A friend of mine has been fighting a problem with his low gear slipping out when he's underload or just coming off a load. He has already replaced he shifting control and the pin that is meant to hold it in gear. This last week he said that it felt like it wanted to fall out again when he was pushing a large amount of snow. Any idea what his problem could be?

P.S. Later on (9/10pm) I will post a video that shows this problem occuring.

 

Look for the grinding at about 2:49 secs

Tell me what you think,

Thank you.