Search found 68 matches

by ALANJ
Sun Jun 28, 2020 8:39 am
Forum: DBTC Forum
Topic: Newbie 990 Selectamatic questions
Replies: 17
Views: 969

Re: Newbie 990 Selectamatic questions

Further to correspondence on this subject , when you obtain the said rate of lowering valve you will find a free fitting annular collar around the needle shank. This ring prevents the needle being Inadvertently,totally unscrewed from the valve chest. This means that when fitting the valve to the che...
by ALANJ
Sat Jun 27, 2020 7:57 am
Forum: DBTC Forum
Topic: Newbie 990 Selectamatic questions
Replies: 17
Views: 969

Re: Newbie 990 Selectamatic questions

Pleased the articles were of help. Good luck. AJK.
by ALANJ
Sun May 31, 2020 7:34 am
Forum: DBTC Forum
Topic: Hydraulic issues with DB885 lift
Replies: 10
Views: 753

Re: Hydraulic issues with DB885 lift

Q- Having followed the checklist, at what point did things go wrong ? As Ollek says, ,checking the settings is vital, especially the Group 3 with the quadrant control rod done first as maladjustment here is a common problem. I would also suggest removing the access plate above the valve chest and pl...
by ALANJ
Mon Jan 20, 2020 4:54 pm
Forum: DBTC Forum
Topic: Engine/ Block Interchangeability
Replies: 4
Views: 789

Re: Engine/ Block Interchangeability

Thank you , but how do I access the aforesaid PM ? Thanks in advance, AJK.
by ALANJ
Mon Jan 20, 2020 4:24 pm
Forum: DBTC Forum
Topic: Engine/ Block Interchangeability
Replies: 3
Views: 609

Re: Engine/ Block Interchangeability

Thanks for that , Sir. AJK.
by ALANJ
Sun Jan 19, 2020 8:22 pm
Forum: DBTC Forum
Topic: Engine/ Block Interchangeability
Replies: 4
Views: 789

Engine/ Block Interchangeability

All, some expert advice would be greatly appreciated here.Question- Are the engines/ blocks fully interchangeable between a DB petrol /paraffin 25C and a petrol/paraffin Cropmaster. Failing that ,does anyone have a serviceable block for a 25C ?
Thanks in advance , AJK.
by ALANJ
Sun Jan 19, 2020 8:22 pm
Forum: DBTC Forum
Topic: Engine/ Block Interchangeability
Replies: 0
Views: 3401

Engine/ Block Interchangeability

All, some expert advice would be greatly appreciated here.Question- Are the engines/ blocks fully interchangeable between a DB petrol /paraffin 25C and a petrol/paraffin Cropmaster. Failing that ,does anyone have a serviceable block for a 25C ?
Thanks in advance , AJK.
by ALANJ
Sun Jan 19, 2020 8:22 pm
Forum: DBTC Forum
Topic: Engine/ Block Interchangeability
Replies: 3
Views: 609

Engine/ Block Interchangeability

All, some expert advice would be greatly appreciated here.Question- Are the engines/ blocks fully interchangeable between a DB petrol /paraffin 25C and a petrol/paraffin Cropmaster. Failing that ,does anyone have a serviceable block for a 25C ?
Thanks in advance , AJK.
by ALANJ
Tue Dec 24, 2019 5:53 pm
Forum: DBTC Forum
Topic: Merry Christmas
Replies: 8
Views: 1123

Re: Merry Christmas

How wonderful that a small town in W. Yorks could send product worldwide and years later bring together enthusiasts from all over the globe , all bound together by the magical attraction of David Brown .
Festive greetings to all. AJK.
by ALANJ
Fri Dec 06, 2019 7:41 am
Forum: DBTC Forum
Topic: 1965 David Brown 880UE Implematic, how to prime transmission hydraulic pump?
Replies: 111
Views: 17108

Re: 1965 David Brown 880UE Implematic, how to prime transmission hydraulic pump?

Just a thought.Before removing the PTO housing ,why not check the pump is getting drive from the PTO clutch plate.To check engage the PTO with a dead engine and then try to manually turn the PTO shaft.If the shaft will not turn the driveline is good. If it does turn the driveline is at fault.Sometim...
by ALANJ
Wed Dec 04, 2019 4:30 pm
Forum: DBTC Forum
Topic: 1965 David Brown 880UE Implematic, how to prime transmission hydraulic pump?
Replies: 111
Views: 17108

Re: 1965 David Brown 880UE Implematic, how to prime transmission hydraulic pump?

May I suggest checking the pump for terminal wear. Implematic tractors were equipped with the Dowty , bush pressure balanced units which may wear in two areas. 1- Over time the two pumping gears can contact the bottom of the pump body and grind a wear track in the aluminium .If the wear track exceed...
by ALANJ
Wed Dec 04, 2019 7:45 am
Forum: DBTC Forum
Topic: 30C Diesel Starter Motor
Replies: 7
Views: 829

Re: 30C Diesel Starter Motor

To obtain an approximate figure do the following. 1- count the teeth on the flywheel and starter bendix gear. 2- divide the flywheel number by the bendix number. This is the gearing ratio. 3- most old Diesel engines require a cranking speed of approx 250/300 RPM Therefore multiply the 250/ 300 by th...
by ALANJ
Tue Dec 03, 2019 12:36 pm
Forum: DBTC Forum
Topic: 30C Diesel Starter Motor
Replies: 7
Views: 829

Re: 30C Diesel Starter Motor

This starter motor, or cranking motor as Lucas/Cav preferred to call them , is probably the early CAV unit ,fitted to 25/30 D,s amongst others in the early 50,s.We had two such tractors on our farm and these starters were totally reliable although they had a fearsome reputation with the repair shops...
by ALANJ
Sat Nov 09, 2019 4:17 pm
Forum: DBTC Forum
Topic: Adjusting spool valve
Replies: 4
Views: 880

Re: Adjusting spool valve

The external valve you refer to is a Cessna double acting unit set to kick into neutral when system pressure exceeds ,from memory, approx 2,000 psi. This avoids system overload on the open centre system caused by blowing off of the main relief valve, the MRV. The kick out setting can be adjusted by ...
by ALANJ
Wed Oct 30, 2019 7:44 am
Forum: DBTC Forum
Topic: Injection Pump Inlet Filter
Replies: 24
Views: 3134

Re: Injection Pump Inlet Filter

In answer to your query re non starting engine , as long as there is any fuel emanating from the pump return line that is enough.The FIP is then receiving all it needs.This return fuel is surplus to the pump requirements so the actual flow amount is irrelevant. Actual pump,FIP, output can only be sa...