atwood Gooseneck Couplers User Manual
LITERATURE NUMBER MPD 75026
GOOSENECK COUPLERS
9
ENGLISH, FRANÇAIS (et Canada) •Installation •Operation •Maintenance
Effective 11/21/07
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.
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% CO
• 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.
2
.
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
3-G 2-1/16˝ minimum to 12-1/16˝ maximum
6. Check all welds for correct size, penetration and location.
OPERATION
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.
MPD 75025 GOOSENECK COUPLER 25,000 LB. CAP.
Max. Gross Vehicle Weight: 25,000 lbs.
Vertical Load Capacity: 5,000 lbs.
This gooseneck coupler must be installed ONL
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.
Ball Size: 2-5/16˝ diameter
Y by welding to the
GOOSENECK COUPLER WITH STEM
DROP TUBE STEM WITH COUPLER MPD 75401
SCREW ADJUSTABLE STEM WITH COUPLER MPD 75004
Max. Gross Vehicle Weight: 25,000 lbs.
Ball Size: 2-5/16˝ diameter
Vertical Load Capacity: 5,000 lbs.
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 哷.
3. To lower the trailer, lift the adjustable stem handle 3-B and turn it
clockwise 哶.
4. See Coupling and Uncoupling Procedures and Maintenance.
1
COUPLING PROCEDURE MPD 75401 & 75004
1. On level ground place wheel chocks in front and behind wheels,
both sides of the trailer (4 chocks).
FIG 1 shows coupler handle in a latched position. To open, rotate
2.
FIG 2-D counterclockwise a sufficient amount to allow handle
handle
tab FIG 1-E to clear rivet tab FIG 1-F, then pull handle away from coupler and position handle tab under rivet on outside of rivet tab as in
FIG 2.
3. Adjust trailer jacks until coupler is at level height or slightly lower
(by 1˝) than top of hitch ball.
4. Lower tailgate of truck.
5. Back truck slowly toward trailer until coupler drops into place over
the ball. Check to see that the ball has entered the ball cup of the
gooseneck coupler.
6. Coupler will not completely lock into place until trailer jacks are retracted.
7. Connect power line, breakaway switch line and safety chains
between truck and trailer (see trailer manufacturer’s instructions).
8. Retract trailer jacks.
9. Check to make sure that the handle is in latched position. Place
lock pin
FIG 2-G in holes of tabs FIG 2-H, pinning the handle in
place.
10. Close and latch tailgate. Check all lights - stop, turn, tail, and
brake lights for proper operation.
11. As an additional check before towing, extend jacks until truck is
raised 3 to 4˝ to verify that coupler is securely attached to ball.
12. Completely retract trailer jacks.
13. Pick up and store wheel chocks.
UNCOUPLING PROCEDURE MPD 75401 & 75004
1. On level ground place wheel chocks in front and behind wheels,
both sides of the trailer (4 chocks).
2. Lower trailer jacks. If on soft ground, place a support under the jack
feet to prevent trailer from settling.
3. Lower tailgate on truck.
4. Remove the lock pin
Pull handle
FIG 2-E under rivet on rivet tabs FIG 2-I.
FIG 2-D away from coupler and position the handle tab
FIG 2-G and rotate handle counterclockwise.
5. Raise trailer until jacks lift coupler completely above the top of ball.
6. Disconnect power line, breakaway switch line and safety chains
between truck and trailer.
7. Drive truck slowly away from under trailer.
MAINTENANCE
WARNING
PERSONAL INJURY / PROPERTY DAMAGE
• Replace worn or damaged parts.
• Do not tow trailer with worn or damaged parts.
GOOSENECK COUPLER MPD 75025
1. Monthly, clean ball cup and clamp, lubricate with wheel bearing grease.
2. Monthly, apply SAE 30 oil at points where the handle rotates at
sides of coupler.
3. Check ball and coupler before each trip for wear.
DROP-TUBE STEM & COUPLER MPD 75401
1. Before each use check torque on the 1˝ diameter bolt 4-E, it should
be 100 ft/lbs.
SCREW ADJUSTABLE STEM & COUPLER MPD 75004
1. On level ground place wheel chocks in front and behind wheels,
both sides of the trailer (4 chocks). Disconnect the coupler from the
hitch ball.
2. To lubricate the adjustable stem, extend the coupler as far as possible, and squirt SAE 30 oil into the top of the stem where the screw
extends out of the top.
3. After oiling, completely retract the stem, and reposition it as
described in Operation Instructions.
For problems or questions, contact your dealer, the trailer mfg., or
Atwood’s Consumer Service Department 574-264-2131.
Atwood Hardware Systems & Components Limited Warranty
For warranty information contact Atwood (574-264-2131) before having any work
done. Atwood Mobile Products warrants to the original purchaser that this product will
be free of defects in material and workmanship for a period of 2 years from the date of
purchase. Atwood’s liability hereunder is limited to the replacement of the product,
repair of the product, or replacement of the product with a reconditioned product at the
discretion of the manufacturer. The warranty is void if the product has been damaged
by accident, unreasonable use, neglect, tampering or other causes not arising from
defects in material workmanship. The warranty extends to the original consumer purchaser of the product only, and is subject to the following conditions:
1. For two (2) years from the original date of purchase, Atwood will replace or repair or
replace with conditioned product, at Atwood’s discretion, product found to be defective in material or workmanship. Weights on each individual leg are required to
process the warranty request.
2. In the event of a warranty claim, the Original Owner must contact the
Atwood Consumer Service Department, 1120 North Main St., Elkhart, IN
46514, Telephone: 574-264-2131 Fax: 574-206-9713. Warranty claim
service must be performed as approved by the Atwood Consumer
Service Department. Warranty replacement hardware systems and com-
ponents or parts will be furnished freight prepaid. Labor cost to repair or
replace will be limited to the amount of the original purchase price of the
systems and components. The replaced warranty products or parts
become the property of Atwood Mobile Products and must be returned to
the Atwood Consumer Service Department freight prepaid, unless prior
arrangements have been agreed to.
3. This limited warranty is valid only when the product is applied, installed,
maintained and operated in accordance with this Atwood Installation,
Maintenance and Operating Manual. Any deviation from these recommended specifications must be approved in writing by Atwood.
4. Any implied warranties are limited to the duration of this limited warranty
as stated above. Atwood does not assume responsibility for consequential damage or loss, including loss of use of vehicle, loss of time, inconvenience, expense for gasoline, telephone, travel, lodging, loss or damage
to personal properties, or loss of revenues. Some states do not allow limitations on how long an implied warranty lasts or limitations on consequential damages, so the above limitations may not apply to you. This
limited warranty gives you specific legal rights which may vary from state
to state.
2
Loading...