David Brown 990, two-stage clutch?

[ScottNC]

An acquaintance bought a very used 990. On the surface, it does not appear to have a two-stage clutch. While doing a walk-around with the new owner he asked if the 990's had a two-stage clutch. Told him I thought it should have one, but by feel of the clutch pedal it does not appear to??

 

[ScottNC]

After reading just about every online tractor spec web site with info on the 990 . . . not a single one mentions anything about the clutch other than it is a "dry disk". Playing the wording game searching for a blog or YouTube I found The Man From The Mist YouTube video where the parts for a 990 clutch replacement are laid out prior to installation. Two disks and an intermediate plate - a two stage. So it was available with two-stage but I still don't know if they were so equipped.

 

[Jim.ME]

A 990 parts books I found online shows a "clutch pit cover" under the clutch area. If it is there. open it and look inside is the best way to tell.

 

[ScottNC]

Never thought about that, thanks! I should have remembered, my 885 has one, or a version of it.

 

[RGMartin]

"990A" is a 2 stage. "990B" is single disk. Look at your serial number.

 

[ScottNC]

I will pass that info along to the owner. I looked for the serial number when asked he what clutch it should have - but it was under about an inch of forty year old oily muck that I wasn't about to carve on with my pocket knife.

 

[RGMartin]

of course you did