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Bulldog

Always the correct part
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Always the correct part
We know our products
Quality Products
Free Shipping!
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: | 170205 |
| WARRANTY: | LIMITED 5 YEAR WARRANTY |
| WEIGHT: | 12.14 LBS |
| CAPACITY: | 5,000 LBS. |
| TRAVEL: | 15 IN. |
| RETRACTED: | 19.2 IN. |
| EXTENDED: | 34.2 IN. |
| MODEL NUMBER: | SWL 170 X |
| HANDLE STYLE: | SIDEWIND |
| MATERIAL: | STEEL |
| WHEEL: | NO |
| ATTACHED WHEELS: | NO |
| CYLINDER DIAMETER: | 2.25 IN. |
| SPEEDY LIFT: | NO |
| COLOR: | SILVER |

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 to a trailer tongue that raises and lowers the front of the trailer for coupling, uncoupling, and ground clearance. It is designed for vertical loading only and is available in multiple mounting styles (bolt-on, weld-on, snap ring, bolt-thru, A-plate, direct-mount, and pivot tube) and handle types (side-wind and top-wind crank).
No. These jacks are not designed for mounting to round tongues. They are designed for flat or rectangular tongues only.
No. A-plate jacks are designed for mounting to trailers with A-plate couplers only. If your trailer has a different coupler type, you will need a different mounting style.
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.
Yes. If using a bolt-on jack, you must assure the correct mounting hole pattern for your tongue size. The gap between the mounting bolts and the tongue is not to exceed 1/16 inch (1.5 mm).
1) Place the gear housing on the tongue and insert 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.
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.
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.
Place the jack bracket into the recessed opening on the mount. Place the small end of bushing into the jack bracket and onto the bolt. Tighten 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.
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.
1) All welding must be performed by an AWS certified welder. 2) Place the jack at the desired location. Weld 1 inch in 2 locations on both sides of the jack using a 3/16 inch fillet weld.
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. 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, contact Cequent Performance Products at 1-800-632-3290 or www.cequentgroup.com for the appropriate weld-on brackets.
Torque all locknuts to 25 ft. lbs. for bolt-on mounting bracket installations.
Use three 3/8-16 grade 5 bolts with washers and torque to 15-20 ft. lbs.
Use a 3/16 inch fillet weld for all welded installations, including direct-mount, A-plate, and pivot tube mounts.
The gap between the mounting bolts and the tongue is not to exceed 1/16 inch (1.5 mm).
Fully retract and rotate jack before towing. If using an optional drop foot or caster, always remove drop foot or caster before towing to maximize ground clearance.
Before manually moving trailer, crank to lowest position.
No. These jacks are designed for vertical loading only. Excessive side forces may cause jack failure and must be avoided.
Jack capacity is limited to the lesser of the jack, footplate, or caster wheel capacity. Never exceed maximum rated capacity. Refer to stamped markings or decals on product to obtain rated capacity. If uncertain, contact Cequent Performance Products at 1-800-632-3290 or www.cequentgroup.com.
No. Operator and bystanders should never position any part of body under any portion of this product or the load being supported.
Secure the load, vehicle and trailer from rolling (by blocking wheels) when operating jack or coupling trailer.
No. 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.
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.
If this product has a pivot tube mount, make certain the pivot pin is fully inserted through both sides on the pivot tube and the pivot mount.
If this product is a swivel jack, lock the plunger pin into a hole in the mounting bracket before raising or lowering the tongue.
No. If this product is a rack jack, do not raise the gear housing above inner tube.
All welding must be performed by an AWS certified welder.
The following procedures should be performed at least annually.
For side-wind models, the internal gearing and bushings of the jack 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 light weight oil.
For top-wind models, apply a lightweight oil to the screw stem.
If this product is used in a marine environment, flush the jack assembly and bushings with fresh water, and apply fresh lubricant.
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.
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.
Jack capacity is limited to the lesser of jack or caster. Use 4 3/8 inch bolts, washers, and locknuts as shown.
Always replace bent, broken, or worn parts before using this product.
No. Purchaser/owner must not alter or modify product. The product is not intended to be modified except as specified in the installation instructions and in a workmanlike manner.
Cequent Performance Products warrants the product will be free from defects in both material and workmanship for a period of five years for Bulldog and Fulton products and one year for Pro-Series and Reese Towpower products, ordinary wear and tear excepted; provided that installation and use of the product is in accordance with product instructions.
This limited warranty does not cover: (a) normal wear and tear; (b) damage through abuse, neglect, misuse, or as a result of any accident or in any other manner; (c) damage from misapplication, overloading, or improper installation, including welds; (d) improper maintenance and repair; and (e) product alteration in any manner by anyone other than the manufacturer, with the sole exception of alterations made pursuant to product instructions and in a workmanlike manner.
To make a warranty claim, contact Cequent Performance Products at 47912 Halyard Dr. Suite 100, Plymouth, MI 48170, 1-800-632-3290, identify the product by model number, and follow the claim instructions that will be provided. You will be responsible for return shipping costs. Please retain your purchase receipt to verify date of purchase and that you are the original consumer purchaser. The product and the purchase receipt must be provided to process your warranty claim.
Use only Cequent Performance Products' parts or parts of equal quality for repair. Replacement parts are available through Cequent Performance Products' Customer Service Department, 1-800-632-3290. Please specify product model number.
No. These jacks are not designed for mounting to round tongues. They are designed for flat or rectangular tongues only.
No. A-plate jacks are designed for mounting to trailers with A-plate couplers only.
The gap between the mounting bolts and the tongue is not to exceed 1/16 inch (1.5 mm).
No. Do not attempt to weld bolt-on brackets or straps to the tongue. Special brackets are available for weld-on applications.
Use three 3/8-16 grade 5 bolts with washers and torque to 15-20 ft. lbs.
Fully retract and rotate jack before towing. If using an optional drop foot or caster, remove it before towing to maximize ground clearance.
Perform maintenance at least annually. For side-wind models, apply automotive grease to internal gearing and lightweight oil to handle and caster assembly. For top-wind models, apply lightweight oil to screw stem.
Five years for Bulldog and Fulton products; one year for Pro-Series and Reese Towpower products. Warranty covers defects in material and workmanship only, not wear and tear, abuse, misuse, or improper installation.
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| 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 | |||||||
Sam
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