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kinghunter 
Silver Level
Joined: 30 Jan 2010
Location: Kansas/Missouri
Points: 407
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 Topic: Well any ideas
Posted: 02 May 2022 at 12:23pm |
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Well changed pump head on my hd6 buda dozer. Had all timing marks lined up. Only start on full throttle. No throttle response at all. If you try to raise blade it dies. If you lower throttle to half throttle it dies. So not sure where I went wrong. I’m about to repower dozer if I can’t figure this out with a deutz engine.
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CAL(KS)
Orange Level
Joined: 18 Sep 2009
Location: Chapman, KS
Points: 3734
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Posted: 02 May 2022 at 1:22pm |
if the head didnt change anything it still could be governor or fuel supply issue. do you have any fuel pressure on the gauge? i cant remember what was covered before
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Me -C,U,UC,WC,WD45,190XT,TL-12,145T,HD6G,HD16,HD20
Dad- WD, D17D, D19D, RT100A, 7020, 7080,7580, 2-8550's, 2-S77, HD15
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Kcgrain
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Joined: 24 Sep 2009
Location: Wisconsin
Points: 767
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Posted: 10 May 2022 at 9:27am |
No such thing as an HD6 with a BUDA engine, is your first issue.
Before I would repower with a Deutz I would remove the pump and take it to a shop that knows what they're doing and have it rebuilt, including the injectors.
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Lee Bradley
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Joined: 13 Oct 2009
Location: Kingston, WA
Points: 115
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Posted: 10 May 2022 at 10:22am |
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Our HD-6 had an engine with BUDA cast in the intake manifold. Easy mistake thinking its a BUDA.
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Codger
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Joined: 23 Dec 2020
Location: Illinois
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Posted: 10 May 2022 at 10:53am |
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Wasn't it a Buda designed engine prior to AC purchasing the company outright?
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CAL(KS)
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Joined: 18 Sep 2009
Location: Chapman, KS
Points: 3734
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Posted: 10 May 2022 at 11:52am |
 Codger wrote:
Wasn't it a Buda designed engine prior to AC purchasing the company outright? |
yes, buda engines bought by allis. buda lanova cycle until 58' when ac redesigned the cylinder heads on the 844 for direct injection. the 516 and 344's came a few years later in the early 60's. good luck finding a place to rebuild a psb pump. no parts available anymore. most wont touch it.
Edited by CAL(KS) - 10 May 2022 at 11:53am
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Me -C,U,UC,WC,WD45,190XT,TL-12,145T,HD6G,HD16,HD20
Dad- WD, D17D, D19D, RT100A, 7020, 7080,7580, 2-8550's, 2-S77, HD15
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Ian Beale
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Joined: 03 Oct 2011
Location: New South Wales
Points: 933
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Posted: 11 May 2022 at 4:06am |
Cal is right. Allis dropped GM about 1952 or 53 when GM bought Euclid and went into competition. Bought Buda to replace them.
Timing for the head on a PSB 6 head from what I have is
"Marked tooth located the distance of 1 tooth to rear of timing pointer"
The drive gear end is different with a grader engine.
Two things IIRC
- you've not long overhauled that engine?
- This problem happened when you let it sit over winter?
If you own it over earlier winters did it ever do this? If not what was different about this winter?
Will it come back to idle with the changed head? And if it does will it accelerate back to full throttle?
Any chance you can get the rest of the pump that replacement head came off and try that as a unit?
A working second hand pump would be less cost and testing of engineering expertise than grafting a different engine in (that is my depreciated 2 cents worth!).
Fair enough using a Deutz if you hanker for an "Aircooled AC". A Detroit from an earlier Allis series would be more of a drop in I'd have thought.
I'm no expert but (from the experience I have) it still seems to me that you have a problem somewhere that is not letting the governor run the fuel control side.
Best of luck
Edited by Ian Beale - 11 May 2022 at 4:54am
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