How To Couple and Uncouple a Bulldog Style Trailer Coupler

Published 06/27/2019

Question:

First time hooking up with this type of coupler? So, how do I ensure it is engaged correctly? While on the ball I can close the jaws and slide the collar forward. Then the pin. Is that it. I have had the other type of hitch with the wedge arrangement come loose.

asked by: Dave K

Expert Reply:

I have attached for you a photo that shows the proper sequence to couple and uncouple a Bulldog Collar-Lok Coupler like the part # BD028386. To summarize, see below:

To Couple:
1) Block trailer wheels.
2) Align hitch ball beneath coupler.
3) If the coupler is closed, open it by removing the pin in the latch and lifting the latch. Be sure the coupler cap is open and holds the collar back.
4) Lower the trailer onto the hitch ball.
5) Visually check that the hitch ball is fully seated in the coupler.
6) After the hitch ball is seated in the coupler, carefully close the coupler cap and lower the latch. Be sure the collar springs toward the ball pocket and captures the coupler cap.
7) Reinsert the pin in the latch. Do not tow without pin in place.
8) Always secure safety chains to vehicle before towing according to SAE J684

To Uncouple:
1) Block trailer wheels.
2) Open the coupler by removing the pin behind the collar and sliding the collar away from the ball pocket. Be sure the coupler cap is open and holds the collar back.
3) Raise the trailer from the hitch ball.