GR2120 Front Axle Pivot Adjustment?

[MILESKellogs]

Can someone shed some light on what's involved to adjust the front axle pivot on a GR 2120? It's at 400 hours so it's due. I haven't gotten around to buying a service manual yet
I've noticed recently the axle housing has some markings from hitting the frame and am hoping this is the cause ?
TIA
Miles

 

[MILESKellogs]

Wanted to report back that I Bought a downloadable manual online, from https://www.lawntractorco.com

Seems to be a pretty straightforward adjustment. Wanted to pass the info alonng on the above site as the last place iI bought an online manual from was a bit of a ripoff as it had been copied so many times the pictures were illegible. this one was Quite nice with some color pic's and diagrams as well

 

[MILESKellogs]

By the way the adjustment is nothing more than adding or subtracting shims to the 2 lowest bolts on the mount that have long spacers as well. Mine was at the outer limit of the spec and rather than make thinner shims I took .045" off each of the spacers with a lathe. can't recall the measurement's now but will post back at a later time.

 

[Dave_eng]

I believe the pivot adjustment's purpose is to keep the front axle vertical and prevent it from rocking back and forth. I do not mean rocking side to side but along the axis to the tractor from front to rear.

The axle pivots to keep all 4 wheels in contact with the ground and if the ground is uneven the axle will pivot until it is mechanically stopped. This is not a problem but as designed.

Thank you for the report on the quality of manual supplier. All too often you end up with useless pages someone photo copied.

Dave

 

[MILESKellogs]

"The axle pivots to keep all 4 wheels in contact with the ground and if the ground is uneven the axle will pivot until it is mechanically stopped. This is not a problem but as designed."

Being a retired engineer, I'll admit I machined a couple of rubber bump stops for the front axle and attached them to the frame. I'm sometimes a bit too anal LOL

 

[lugbolt]

yes if the axle is allowed to move, the change results in a change in caster-and in the case of the GR series, also a change in the front propshaft angle. Obviously it'll also move side to side a little which affects steering as well. IOW, harder to mow a straight line.

the axle pivot is a wear item, but I can't remember, does it have a grease fitting? If not it should.

 

[MILESKellogs]

Sorry for the delayed reply but yes it does have TWO grease zerks, one on the front and one on the back of the pivot, both blocked with factory paint . Removing them and a kwik pass with a wire wheel took care of that issue.