Yes, I imagine that would be quite a shock to a couple of aerospace retirees.
It would be best to use TDTO T4 spec oil in the main clutch instead of engine oil unless matching original 30wt. They claim modern engine oil is to slick for clutch application.

"Old wrote:

Yes, I imagine that would be quite a shock to a couple of aerospace retirees.
It would be best to use TDTO T4 spec oil in the main clutch instead of engine oil unless matching original 30wt. They claim modern engine oil is to slick for clutch application.

can i source that oil at tractor supply or a co op ?
been looking online but not finding what i need

im going to try to find the serial on this machine this afternoon

Check the chart under "Off Road Trans. Fluid".
crs.coopconnection.ca/files/SpringOilChart.pdf

"Old wrote:

Usual location, upper LH corner rear of the steering clutch housing and left rear of the engine about behind the magneto.

hey OM i finally found the serial number on this tractor

20A145

also any info on the oil level in the clutch housing

i think i read that finals are about 10 gal and transmission is about 10 gal
thanks

charlie

Hi Team,
here are the capacities from my 20A grey OMI book Form No31849-5, dated 08/61.

Also be sure to clean the breathers on all compartments so equipped.
Cheers,
Eddie B.

"edb" wrote:

Hi Team,
here are the capacities from my 20A grey OMI book Form No31849-5, dated 08/61.

Also be sure to clean the breathers on all compartments so equipped.
Cheers,
Eddie B.

Thank you so much!!

having some issues with the main clutch

it snaps in nice but after it warms up a bit maybe 20 min
its not pulling good still moves but takes off slow
do you think it could be low on oil or do you think it needs a clutch adjustment ?

i want to get this loader working for this summer

thanks all comments welcome

charlie

You should check both!!!

"Old wrote:

You should check both!!!

hey Old Magnet i was hoping you would chime in

could you come up with a year this tractor was made and engine size d333 or d330 and any other info that may be useful

from the serial of

20A145


im going to check both on the clutch. i haven't moved it since i found out it was slipping
been busy on the farm


thanks
charlie

Hi Team,
scans below should help. Yes, they are for a U series D6--the 977 is basically a D6 with bucket frame attached.
It will have D6 undercarriage as fitment of the upgraded D7 undercarriage came in at S/No 20A2509 and up.

The 977 20A was released in 1955--coincidentally Cat do not use year built dates to order parts etc. They use strictly Serial Numbers--as evidenced by the undercarriage upgrade at 20A 2509 up.
As an example only, if you ordered 20A undercarriage parts, without giving a S/No, you could get the wrong parts.

Master Clutch Oil level dipstick/filler are at right rear engine mount.
M/C is a mechanical clutch running in oil so does not use oil pressure to operate the clutch.
Oil pump in there is for lubrication/cooling only--check pump suction screen at lower rear clutch housing area for debris etc. when you are changing the oil.
Be very careful tensioning up the lock nuts on the flywheel clutch locks as all components are soft iron--not high tensile hardware and so threads are easily to strip or snap the stud--major work to rectify snapped stud--stud can/maybe be re-threaded to a smaller size in-situ but is not easy.

You should also check the steering clutch linkage free play.
As with mechanical auto/truck clutches, as the steering clutches wear the linkage free play is used up and so must be adjusted back into the linkage system or the clutches can/will slip when loaded.

Hope this helps.
Cheers,
Eddie B.