After completing 50 hours of use, I did the first preventive maintenance on my Murray 18.5 HP... (change of oil, filter, grease, valve gap readjustment, blade sharpening, inspection of several other items, etc.. .).
I spent some time analyzing my cutting deck, since I bought it (it's used, I'm the 3rd owner), it has three problems:
1 - difficulty adjusting the height.
2 - strong oscillation of the belt tension pulley.
3 - belt tension variation according to height level.
I have already identified other problems before and solved or alleviated them... this deck appears to be of a different age than the rest, as its condition is very good for the age of the tractor (2010) and also considering normal wear parts such as screws and holes in parts that move on the support (links, arms, etc...).
Another detail is the large amount of differences between the parts list manual and the reality of the deck... in short, it looks like an adapted deck... and poorly adapted... but it's what I have and I'll try to put it in the best possible way, with your help.
What has already been done for 1:
Regarding the height adjustment, I identified that the suspension arms, despite having the same number stamped (195186 - Husqvarna), have different lengths, which made the deck twist according to the selected level.
Solution: I created another support point on the deck and matched the arms to the smaller one, in addition to changing the connection point of the Link Lift Susp Mower Rear (91 in the diagram) to match the right side (only then were they aligned).
I cut the Link Asm Lift FXD (101), welded a long screw and made a piece similar to 91... getting the same height adjustment condition.
Now bring it down without twisting.
As for items 2 and 3, I have already tried several configurations and could not resolve them, as they are combined, that is, at level 1, the blades take a long time to turn and it is perceived that they do not have speed, but the tensioner pulley does not oscillate... As the deck level increases, the belt stretches, starts and increases oscillation.
I'm already thinking of a drastic solution, which is to put a coupling cable (which is fixed on my deck) like a bicycle brake adjustment...
I researched many decks on the internet and the one that comes closest is what appears in the following video... including the entry for the blade coupling cable... however the support arms are different...
I spent some time analyzing my cutting deck, since I bought it (it's used, I'm the 3rd owner), it has three problems:
1 - difficulty adjusting the height.
2 - strong oscillation of the belt tension pulley.
3 - belt tension variation according to height level.
I have already identified other problems before and solved or alleviated them... this deck appears to be of a different age than the rest, as its condition is very good for the age of the tractor (2010) and also considering normal wear parts such as screws and holes in parts that move on the support (links, arms, etc...).
Another detail is the large amount of differences between the parts list manual and the reality of the deck... in short, it looks like an adapted deck... and poorly adapted... but it's what I have and I'll try to put it in the best possible way, with your help.
What has already been done for 1:
Regarding the height adjustment, I identified that the suspension arms, despite having the same number stamped (195186 - Husqvarna), have different lengths, which made the deck twist according to the selected level.
Solution: I created another support point on the deck and matched the arms to the smaller one, in addition to changing the connection point of the Link Lift Susp Mower Rear (91 in the diagram) to match the right side (only then were they aligned).
I cut the Link Asm Lift FXD (101), welded a long screw and made a piece similar to 91... getting the same height adjustment condition.
Now bring it down without twisting.
As for items 2 and 3, I have already tried several configurations and could not resolve them, as they are combined, that is, at level 1, the blades take a long time to turn and it is perceived that they do not have speed, but the tensioner pulley does not oscillate... As the deck level increases, the belt stretches, starts and increases oscillation.
I'm already thinking of a drastic solution, which is to put a coupling cable (which is fixed on my deck) like a bicycle brake adjustment...
I researched many decks on the internet and the one that comes closest is what appears in the following video... including the entry for the blade coupling cable... however the support arms are different...
