Search found 306 matches

by Gard
Thu Jun 25, 2020 5:40 pm
Forum: DBTC Forum
Topic: David Brown 1200 Rope Seal Rear Crank
Replies: 14
Views: 423

Re: David Brown 1200 Seals

I do not know about the part numbers but I suspect the one you have will work. I do not remember where I got mine but I think you will be able to get it to work unless it is too small.
by Gard
Thu Jun 25, 2020 12:36 pm
Forum: DBTC Forum
Topic: David Brown 1200 Rope Seal Rear Crank
Replies: 14
Views: 423

Re: David Brown 1200 Seals

As DB2D says, check the service manual. I ended up doing a trial fit of the housing and seal to a test shaft of the same diameter as the crankshaft. It was seized up tight. I trimmed the rope so that it was tight but could be rotated by hand, this took a couple of attempts. Then I disassembled from ...
by Gard
Wed Jun 17, 2020 1:27 pm
Forum: DBTC Forum
Topic: 25c Repairs
Replies: 14
Views: 496

Re: 25c Repairs

I agree with Cobbadog, another thing is to make sure the filter seals to the pickup tube, I found my pickup tube was bent slightly so not in good contact to the filter. You may find you will eventually need to remove and clean all hydraulic valves. I have used JB weld on gauze filters and it seems t...
by Gard
Tue Jun 16, 2020 5:06 pm
Forum: DBTC Forum
Topic: 950 compression testing
Replies: 4
Views: 204

Re: 950 compression testing

If you remove one of your injectors and bring it and your gauge to a local machine shop you may find they can make an adapter for a reasonable price. The local diesel mechanic may have some scrap ones of similar shape. Some compression gauges have a rubber tipped gauge you press into the hole, not s...
by Gard
Thu Jun 04, 2020 10:59 pm
Forum: DBTC Forum
Topic: David Brown 1200 fluids and gearbox filler
Replies: 19
Views: 598

Re: David Brown 1200 fluids and gearbox filler

From what I have found 7/8 UNF is 14 TPI, in other words 7/8-14. This should be SAE 10 O-ring boss. To me the fitting on the end of the hose looks like JIC but you can remove it from the adapter to be sure. I usually buy from surplus center on line, the catalog has nice charts to identify plumbing f...
by Gard
Thu May 14, 2020 5:28 pm
Forum: DBTC Forum
Topic: 900 lift piston rings
Replies: 8
Views: 864

Re: 900 lift piston rings

dbd2, Thanks for the info, I will contact davidbrown parts. Its too bad they don't have on line ordering, last time I ordered some small parts from them the international phone call ended up costing me more than the parts. I guess I should look into my phone plan. I certainty do appreciate the exper...
by Gard
Sun May 10, 2020 1:46 pm
Forum: DBTC Forum
Topic: 900 lift piston rings
Replies: 8
Views: 864

Re: 900 lift piston rings

My apologies, I got my front and back twisted up. Front and back should be based on the front and back of the tractor even if I am looking backwards LOL. This tractor has no provision for connecting to a dumping trailer. There is a round plate about 5 inches in diameter where an optional diverting v...
by Gard
Sun May 10, 2020 1:56 am
Forum: DBTC Forum
Topic: 900 lift piston rings
Replies: 8
Views: 864

900 lift piston rings

The 3PH lift cylinder will raise a heavy implement however it will slowly drop down even in the hold position. The trailer will drop to the ground within 1/2 hr or so after engine is turned off. I took off the cover by my left foot and I can see oil dripping from the front of the cylinder in the hol...
by Gard
Wed May 06, 2020 1:11 pm
Forum: DBTC Forum
Topic: Case 380Ck/Db 885 Hydraulic Filter
Replies: 13
Views: 653

Re: Case 380Ck/Db 885 Hydraulic Filter

I was thinking about the countersink bolt also but I wonder what holds the filter up? Just the friction of the O-ring? It seems like there should be some kind of spring under the filter? If the bolt is replaced with a flat head does there need to be a corresponding thickness spacer on the bottom? My...
by Gard
Mon May 04, 2020 5:01 pm
Forum: DBTC Forum
Topic: 900 battery box
Replies: 4
Views: 337

Re: 900 battery box

cobbadog, thanks for the photos, they give me some good ideas to work with.
db2d, thanks for the information on what was original from the factory, I thought I had seen someplace there was an option to mount a battery to the side on later tractors but could not find any details.
by Gard
Sun May 03, 2020 10:56 pm
Forum: DBTC Forum
Topic: 900 battery box
Replies: 4
Views: 337

900 battery box

My 900 has the battery mounted to the right side frame in front of the brake pedals in a very crudely welded box. I would like to fabricate something a little closer to what might of been original on this or a similar tractor. Anybody have a photo and perhaps some dimensions? I do not want to go bac...
by Gard
Thu Apr 30, 2020 11:16 pm
Forum: DBTC Forum
Topic: AD3/55 880 Selectamatic new rings?
Replies: 16
Views: 917

Re: AD3/55 880 Selectamatic new rings?

When I have an engine this far apart I will be checking bore diameter and perhaps bearings also. Remove ridge, bore if appropriate then hone. A little easier for me since I have the proper measurement tools. I can see the argument of just putting in new rings and hoping for the best but with the tim...
by Gard
Mon Apr 27, 2020 2:10 pm
Forum: DBTC Forum
Topic: 990 selectamatic hold dump valve missing ball ???
Replies: 21
Views: 1186

Re: 990 selectamatic hold dump valve missing ball ???

cool trick, thanks for shareing
by Gard
Sun Apr 19, 2020 6:55 pm
Forum: DBTC Forum
Topic: best way to attach trailer?
Replies: 12
Views: 815

Re: best way to attach trailer?

Thanks for all the helpful comments. I find it is always good to spend more time thinking before cutting metal. I found a heavy ring and attached it to the front of the trailer. This fits over a standard ball and worked well. Then I made a pin which seems to work even better. I may make something to...
by Gard
Thu Apr 16, 2020 2:10 pm
Forum: DBTC Forum
Topic: best way to attach trailer?
Replies: 12
Views: 815

Re: best way to attach trailer?

Thanks for all the comments, I will have a look around and see what I can find or buy locally to work with. I think having something that I can see from the seat to tell when it is aligned and where alignment needs to be within 1 or 2 cm instead of the several mm needed with my current setup will he...