||||||
| 500236 | End Cap, 2 in. Diameter | |||||||
| 500256 | Sidewind Crank Assembly for 150 Series | |||||||
| 500105 | Sidewind Crank Assembly for 170 Series | |||||||
| 500180 | Topwind Crank Assembly | |||||||
| 500251 | Bearing Kit for 150 Series | |||||||
| 500223 | Thrust Bearing for 170 Series | |||||||
| 500106 | Sidewind Gear Kit for 150 Series and 170 Series | |||||||
| 500205 | Sidewind Crank Gear Box Cover | |||||||
George
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May 22, 2023
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