Search found 24 matches

by gwatts
Mon May 06, 2019 2:27 am
Forum: DBTC Forum
Topic: Anyone replaced/simplified Selectamatic hydraulics?
Replies: 62
Views: 11682

Re: Anyone replaced/simplified Selectamatic hydraulics?

I finally finished this modification today. I wish I had done it long ago. With the old system my tractor couldn't lift my 6 foot thrasher off the ground. Now it lifts quickly all the way up to the travel lock position. It also holds position very well. Once again ollek and cossyrec show us that the...
by gwatts
Thu May 02, 2019 2:20 am
Forum: DBTC Forum
Topic: Anyone replaced/simplified Selectamatic hydraulics?
Replies: 62
Views: 11682

Re: Anyone replaced/simplified Selectamatic hydraulics?

Thanks ollek, I've looked at the spacer under my Cessna valve and don't find the plug you referenced but I understand what we're trying to accomplish here. I made a "power beyond" plate and installed it above the Cessna valve to power other hydraulic systems. I would imagine that I can just "tee" in...
by gwatts
Sun Apr 28, 2019 8:11 pm
Forum: DBTC Forum
Topic: Anyone replaced/simplified Selectamatic hydraulics?
Replies: 62
Views: 11682

Re: Anyone replaced/simplified Selectamatic hydraulics?

I've followed this thread with a lot of interest. I've had similar issues with the selectamatic chest valve and I've finally decided to bypass the chest valve and operate the three point arms with the Cessna valve as ollek explained above. My 990 has a bypass filter housing in the location that was ...
by gwatts
Thu Jan 31, 2019 2:24 am
Forum: DBTC Forum
Topic: New to the forum with a 780.
Replies: 4
Views: 479

Re: New to the forum with a 780.

Good luck with the project. They can be trying and rewarding all at the same time. I've got a 990 and a 1210 that keep me scratching my head. But they outpull any modern tractor of the same horsepower. They were well ahead of their time. My 1210 was built in 1974 and still plowed 25 acres of ground ...
by gwatts
Sun Jan 13, 2019 2:57 am
Forum: DBTC Forum
Topic: slasher mower
Replies: 3
Views: 405

Re: slasher mower

I've not seen mowers rated by HP. I'm turning a 6 foot mower here with my 990 and it does fine. In deep grass ( 3 foot or more tall) I have to use low gears. I wouldn't recommend more than 6 foot.
by gwatts
Thu Jan 10, 2019 4:28 pm
Forum: DBTC Forum
Topic: 900 front axle surprise
Replies: 20
Views: 1736

Re: 900 front axle surprise

Really nice machine work! No one would believe you if you told them how much time is spent building fixtures to hold the work piece! I always enjoy seeing others machine shops. Very nice
by gwatts
Tue Dec 25, 2018 9:43 pm
Forum: DBTC Forum
Topic: Power Assist Steering turns right not left
Replies: 2
Views: 394

Re: Power Assist Steering turns right not left

Thanks ollek,

That's exactly what I needed. Much appreciated.
by gwatts
Tue Dec 25, 2018 2:06 am
Forum: DBTC Forum
Topic: Power Assist Steering turns right not left
Replies: 2
Views: 394

Power Assist Steering turns right not left

I found a PAS cylinder in a local salvage yard and installed it today on my DB990. Other than the water that must have been present and took me all afternoon to clear out, the only problem is it steers to the right but not to the left. I've looked around and haven't been able to find an exploded vie...
by gwatts
Sun Dec 16, 2018 3:52 am
Forum: DBTC Forum
Topic: 1394 3 point hitch, no height control
Replies: 12
Views: 956

Re: 1394 3 point hitch, no height control

In several places I've seen the same technic for diagnosing a leaking hydraulic system. If your tractor has a 3-way valve, lift the hitch with a load attached and shut off the engine. Then move the 3-way valve operating lever to position 1 or 2. The lift will drop if the lift cylinder is leaking. Ho...
by gwatts
Fri Dec 14, 2018 2:50 pm
Forum: DBTC Forum
Topic: By-pass Valve 990
Replies: 2
Views: 404

Re: By-pass Valve 990

Ollek,
Mine is an early version with the straight grooves in the valve not inclined. Thanks for clearing this up for me.
by gwatts
Fri Dec 14, 2018 12:28 pm
Forum: DBTC Forum
Topic: By-pass Valve 990
Replies: 2
Views: 404

By-pass Valve 990

In the process of cleaning the Hold Valve and By-pass valves on my DB990 I found that the steel ball in the By-pass valve was badly deformed. I also found the steel ball "retainer", # 11 in the parts manual is missing. https://partstore.caseih.com/us/parts-search.html#epc::mr53666ar1289784bi3447255-...
by gwatts
Thu Dec 13, 2018 3:22 pm
Forum: DBTC Forum
Topic: Spin On Oil Filter
Replies: 24
Views: 2319

Re: Spin On Oil Filter

Thanks Gard, After a good deal of research and trial and error what I found is; it is very possible to make such an adaptor, however little or no benefit will be realized from it. The filter I chose was a Fram PH3786 oil filter due to the large thread, 1 1/2" by 16, this filter was also necessary fo...
by gwatts
Wed Dec 12, 2018 12:03 pm
Forum: DBTC Forum
Topic: Spin On Oil Filter
Replies: 24
Views: 2319

Re: Spin On Oil Filter

This filter does not have the built in bypass that db2d points out so I'll have to do some research to find a filter that complies. I went with this filter because the large base allowed for more and larger passages to be included insuring that I did not restrict oil flow. This filter uses a 1 1/2" ...
by gwatts
Wed Dec 12, 2018 2:45 am
Forum: DBTC Forum
Topic: Spin On Oil Filter
Replies: 24
Views: 2319

Re: Spin On Oil Filter

I can tell you why I would take the time to make an adaptor. It was a rainy nasty weekend, I have a heated workshop, machine tools and just wanted to get out of the house. I'm not trying to improve the DB 990, it was just fine leaving the factory, I just needed a project. Before the real machinist b...
by gwatts
Sun Dec 09, 2018 12:35 pm
Forum: DBTC Forum
Topic: 990 PAS leaking and worn
Replies: 4
Views: 1119

Re: 990 PAS leaking and worn

My 990 PAS cylinder is also scragged. I've tried having it resealed by a hydraulic repair shop twice with poor results. The previous owner welded the forward end of the cylinder closed for some reason and ruined the whole thing. I looked at Agriline and David brown parts but didn't see any PAS cylin...