LITERATURE NUMBER MPD 87984
YOKE STYLE &
FLIP LATCH
9
COUPLERS
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 |
•Installation •Operation •Maintenance
Effective 1/22/08
WELD APPLICATION
1.Coupler must overlap frame 4-7/8˝ minimum (FIG 1-A.)
2.Follow WELDING INSTRUCTION.
3.Weld along top, back and sides specifically under flange where coupler meets the trailer frame (FIG 1-B.)
STRAIGHT TONGUE COUPLERS
SAE/CSA Class 3 Part # 80060, 80082, 80083
WELD ONLY:
FOR YOUR SAFETY READ ALL INSTRUCTIONS
BEFORE INSTALLATION AND OPERATION
Installer: Provide these instructions to the consumer.
Consumer: Read and keep documents available for future reference.
TRAILER & COUPLER CLASSIFICATION
|
TRAILERS WITH A |
TRAILERS WITH A GVWR |
||
|
GVWR OVER |
NOT TO EXCEED |
||
|
(MINIMUM) |
(MAXIMUM) |
||
Class 1 |
|
0 |
2000 lb. |
(910 kg) |
Class 2 |
2000 lb. |
- (910 kg) |
3500 lb. |
(1590 kg) |
Class 3 |
3500 lb. |
- (1590 kg) |
5000 lb. |
(2270 kg) |
Class 4 |
5000 lb. |
- (2270 kg) |
10,000 lb. |
(4540 kg) |
Trailer GROSS VEHICLE WEIGHT RATING (GVWR) = Maximum trailer weight with load
INSTALLATION
CAUTION
HAZARDOUS FUMES
• Adequate ventilation must be provided when welding.
WELDING INSTRUCTION
- Class 2 & 3 coupler-Attach with 1/8˝ fillet weld min. Class 4 coupler-Attach with 5/32˝ fillet weld minimum.
• 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.
CAUTION
PRODUCT DAMAGE
•Coupler latching mechanism must operate freely after welding installation.
•Do not attach ground strap to latch during welding.
STRAIGHT TONGUE COUPLERS
SAE/CSA Class 2 Part # 80051, 80055, 80056
BOLT APPLICATION
1.Coupler must overlap frame 4-7/8˝ minimum (FIG 1-A.)
2.Fasten with two 1/2˝ diameter bolts S.A.E. grade 5 and lock nuts or nuts and lock washers (FIG 1-D) (hardware not included).
3.To prevent collapse of coupler sides during bolt tightening, use spacers (1/2˝ pipe or equivalent) placed between the inside surface of coupler frame (FIG 1-E) (hardware not included).
4.Torque bolts to 74-78 ft. lbs. (dry).
5.Retorque bolts after first two hours of service, then continue to follow maintenance schedule.
1.Front edge of frame must contact internal frame stop on coupler (FIG 2-D.)
2.Coupler must overlap frame (FIG 2-A.)
80082, 80083 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1/16˝ minimum 80060 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-7/8˝ minimum
3.Follow WELDING INSTRUCTION.
4.Weld along top, back and sides specifically under flange where
coupler meets the trailer frame (FIG 2-B.)
80082, 80083 . . . . . . . . . . .5-1/6˝ minimum horizontal weld length 80060 . . . . . . . . . . . . . . . . . . . .4-7/8˝ minimum horizontal weld length
SAE/CSA Class 4 (8500 lbs. cap.) Part # 80131
WELD ONLY:
1.Frame to penetrate coupler 7-5/8˝ minimum (FIG 3-A.)
2.Follow WELDING INSTRUCTION.
3.Weld along top, back and sides specifically under flange where
coupler meets the trailer frame FIG (3-B.)
80131 . . . . . . . . . . . . . . . . . . . .7-5/8˝ minimum horizontal weld length
WELD BETWEEN COUPLERS
SAE/CSA Class 2 Part # 82311, 82315
SAE/CSA Class 3 Part # 80082, 80083
CAUTION
COUPLER OR FRAME DAMAGE
•A bottom support plate must be used with all Atwood Weld Between Couplers.
•Do not attach ground strap to latch during welding.
•Weld completely around bottom plate using WELDING INSTRUCTION.
WELD ONLY:
1.Front edge of frame must butt against side flanges of coupler FIG 4-A. Weld full length both sides as indicated in
FIG 4-B. Weld around coupler and frame as shown.
2.Follow WELDING INSTRUCTION.
3.Bottom rear of coupler and frame must be enclosed by a plate
welded to the frame to prevent flexing of frame and coupler. (FIG 4-E)
A-FRAME COUPLERS
SAE/CSA Class 3 Part # 80072, 80075, 84035, 84176 SAE/CSA Class 4 Part # 80101, 88007, 88555, 88010, 88600
CAUTION
COUPLER OR FRAME DAMAGE
•Atwood Class 3 & 4 couplers are designed for use on 50° A-Frames only.
•A bottom support plate must be used with all Atwood A-Frame couplers (FIG 5/6/7-D.)
•Weld completely around bottom plate follow WELDING INSTRUCTION.
•Do not attach ground strap to latch during welding.
1
WELD ONLY:
1. Measuring along sides, penetration of frame into coupler must be :
Class 3 Couplers: |
7˝ minimum |
FIG 6-A |
Class 4 Couplers: |
8˝ minimum |
FIG 5-A & 7-A |
2.Follow WELDING INSTRUCTION. Weld full length on both sides, from rear of coupler past front edge of frame to inside of coupler under flange (FIG 5/6/7-B.)
SAE/CSA Class 3 Part No. 80073
BOLT APPLICATION ONLY
1.Coupler must overlap frame 7˝ minimum (FIG 8-A.)
2.Bottom rear of coupler and frame must be enclosed by a plate (MPD #87286) bolted to the frame to prevent flexing of frame and coupler (FIG 8-D.)
3.Fasten with four (4) 1/2˝ diameter bolts S.A.E. grade 5 and lock nuts with flatwashers, or nuts and lock washers with flatwashers
(FIG 8-E) (not supplied).
4.To prevent collapse of frame during bolt tightening, use spacers (1/2˝ tubing or equivalent) placed between the inside surface of coupler frame (FIG 8-F) (not supplied).
5.Torque bolts to 74-78 ft. lbs. (dry).
6.Retorque bolts after first two hours of service, then continue to follow maintenance schedule.
OPERATION
WARNING PERSONAL INJURY
•Safe towing practice requires the proper use of safety chains used in accordance with instructions provided by the trailer manufacturer.
•BEFORE TOWING: The ball must be completely inserted into the coupler ball socket. The ball clamp (inside the coupler) must be closed around the underside of the tow ball. The handle must be in the closed position.
•The loaded weight of the trailer must never exceed the maximum capacity marked for each component (coupler, tow ball, hitch) of the 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.
WARNING
PERSONAL INJURY
•For proper tow vehicle and trailer hookup, towing performance and to prevent damage to hitch and trailer coupling, the tow vehicle and trailer are to be level with respect to flat ground after hitching up. If your trailer is not level, equipment is available to raise or lower the hitch ball.
CAUTION
PRODUCT DAMAGE
•Use caution when backing or towing vehicle for hook-up, damage to coupler may result.
•Avoid sharp turns when towing or backing. Jack-knifing could bend coupler or create extreme stress or fracture.
LATCHING INSTRUCTIONS
WARNING
PERSONAL INJURY
• Always open latch handle before inserting ball.
YOKE STYLE COUPLERS
PART # 70643, 80051, 80055, 80060, 80072, 80073, 80075, 80082, 80101, 82311, 82315, 84035, 84176
1.To open, lift the latch and pull backward, raising the yoke and resting it on the nose of the coupler (FIG 9-A.)
2.Place coupler on ball of same diameter as coupler and of same or greater capacity.
3.When ball is completely nested in ball socket, push latch handle forward until yoke drops over nose of coupler and the latch handle locking tips freely enter slots on top of coupler (FIG 9-B.)
4.Extend jack to ground and lift car/trailer combination 2˝-4˝ to insure coupler is securely attached to tow ball. Retract jack completely before towing.
Note: These are non-locking couplers.
Note: These couplers are not adjustable for ball size.
FLIP LATCH COUPLERS
PART # 88555, 88600 |
8,000 lb. Capacity |
PART # 88007, 88010 |
10,000 lb. Capacity |
1.To open, slide forward and pull up open latch before inserting ball (FIG 10-A.)
2.Place coupler on ball of same diameter as coupler ball socket size and of same or greater capacity than trailer GVW.
88555/88600 ............ |
2˝ |
88007/88010 ............ |
2-5/16˝ |
3.When ball is completely nested in socket, push top of latch handle rearward until handle snaps into closed position.(FIG 10-B.)
4.Extend jack to ground and lift car/trailer combination 2˝-4˝ to insure coupler is securely attached to tow ball. Retract jack completely before towing.
5.Insert padlock through hole in handle (FIG 7-C) .
Note: These couplers are not adjustable for ball size.
STRAIGHT TONGUE COUPLERS
PART # 80131
1.Insert finger in latch hole. Pull out and up on latch (FIG 11-A.) Rotate latch 90° from original position. (FIG 11-B.)
2.Place coupler on 2-5/16˝ ball of same or greater capacity than trailer GVW.
3.When ball is completely nested in ball socket, push forward on latch (FIG 11-B.) Be sure that the nib (FIG 11-A1) on the latch is secured in slot (FIG 11-A2.)
4.Extend jack to ground and lift car/trailer combination 2˝-4˝ to insure coupler is securely attached to tow ball. Retract jack completely before towing.
5.Insert padlock or bolt through lock hole (FIG 3-C) in latch.
Note: These couplers are not adjustable for ball size.
MAINTENANCE
1.Lubricate ball socket and ball clamp with wheel bearing grease. Clean and lubricate monthly.
2.Check towing hitch, ball and coupler for signs of wear before each trip. Replace coupler if damaged or worn.
3.Lubricate moving or sliding parts monthly with S.A.E. 30 weight oil.
4.Should problems or questions arise, contact your dealer, the trailer manufacturer or Atwood Service Department 574-264-2131.
5.For Warranty information contact Atwood before having any work done 574-264-2131.
FIG 1-11 are located following page
A = minimum/maximum coupler/tongue overlap B = weld areas (XXXXXXXXXX)
C = lock hole
2
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