LITERATURE NUMBER MPD 75026
GOOSENECK COUPLERS
9
ENGLISH, FRANÇAIS (et Canada)
SAFETY ALERT SYMBOLS
Safety Symbols alerting you to potential personal safety hazards. Obey all safety messages following these symbols.
WARNING |
CAUTION |
avoid possible |
avoid possible |
injury or death |
injury and/or property damage |
FOR YOUR SAFETY READ ALL INSTRUCTIONS
BEFORE INSTALLATION AND OPERATION
Installer: Provide these instructions to the consumer. Consumer: Keep documents for future reference.
The Atwood Gooseneck Coupler or Gooseneck Coupler and Stem is a ball type coupler designed to be used on trailers that are towed by vehicles having the ball mounted above and forward of the rear axle.
•Installation •Operation •Maintenance
Effective 11/21/07
DROP TUBE AND SCREW ADJUSTABLE STEM APPLICATIONS -
1.Weld the outer tube to the trailer frame and gusset the tube with side plates of sufficient capacity for the trailer GVRW and design.
2.Weld the top and bottom of the side plates. Weld both sides of the plates 4-A.
3.Weld the top and bottom areas where the trailer frame meets the gooseneck stem. 4-B
4.Weld the entire length of the side plates where they meet the trailer frame. Weld both sides. 4-C
5.Dimensional limits for gooseneck attachment:
3-C 3/8˝ thick side plates |
3-D 3/4˝ |
3-E 24-3/16˝ |
3-F 8˝ minimum |
3-H 3-1/2˝ maximum |
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3-G 2-1/16˝ minimum to 12-1/16˝ maximum |
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6. Check all welds for correct size, penetration and location.
OPERATION
Identify Gooseneck Coupler and follow correct installation and maintenance instructions for that part number.
INSTALLATION
CAUTION
HAZARDOUS FUMES
• adequate ventilation must be provided when welding.
WELDING INSTRUCTIONS
• M.I.G. OR STICK - Make 5/16˝ fillet welds minimum. Use No. E6011 AWS welding rod, 5/16” diameter. Machine amps (AC or DCRP) 2 160-180 amps with 50 volts.
• M.I.G. WELDING - Use A.W.S. ER 70S-3 or 6 wire or equivalent with a diameter of .035 - .045. The recommended shielding gas mixture is 75% - 95% Argon & 25% - 5% CO2.
• STICK WELDING - Use E6011 A.W.S. welding rod or equivalent with a diameter are as follows: 1/8˝ electrode set power between 115-130 Amps DC or 5/32˝ electrode set power between 140-160 Amps DC.
MPD 75025 GOOSENECK COUPLER |
25,000 LB. CAP. |
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Max. Gross Vehicle Weight: |
25,000 lbs. |
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Ball Size: |
2-5/16˝ diameter |
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Vertical Load Capacity: |
5,000 lbs. |
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This gooseneck coupler must be installed ONLY by welding to the gooseneck tube of gooseneck type trailers.
1.Center ball cup 1-A inside the end of gooseneck tube 1-B. Line up the guide 1-C ramp toward forward end of trailer.
2.Attach coupler to gooseneck tube by welding all around where tube base meets coupler. Use 5/16˝ fillet weld No. E6011 AWS welding rod 5/16˝ diameter. Machine amps (AC or DCRP) @ 160-180 with 50 volts.
3.See Coupling and Uncoupling Procedures and Maintenance.
GOOSENECK COUPLER WITH STEM
DROP TUBE STEM WITH COUPLER |
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MPD 75401 |
SCREW ADJUSTABLE STEM WITH COUPLER |
MPD 75004 |
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Max. Gross Vehicle Weight: |
25,000 lbs. |
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Ball Size: |
2-5/16˝ diameter |
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Vertical Load Capacity: |
5,000 lbs. |
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WARNING
PERSONAL INJURY / PRODUCT DAMAGE
•Safe towing practice requires the proper use of safety chains used in accordance with instructions provided by the trailer manufacturer.
•Use only a 2-5/16˝ diameter hitch ball with the correct towing weight capacity.
•Check that the ball has been completely inserted into the coupler ball socket and the ball clamp (inside the coupler) is closed around the underside of the tow ball and the latch is in the closed position.
•The loaded weight of the trailer must never exceed the minimum capacity marked on the coupler, tow ball, hitch, trailer or vehicle.
•Check coupler, hitch and ball for damage or wear before each use. Assure all parts operate freely. Replace any component if worn or damaged.
•Failure to follow warnings and instructions could result in separation of tow vehicle and trailer which can result in death, personal injury and property damage.
•Use caution when backing or towing vehicle for hook-up, damage to coupler may result.
DROP-TUBE STEM & COUPLER |
MPD 75401 |
1.Put the drop-tube stem in the proper position before connecting it to the hitch ball in the pick-up bed. This will allow level towing of the trailer. Adjustments can be every 2˝, up to 10˝ maximum 4-D.
2.Adjust the stem so your truck/trailer combination is in a correct level towing position. When adjusting the stem all weight must be off the gooseneck stem and coupler. Use the trailer jacks to raise the coupler off the hitch ball above the truck bed before removing the 1˝ diameter bolt from the stem. Raise or lower the stem as needed. Replace the bolt and nut. Tighten to 100 ft./lbs. torque.
3.See Coupling and Uncoupling Procedures and Maintenance.
SCREW ADJUSTABLE STEM & COUPLER |
MPD 75004 |
1.The adjustable screw stem is adjustable over a 10˝ length 3-G. This stem can level the trailer before or after hook-up is made to the hitch ball in the pick-up bed.
2.To raise the trailer, lift the adjustable stem handle 3-B and turn it counterclockwise .
3.To lower the trailer, lift the adjustable stem handle 3-B and turn it clockwise .
4.See Coupling and Uncoupling Procedures and Maintenance.
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