Intermittent noise

[noles0121]

Hello everyone,

we have a 1985 M923 that sometimes when you hit a bump a loud not quite grinding but more than a humming noise comes from the front end. The noise always goes away when I turn the wheel to the left. You can feel it through the floor, in the breaks and slightly in the steering wheel. Any help would be greatly appreciated.

Jesse

 

[simp5782]

Hello everyone,

we have a 1985 M923 that sometimes when you hit a bump a loud not quite grinding but more than a humming noise comes from the front end. The noise always goes away when I turn the wheel to the left. You can feel it through the floor, in the breaks and slightly in the steering wheel. Any help would be greatly appreciated.

Jesse

Could be a number of things with the "sometimes" category.


Cab mounts are too tight or worn out. Should be able to spin the bushings by hand.

You can use a infrared gun to check bearing Temps, front u joint Temps after driving to see if the Temps vary from side to side.