Search found 243 matches

by Gard
Tue Apr 30, 2019 3:32 am
Forum: DBTC Forum
Topic: By-pass valve removal tip
Replies: 17
Views: 1654

Re: By-pass valve removal tip

I think a quick light touch with 1000 grit wet or dry "sandpaper" is really more of a polishing step than sanding, it will remove small fractions of one thou (0.001") from steel. Removing even 0.0001" takes a lot of work with 1000 grit. With tight fitting parts like this I would be very concerned ab...
by Gard
Fri Apr 26, 2019 3:19 pm
Forum: DBTC Forum
Topic: Dynamo and regulator wiring
Replies: 32
Views: 2352

Re: Dynamo and regulator wiring

I suspect that how well a specific voltage inverter works may depend on how clean the signal is, it may work fine with a battery but not so good with a mechanically regulated generator. There is probably one out there that could be made to work fine. Sounds like a good project for an electrical engi...
by Gard
Fri Apr 26, 2019 1:59 am
Forum: DBTC Forum
Topic: Dynamo and regulator wiring
Replies: 32
Views: 2352

Re: Dynamo and regulator wiring

Interesting discussions here, I found a comprehensive manual on the Lucas voltage regulator and generator. I was able to disassemble clean, adjust and got it all working (on a 900). I think the manual was on the web site found by searching on haynes. It has a lot of theory that may also apply to you...
by Gard
Sat Apr 20, 2019 11:23 pm
Forum: DBTC Forum
Topic: Spun bearing on 990
Replies: 15
Views: 1586

Re: Spun bearing on 990

I do not have much experience rebuilding engines but would assume you will need a new connecting rod. I think you should be able to measure the crankshaft diameter to see if it is within spec (from service manual). Might be a good idea to pull the pistons out and try to get an idea of overall cost b...
by Gard
Sat Apr 20, 2019 9:57 pm
Forum: DBTC Forum
Topic: Hydraulic take off on db 25
Replies: 23
Views: 1690

Re: Hydraulic take off on db 25

I flushed out the transmission in my late 900 (pre implematic) with diesel. I had found the gauze disconnected and filled with water and crud. I think I have had just about every hydrauliuc component apart and cleaned (3ph valves, ram cylinder and TCU valve and pump). I don't know if diesel was the ...
by Gard
Tue Apr 09, 2019 10:46 pm
Forum: DBTC Forum
Topic: 900 seat and mudguard
Replies: 0
Views: 1445

900 seat and mudguard

I have started working on seat and mudguard. I have more time than money at this point so am trying to repair and reuse as many parts as possible. I know the seat support system is not correct but am not too sure what it is supposed to look like. I am repairing the battery box and am using a photo f...
by Gard
Mon Apr 01, 2019 4:30 pm
Forum: DBTC Forum
Topic: Cropmaster steering
Replies: 4
Views: 539

Re: Cropmaster steering

As you turn the wheel back and forth look closely for any vertical movement in the steering wheel. This would indicate a problem with the spherical ball bearing at the top of the steering column. You may or may not see any sideways wobble. If all is tight at the top it must be something at the botto...
by Gard
Sun Mar 31, 2019 12:45 am
Forum: DBTC Forum
Topic: Cropmaster engine and tractor numbers
Replies: 18
Views: 1724

Re: Cropmaster engine and tractor numbers

I think the 900 engine is same or similar to Cropmaster, it certainly has little in common with my 990 implematic. Can you tell me what the "back side plate" is? Is this the cover over the pushrods? There is a flat machined surface below the rear pushrod cover on my 900, I have cleaned this area but...
by Gard
Sat Mar 30, 2019 9:08 pm
Forum: DBTC Forum
Topic: Cropmaster engine and tractor numbers
Replies: 18
Views: 1724

Re: Cropmaster engine and tractor numbers

Geoff, any chance you could provide a photo of the location? I am afraid I am not following your description. I assume it must be someplace you can see without disassembling the tractor? The only number I have ever found on my 900 tractor is 030 on the engine. Thanks
by Gard
Sat Mar 23, 2019 2:46 pm
Forum: DBTC Forum
Topic: Manifold gaskets
Replies: 9
Views: 913

Re: Manifold gaskets

Do you know what technology the gasket maker uses, big metal punches, Laser, water jet, high speed router....
by Gard
Thu Mar 21, 2019 1:36 pm
Forum: DBTC Forum
Topic: Referb injectors
Replies: 5
Views: 774

Re: Referb injectors

I understand the need to have the bores clean but wonder if a very light coat of grease will keep rust off the injector or bore?
by Gard
Mon Mar 11, 2019 1:23 pm
Forum: DBTC Forum
Topic: Gear Lever Rubber Boots
Replies: 12
Views: 1325

Re: Gear Lever Rubber Boots

I replaced the ones on my late 900, they would not stay in place on the transmission, I ended up cleaning up the casting a little with an angle grinder to make a better lip, and installing them with silicone gasket sealer. They have held up good since then. The boots came from davidbrownparts
by Gard
Mon Mar 11, 2019 1:11 pm
Forum: DBTC Forum
Topic: Break pedal removal.
Replies: 7
Views: 927

Re: Break pedal removal.

I have a 990 that had one of the brake pedals seized to the shaft many years ago, I ended up cutting part of the right foot rest to get the pedal off, Unfortunately I don't remember all the details but I did get a fairly good looking weld when putting it back together that you can still see if you l...
by Gard
Sun Mar 03, 2019 12:28 pm
Forum: DBTC Forum
Topic: 880 Selectamatic poor starting
Replies: 6
Views: 778

Re: 880 Selectamatic poor starting

I agree with Rid54, Check for good flow from bleed screws with engine cranking, Others more knowledgeable than me have said a rebuilt engine needs to be broken in with some hard work. I would certainty do a compression test and service injectors before rebuilding injection pump. Not sure about where...
by Gard
Fri Mar 01, 2019 4:02 pm
Forum: DBTC Forum
Topic: Interchangeability of parts
Replies: 13
Views: 3006

Re: Interchangeability of parts

On a similar issue with 900 which may be same axle as your 30, The correct Timken tapered wheel bearing, 19283X with 19138X cost more than the entire tractor. Some measuring found National 30207 for $ 18 from Rock Auto, they fit OK, are slightly wider than the Timken and have a 14 degree cone instea...