74 Hough H90E

[zlssefi]

Im stumped here guys...I have a hough h-90E payloader which we use for snowplowing. When pushing a heavy load with the pusher we get a recurring noise which sounds like its coming from the front end of the machine. The noise almost seems like a small thud, very mild every time the wheel goes around. It will not make the noise when you are just driving, or backing up or even moving a small load of snow. I took the planetary cover off and what i could see looked like brand new. The oil had no shavings or even metallic color to it, and the magnet had only a small film of very small particles...im not the greatest mechanic out there, but i can fix something if i know where the problem is...any of you guys had this problem before???

thanks in advance!!

 

[mikey531]

have you tried pushing with just the bucket and see if makes the same noise? Maybe have someone walk beside the machine and see if they can pinpoint the noise.

 

[zlssefi]

noise

We havent checked from outside the machine yet for the noise. I do know that we were loading tri-axles with snow maybe a month ago, and the operator whos has tons of experience in that particular machine said he heard nothing out of the ordinary. were gonna look further into it asap. it sounds too slow to be a driveshaft noise, but i could be wrong...

 

[John C.]

You might look at the center joint. The bearings sometime get some up and down slop and when you load up the bucket by pushing or picking up a load it slams up or down as the case warrants.

Sometimes you can see it from the seat by traveling if forward and shifting the transmission into the next higher gear. You will see the back of the machine pop up or down.

Good Luck!

 

[30 dirty years]

The first thing I always check are the lug nuts.

 

[aongheas.macask]

Try pulling the plug from front diff and see if any contaminaton,the crap might not get thru to planetaries depending on drive shaft set-up

 

[zlssefi]

The front differential was just drained and cleaned out with no water, dirt or metal contamination found. As far as bearing slop are you talking about the driveshaft or the " transfer drive box"? Its a small gear box which has two tapered roller bearings inside, it was rebuilt about 200 hours ago and has been super tight ever since. The machine also had a new lower center pin installed maybe 500 hours ago.... I will check lug nuts today, any idea what tourque should be?

 

[30 dirty years]

If they are loose it ? You may need a new wheel because they keep coming loose again, I am not sure on the tourque ,I put a 3/4 snap on ratchet on them and stand on it

 

[John C.]

Replacing a lower center pin tells me you got troubles. The bearings also needs to be replaced at the same time and if the lower is shot the upper also has a problem.

 

[zlssefi]

which bearings are you saying need replaced?

 

[John C.]

One frame has the top and bottom pin bosses and the other has the center boss with a bushing inside it. The top joint on the hitch has as I recall upper and lower tapered roller roller bearings that are shimmed up or down to center the frame halves in the joint. There should be no movement back and forth or up and down when picking up or pressing down with the bucket.

 

[zlssefi]

i gotcha, ill take her out today and try pushing into piles and pressing down with the bucket to see if there is any movement there...

 

[Bayou Cat]

H90e

I have an H90E if you are anyone you know is looking for one.