Search found 4082 matches

by ollek
Sun May 10, 2020 11:34 am
Forum: DBTC Forum
Topic: 885 problems continued
Replies: 6
Views: 329

Re: 885 problems continued

The front end of the cardan shaft has splines that are in contact with the splines in the pto clutch plate. There is no couplinngs bewtwen the coupling in the pto unit and the clutch plate. Item ref 10 in the following link is the pto drive (cardan) shaft. https://partstore.caseih.com/us/parts-searc...
by ollek
Sun May 10, 2020 7:13 am
Forum: DBTC Forum
Topic: 900 lift piston rings
Replies: 8
Views: 781

Re: 900 lift piston rings

A oil leak from the front of the cylinder must be from betwen cylinder and pressure pipe. A leak past the piston shows up as a leak at the rear end of the piston / rear end of the cylinder. I would check the sealing washers betwen the pressure pipe and the front of the cylinder.
by ollek
Sun May 10, 2020 12:38 am
Forum: DBTC Forum
Topic: 1594 dump valve
Replies: 1
Views: 176

Re: 1594 dump valve

Soundfs like your hydraulic system is out of adjustments. Setting instructions can be found in the service manual for 1490, 1494, 1594, 1690 and section 8280 in the following link https://drive.google.com/drive/folders/ ... XpLbm0wQzQ
by ollek
Sat May 09, 2020 4:19 pm
Forum: DBTC Forum
Topic: 996 4wd axles
Replies: 1
Views: 190

Re: 996 4wd axles

The shape of the axle housing and the way of fixing the axle to the tractor frame and the steering cylinders are different. First the David Brown axle https://partstore.caseih.com/us/parts-search.html#epc::mr66549ar1298632 and then the Carraro axle https://partstore.caseih.com/us/parts-search.html#e...
by ollek
Sat May 09, 2020 10:31 am
Forum: DBTC Forum
Topic: Sourcing Glass Fuel Bowl - 780 Selectamatic
Replies: 6
Views: 303

Re: Sourcing Glass Fuel Bowl - 780 Selectamatic

This is something that creeps up now and then. You can get a new lift pump with the small bowl from the following supplier. Only the bowl is not available from any source. Sayng that, you can always visit a tractor scrapyard and hope to find one. http://www.davidbrownparts.com/Fuel%20System.html
by ollek
Sat May 09, 2020 3:28 am
Forum: DBTC Forum
Topic: Hydrashift on 1494
Replies: 3
Views: 258

Re: Hydrashift on 1494

The reason can be dirt, or sticking, in one of the sequence valves. Without any testing I would say that the rear planetary unit valve is dumping the oil from the rear planetary unite too fast or the pressure in the front unit builds up too slowly. I recommend a driving test and then a pressure test...
by ollek
Fri May 08, 2020 2:18 pm
Forum: Members Restorations
Topic: db 880
Replies: 1
Views: 897

Re: db 880

Well, you dont say if the 880 tractor you have is a Implematic or a Selectamatic. 12.4-28 tyres can not be fitted to 30 inch rims, the rims have bigger diameter than the tyres. Please have a look in the following link, it will show you the technical informations for your tractor http://dbtc.co.uk/in...
by ollek
Thu May 07, 2020 3:40 pm
Forum: DBTC Forum
Topic: Identifying tractor model
Replies: 6
Views: 453

Re: Identifying tractor model

Look in thje following two links. The first one is about serial numbers and the second one shows the 990 Implematic tractor http://dbtc.co.uk/index.php/information/serial-numbers second link http://dbtc.co.uk/index.php/990-implematic
by ollek
Wed May 06, 2020 2:51 pm
Forum: DBTC Forum
Topic: Case 380Ck/Db 885 Hydraulic Filter
Replies: 13
Views: 506

Re: Case 380Ck/Db 885 Hydraulic Filter

There is a shallow groove in the suction pipe and a O-ring of the correct size will keep the filter in place. The following company in UK have the correct filter http://www.davidbrownparts.com/Filtration.html
by ollek
Wed May 06, 2020 2:08 am
Forum: DBTC Forum
Topic: Case 380Ck/Db 885 Hydraulic Filter
Replies: 13
Views: 506

Re: Case 380Ck/Db 885 Hydraulic Filter

Case IH in USA recommends Hytran to be used in the transmission. This is because Hytran is a International Harvester (Case IH) brand, and International Harvester and later Caser IH tractors uses this oil. It is not wrong to use Hytran, but David Brown was not built to use Hytran and it is a expensiv...
by ollek
Tue May 05, 2020 3:41 pm
Forum: DBTC Forum
Topic: Case 380Ck/Db 885 Hydraulic Filter
Replies: 13
Views: 506

Re: Case 380Ck/Db 885 Hydraulic Filter

The pump will suck dirty oil from the transmission if the suction filter is not in the correct position in the suction tube. This dirt wll start to builkd up at the small pin hole in the by-pass valve restrictor. A partly blocked pin hole will result in an oil leak at the by-pass valve. please remov...
by ollek
Tue May 05, 2020 6:31 am
Forum: DBTC Forum
Topic: Case 380Ck/Db 885 Hydraulic Filter
Replies: 13
Views: 506

Re: Case 380Ck/Db 885 Hydraulic Filter

Yes, I have heard of this problem and the reson seems to be that the after markeing filters can be made to the wrong measurements. One way to overcome the problem is to remove the bolt that holds the suction pipe to the frame, discard the washer and grind of half of the thicknes of the bolt head. Th...
by ollek
Mon May 04, 2020 5:02 pm
Forum: DBTC Forum
Topic: DB 880A Selectamatic 3PH Will Not Lift Load
Replies: 25
Views: 7986

Re: DB 880A Selectamatic 3PH Will Not Lift Load

All Selectamatic tractors have the same valve chest (control valve).
by ollek
Mon May 04, 2020 1:52 pm
Forum: DBTC Forum
Topic: 990 hydraulics
Replies: 3
Views: 312

Re: 990 hydraulics

The lowering speed adjustment system is built to work with a load connected to the lower link. The lowering speed is slow, regardles of the lowering speed adjusters position, with empty lower links, and this is how it works. You need to operate the dump valve in order to make the lowering speed fast...
by ollek
Sun May 03, 2020 3:46 pm
Forum: DBTC Forum
Topic: Back end oil
Replies: 8
Views: 444

Re: Back end oil

The lower links will jump up and down if there is a leak in the valve chest or in the lift cylinder or the pipe betwen the valve chest and the lift cylinder is leaking (O-ring leaking at the valve chest end or the pipe burst). Lift the load and close the supply to the lift cylinder with the 3-way va...