Bulldog 2x 12K Jacks Dual Landing Gear & Electric Motor Kit w/ Cross Shaft Pipe Combo Drop Leg w/ Spring Return w/ Side Pin Powered Drive- 26" Lift
Model: 182800 182805 CS730300 1824200100Includes Everything Pictured:
- Bulldog 12,000 lbs. Square Trailer Jack Sidewind 26" Lift Drop Leg w/ Spring Return w/ Plunger Pin On Same Side as Handle
- Bulldog 12,000 lbs. Square Trailer Jack Sidewind 26" Lift Drop Leg w/ Spring Return w/ Plunger Pin On Same Side as Handle
- Bulldog 12,000 lbs. Electric Powered-Drive Trailer Jack Kit
- Cross Shaft Tube w/Slotted Ends & Mounting Hardware, 72-3/4" Length (Can be cut to fit your length)
Strong, durable, and sturdy, the BULLDOG 12,000 lbs. support capacity square jack is the BIG reason why BULLDOG has carried the load in agricultural, construction, heavy-duty utility, and horse/livestock trailer industries since 1923. All BULLDOG 4" square jacks are rated for 12,000 lbs. support capacity and 10,000 lbs. lift capacity. The strength of the product, plus the wide variety of styles, makes this jack the best choice in its product class.
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4" square tubing, 7-gauge superior alloy steel
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Painted outer tube, inner tube, and drop leg
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Drop leg option with 5 positioning holes
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Easy-access gear box with grease fitting for routine maintenance
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12.5" screw travel, 13.5" of additional adjustment with drop leg
-
Painted (with or without labels) or powder paint optional
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Limited 5-year warranty
-
ASABE Compliant
Specifications:
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Support Capacity: 12,000 lbs.
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Lift Capacity: 10,000 lbs.
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Retracted Bracket Height: 27.4"
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Extended Bracket Height: 53.6"
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Travel/Lift: 12.5"
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This Jack is intended to be welded on directly onto your application
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Spring Return Drop Leg w/ heavy-duty base
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Drop Leg offers 13.50" of additional adjustment
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Drop Leg pull pin is on the side (same side as the handle)
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Crank sold separately
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Sidewind model - 1:1.5 gear ratio
- 4" Tubing width
Bulldog Powered Drive Kit for Single Speed Jacks
Designed for use with BULLDOG 12,000 lbs. and Twin Cam jacks. Lifts 50% more than competition
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Lifts 50% more than competition
-
Lifts 3" per minute at typical working loads
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Can be manually cranked in the event of power loss
-
Can be used in tandem applications
-
5-year warranty
-
State of the art 12VDC electric motor
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Quiet operation - 50% quieter than competitive units
-
Efficient use of electrical power - 60% more efficient than competitive units
-
Permanently lubricated to provide years of maintenance free use
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Power drive dimensions are 8" length x 3-9/16" width x 6-3/16" height
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Custom designed wiring harness & rocker switch enclosed in a weather proof box
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Utilizes a 25 amp circuit breaker with push button reset feature
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Can be used in both single & tandem jack applications Kit includes all necessary components for ease of installation
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Powered drive assembly
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Torque stop tube with energy absorption device
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Replacement bevel gear & dowel pin
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Terminal box
Install Instructions:
Remove the jack cross shaft. If your jack has non-welded hex bushings, refer to Service Bulletin F3310 (included). If you are installing the powered drive on a planetary two speed jack, refer to Service Bulletin F3376 (included). Refer to steps #1 through #5 for instructions on removing the cross shaft. Warning: Failure to follow these warnings and instructions may result in property damage, serious bodily injury, and/or death. ®
- Replace the jack cross shaft temporarily with the powered drive/shaft. Install the shaft such that the powered drive is on the non-geared side of the jack with the motor down and within the profile of the jack (see Fig. 1). For a tandem jack system, the powered drive should be between the two jacks and installed on the “street-side” jack. For the tandem two-speed installation, the grease zerks will no longer be easily accessible. Your option is to drill two ¼” holes on an accessible side of the jack outer tube, and install new grease zerks (not included). Proceed with torque stop tube attachment.
- With the powered drive/shaft temporarily installed, use it to locate the torque stop tube on the jack outer tube wall (see Fig. 1).
- Place the torque stop tube on the rubber bumper (with the powered drive/shaft installed into the jack) and mark the location of the torque stop tube on the outer tube of the jack. Remove the powered drive/shaft and weld the torque stop tube on to the jack outer tube at your marked location (see Fig. 1).
- Replace the powered drive/shaft. Make sure to place the energy-absorbing rubber bumper into the torque stop tube when assembling. This prevents the motor from rotating. Follow instructions of the appropriate Service Bulletin (see above) in reverse order to reassemble the jack. Use the standard hole for normal installation (see Fig. 2; do not use hole #2).
- Attach the powered drive cover using the ¼” x 1” bolts and ¼” rubber bonded washers (included). Sandwich the cover between two rubber bonded washers on each bolt with the rubber side against the cover. Then, screw the bolts into the mounting flange holes. Torque the bolts to 6 ft. lbs. Your option is to apply a thread lock or retaining compound (not included) to the bolts. Place Bulldog decal (included) on outside of cover.
Running Tandem Jacks from the Powered Drive
If you plan to run tandem jacks from the powered drive, you will need to use the hex coupling (included). This coupling can be welded to a length of 1 inch Schedule 40 pipe (see Figure 3). Slide the hex coupling end of the pipe over the hex shaft of the powered drive. Cut the other end of the pipe such that it will just clear the end of the second jack’s cross shaft. Cross drill a ⅜” hole approximately 1 inch from the end of the pipe. Slide the pipe over the second jack’s cross shaft and attach with a ⅜” x 2” long bolt and lock nut, Grade 5 (not included; see Figure 4). Torque to 18 ft. lbs. Make sure the jacks are in the same position in reference to the ground prior to final connection.
Wiring Instructions:
- To avoid accidental shock and/or damage to the electrical system, disconnect the battery ground cable.
- Attach the terminal box to the trailer at a location that will allow for connection of the powered drive leads to the terminal box studs. See wiring diagram (Figure 5).
- Attach the powered drive leads and the wiring harness leads to the terminal box studs. To protect the leads, enclose them in a section of non-split tubing or loom (included).
- Locate and attach the switch box of the wiring harness at a desired location on the trailer (mounting hardware not included).
- Attach the battery leads to the terminal box studs. Attach the terminal box cover.
- Reconnect the battery ground and test the op
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Wiring harness & switch box
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Hex coupling (not shown, required when using in a tandem jack application)
-
Weather resistant cover (not shown)
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Product Details
- Brand: Bulldog
- Model: 182800 182805 CS730300 1824200100
- Includes: 24K 1-Speed Landing Gear Jacks + Motor
Description
Includes Everything Pictured:
- Bulldog 12,000 lbs. Square Trailer Jack Sidewind 26" Lift Drop Leg w/ Spring Return w/ Plunger Pin On Same Side as Handle
- Bulldog 12,000 lbs. Square Trailer Jack Sidewind 26" Lift Drop Leg w/ Spring Return w/ Plunger Pin On Same Side as Handle
- Bulldog 12,000 lbs. Electric Powered-Drive Trailer Jack Kit
- Cross Shaft Tube w/Slotted Ends & Mounting Hardware, 72-3/4" Length (Can be cut to fit your length)
Strong, durable, and sturdy, the BULLDOG 12,000 lbs. support capacity square jack is the BIG reason why BULLDOG has carried the load in agricultural, construction, heavy-duty utility, and horse/livestock trailer industries since 1923. All BULLDOG 4" square jacks are rated for 12,000 lbs. support capacity and 10,000 lbs. lift capacity. The strength of the product, plus the wide variety of styles, makes this jack the best choice in its product class.
-
4" square tubing, 7-gauge superior alloy steel
-
Painted outer tube, inner tube, and drop leg
-
Drop leg option with 5 positioning holes
-
Easy-access gear box with grease fitting for routine maintenance
-
12.5" screw travel, 13.5" of additional adjustment with drop leg
-
Painted (with or without labels) or powder paint optional
-
Limited 5-year warranty
-
ASABE Compliant
Specifications:
-
Support Capacity: 12,000 lbs.
-
Lift Capacity: 10,000 lbs.
-
Retracted Bracket Height: 27.4"
-
Extended Bracket Height: 53.6"
-
Travel/Lift: 12.5"
-
This Jack is intended to be welded on directly onto your application
-
Spring Return Drop Leg w/ heavy-duty base
-
Drop Leg offers 13.50" of additional adjustment
-
Drop Leg pull pin is on the side (same side as the handle)
-
Crank sold separately
-
Sidewind model - 1:1.5 gear ratio
- 4" Tubing width
Bulldog Powered Drive Kit for Single Speed Jacks
Designed for use with BULLDOG 12,000 lbs. and Twin Cam jacks. Lifts 50% more than competition
-
Lifts 50% more than competition
-
Lifts 3" per minute at typical working loads
-
Can be manually cranked in the event of power loss
-
Can be used in tandem applications
-
5-year warranty
-
State of the art 12VDC electric motor
-
Quiet operation - 50% quieter than competitive units
-
Efficient use of electrical power - 60% more efficient than competitive units
-
Permanently lubricated to provide years of maintenance free use
-
Power drive dimensions are 8" length x 3-9/16" width x 6-3/16" height
-
Custom designed wiring harness & rocker switch enclosed in a weather proof box
-
Utilizes a 25 amp circuit breaker with push button reset feature
-
Can be used in both single & tandem jack applications Kit includes all necessary components for ease of installation
-
Powered drive assembly
-
Torque stop tube with energy absorption device
-
Replacement bevel gear & dowel pin
-
Terminal box
Install Instructions:
Remove the jack cross shaft. If your jack has non-welded hex bushings, refer to Service Bulletin F3310 (included). If you are installing the powered drive on a planetary two speed jack, refer to Service Bulletin F3376 (included). Refer to steps #1 through #5 for instructions on removing the cross shaft. Warning: Failure to follow these warnings and instructions may result in property damage, serious bodily injury, and/or death. ®
- Replace the jack cross shaft temporarily with the powered drive/shaft. Install the shaft such that the powered drive is on the non-geared side of the jack with the motor down and within the profile of the jack (see Fig. 1). For a tandem jack system, the powered drive should be between the two jacks and installed on the “street-side” jack. For the tandem two-speed installation, the grease zerks will no longer be easily accessible. Your option is to drill two ¼” holes on an accessible side of the jack outer tube, and install new grease zerks (not included). Proceed with torque stop tube attachment.
- With the powered drive/shaft temporarily installed, use it to locate the torque stop tube on the jack outer tube wall (see Fig. 1).
- Place the torque stop tube on the rubber bumper (with the powered drive/shaft installed into the jack) and mark the location of the torque stop tube on the outer tube of the jack. Remove the powered drive/shaft and weld the torque stop tube on to the jack outer tube at your marked location (see Fig. 1).
- Replace the powered drive/shaft. Make sure to place the energy-absorbing rubber bumper into the torque stop tube when assembling. This prevents the motor from rotating. Follow instructions of the appropriate Service Bulletin (see above) in reverse order to reassemble the jack. Use the standard hole for normal installation (see Fig. 2; do not use hole #2).
- Attach the powered drive cover using the ¼” x 1” bolts and ¼” rubber bonded washers (included). Sandwich the cover between two rubber bonded washers on each bolt with the rubber side against the cover. Then, screw the bolts into the mounting flange holes. Torque the bolts to 6 ft. lbs. Your option is to apply a thread lock or retaining compound (not included) to the bolts. Place Bulldog decal (included) on outside of cover.
Running Tandem Jacks from the Powered Drive
If you plan to run tandem jacks from the powered drive, you will need to use the hex coupling (included). This coupling can be welded to a length of 1 inch Schedule 40 pipe (see Figure 3). Slide the hex coupling end of the pipe over the hex shaft of the powered drive. Cut the other end of the pipe such that it will just clear the end of the second jack’s cross shaft. Cross drill a ⅜” hole approximately 1 inch from the end of the pipe. Slide the pipe over the second jack’s cross shaft and attach with a ⅜” x 2” long bolt and lock nut, Grade 5 (not included; see Figure 4). Torque to 18 ft. lbs. Make sure the jacks are in the same position in reference to the ground prior to final connection.
Wiring Instructions:
- To avoid accidental shock and/or damage to the electrical system, disconnect the battery ground cable.
- Attach the terminal box to the trailer at a location that will allow for connection of the powered drive leads to the terminal box studs. See wiring diagram (Figure 5).
- Attach the powered drive leads and the wiring harness leads to the terminal box studs. To protect the leads, enclose them in a section of non-split tubing or loom (included).
- Locate and attach the switch box of the wiring harness at a desired location on the trailer (mounting hardware not included).
- Attach the battery leads to the terminal box studs. Attach the terminal box cover.
- Reconnect the battery ground and test the op
-
Wiring harness & switch box
-
Hex coupling (not shown, required when using in a tandem jack application)
-
Weather resistant cover (not shown)
Get Expert Help
Bulldog 2x 12K Jacks Dual Landing Gear & Electric Motor Kit w/ Cross Shaft Pipe Combo Drop Leg w/ Spring Return w/ Side Pin Powered Drive- 26" Lift Install Notes
Installation Instructions for 12,000 lb Square Tube Jack
General Installation Notes:
- Follow these instructions without modifications or alterations.
- Do not position any part of the body under the jack or the load being supported.
- Fully retract and/or rotate the jack before towing.
- Verify the drop leg pin is fully inserted before using the jack.
- Block wheels to prevent rolling during operation.
- Never exceed the maximum rated capacity as indicated on the product markings or decals.
- Avoid excessive side forces that could cause jack failure.
- Replace bent, broken, or worn parts before use.
- Use only on flat surfaces. For tandem applications, align jacks to share the load equally.
- All welding must be performed by an AWS-certified welder.
- Check for interference in all positions, including handle swing and swivel positions, during and after installation.
Tools Required:
- Torque wrench
- Welding equipment (if applicable)
Step-by-Step Instructions:
Direct Mount to Load-Bearing Member:
- Welding must be performed by an AWS-certified welder.
- Apply three 2-inch-long 1/4” fillet welds on both sides of the jack along the contacting surface.
- Space the welds as far apart as possible for maximum load strength.
- For tandem applications, align the jacks carefully to ensure they raise and lower together, sharing the load equally.
Weld-On Pivot Tube Mounting:
- Weld the non-beveled side of the pivot tube to the trailer tongue using a 1/4” fillet weld.
- Align the pivot mount holes vertically.
- Mate the jack to the pivot tube and secure it with the supplied pin.
Drop Leg Operation:
Spring Return Drop Leg:
- Verify the jack is not supporting any load.
- Place your foot on the footplate to control the drop leg's return.
- Rotate the drop leg pin to disengage it and move the leg to the desired position.
- Rotate the pin back to engage it into the adjustment hole and ensure it is fully seated.
- Check for no clearance between the pin handle and the cam slot. If not fully engaged, do not use the jack.
Non-Spring Return Drop Leg:
- Verify the jack is not supporting any load.
- Grasp the footplate handle to control the drop leg's descent.
- Rotate the drop leg pin to disengage it and move the leg to the desired position.
- Rotate the pin back to engage it into the adjustment hole and ensure it is fully seated.
- Check for no clearance between the pin handle and the cam slot. If not fully engaged, do not use the jack.
Maintenance:
- Annually lubricate gears, bushings, and screws with automotive EP2 grease.
- For side-wind models, use a grease gun at lubrication points near the input shaft.
- Apply lightweight oil to input shaft bushings and drop leg pin assembly.
- Keep the drop leg pin and twin cam mechanism clean and lubricated monthly.
Safety Notes:
- Fully retract and rotate the jack before towing.
- Keep clear of pinch points and moving components during operation.
- Never adjust the drop leg while the jack is under load.
Limited Warranty:
- Coverage: 5 years against material defects under normal use.
- Exclusions: Normal wear and tear, misuse, overloading, improper installation, and unauthorized modifications.
- For complete warranty information, refer to the full product manual.
Technical Support:
For technical support or assistance, contact:
- Visit www.trailerjacks.com or call 877-869-6690.
WARNING: Failure to follow these instructions may result in property damage, serious injury, or death.
Installation Instructions for Powered Drive for Jacks
Tools Required:
- Welding equipment (performed by an AWS-certified welder)
- Standard tools for bolts, nuts, and wiring
Safety Instructions:
- Never position any part of the body under the jack or supported load.
- Fully retract and/or rotate the jack before towing.
- Ensure the drop leg pin is fully inserted before using the jack.
- Avoid excessive side forces to prevent jack failure.
- Disconnect the battery ground cable before installation to prevent electrical shock.
- Replace bent, broken, or worn parts before use.
Installation Instructions:
Step 1: Remove the Jack Cross Shaft
- If the jack has non-welded hex bushings, consult the manufacturer's service bulletin for instructions.
- For planetary two-speed jacks, refer to the manufacturer's guidelines or specific service bulletins.
Step 2: Install the Powered Drive
- Temporarily replace the jack cross shaft with the powered drive/shaft assembly.
- Install the shaft on the non-geared side of the jack, ensuring the motor is facing downward and within the jack's profile.
Step 3: Position the Torque Stop Tube
- With the powered drive temporarily installed, use it to locate the torque stop tube on the jack's outer tube.
- Mark the location of the torque stop tube and weld it to the jack's outer tube using AWS-certified welding procedures.
Step 4: Final Assembly
- Reinstall the powered drive/shaft and place the energy-absorbing rubber bumper into the torque stop tube to prevent motor rotation.
- Attach the powered drive cover using 1/4” x 1” bolts and rubber-bonded washers. Torque bolts to 6 ft-lbs.
- Optionally, apply thread lock to the bolts.
Step 5: Tandem Jack Systems
- Use the included hex coupling to connect tandem jacks.
- Weld the coupling to a 1” Schedule 40 pipe and cross-drill a 3/8” hole to secure the second jack's cross shaft with a bolt and locknut.
Wiring Instructions:
- Disconnect the battery ground cable.
- Attach the terminal box to the trailer for connection of powered drive and harness leads.
- Route and secure all leads using non-split tubing or loom.
- Mount the switch box at a convenient location on the trailer.
- Reconnect the battery ground cable and test the powered drive operation.
- Seal all terminal box entrances with sealant to protect the wiring.
Operation:
- Raising the Trailer: Extend the drop leg and fully engage the pin. Press the "RAISE" switch until the trailer is fully lifted.
- Lowering the Trailer: Press the "LOWER" switch until the trailer rests on the ball and the jack is no longer under load.
- In the event of power loss, reset the breaker or manually crank the jack using the powered drive assembly.
Maintenance:
- The powered drive is sealed and maintenance-free.
- Regularly maintain the jack and battery system. Ensure all connections are tight and free of corrosion.
- Fully charge the battery before use.
Limited Warranty:
- 5-Year Limited Warranty: Covers material and workmanship defects under normal use.
- Excludes normal wear, misuse, or improper installation.
Technical Support:
For technical support and assistance, visit www.trailerjacks.com or call 877-869-6690.
WARNING: Failure to follow instructions may result in property damage, serious injury, or death.
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