HD6 Injector pump
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Construction and other equipment
Forum Description: everything else with orange (or yellow) paint
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=135473
Printed Date: 14 Nov 2024 at 1:07am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: HD6 Injector pump
Posted By: Tfordala
Subject: HD6 Injector pump
Date Posted: 24 Feb 2017 at 7:33pm
| Is the pump timed with the engine? Also..it sat up for 2 yrs..we can get fuel out of the everywhere except the top 4 lines..the single line to the injectors has pressure on it as you spin the motor but no fuel at all from T the top 4..Would the pump need rebuilding and if so..where can I send it to be built? |
Replies:
Posted By: AC Mel
Date Posted: 24 Feb 2017 at 10:14pm
| Terry, Yes the pump is timed to the engine.Any chance you could post a picture? The PSB pump that was common on those was very temperamental. If they sit very long and you hit the starter, things can break? Any other history? Tractor serial number? |
Posted By: JC-WI
Date Posted: 25 Feb 2017 at 1:15am
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Open the side cover where the cable goes in and check to see if the shut off lever is moveable and check to see if the governor arm is free to move also...and lifting collar in back. ------------- He who says there is no evil has already deceived himself The truth is the truth, sugar coated or not. Trawler II says, "Remember that." |
Posted By: Tfordala
Date Posted: 25 Feb 2017 at 8:36am
| HD6B 11474 is the serial number on this dozer..it sat for 2 yrs and previous owner couldn't get it to crank so I bought it..I'm thinking this pump is bad but its getting fuel through the 1 line to the injectors but no fuel out the 4 lines on top to the injectors.W |
Posted By: Tfordala
Date Posted: 25 Feb 2017 at 8:40am
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Posted By: DMiller
Date Posted: 25 Feb 2017 at 8:46am
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You could try to check the transfer pump section, is the unit with two lines at bottom of photo, put the output line into a can and crank the engine see if it works at all. Is a typical PSB injection pump and few shops will work them anymore. |
Posted By: AC Mel
Date Posted: 25 Feb 2017 at 10:12am
| Terry, Dave's right to try and check the transfer pump. It kind of sounds like it might be working. I would loosen all 4 injector lines at the top of the pump or where they go into the injector in the head and turn the engine over to see if you have fuel from all 4 lines. I'm unsure of the other line you are talking about. It sounds like you are talking about the return line that comes out of all the injectors and is hooked together. If so you won't get any fuel out of that line until it is actually running. Is that a crack in the side of the pump to the left of the spec plate? |
Posted By: Tfordala
Date Posted: 25 Feb 2017 at 10:52am
| No cracks. The 4 lines on top we get nothing out of..the 1 single line that runs from the injectors back to the pump is only place I'm getting fuel from..instead of the pump pumping it out the top 4 lines..its pushing it back up the return line to the injectors..we have used some either and it fired right up but pump seems to be working backwards somehow. |
Posted By: LeonR2013
Date Posted: 25 Feb 2017 at 12:55pm
| Sure looks like a crack to me. |
Posted By: gemdozer
Date Posted: 25 Feb 2017 at 1:08pm
| If you could removed the small cover from injection pump for cable control and removed the 2 small screws and removed the lock spring from pine and pull out the small cylinder with a small pine at the end that pine could be brooken. |
Posted By: JC-WI
Date Posted: 25 Feb 2017 at 1:39pm
Take that side cover off that is held by the two screws and see if the arm is free, like gem dozer said, thake the govenor arm off the little swing arm that goes into the pump and see if it swings effortlessly there... and take te two screws out there and pull outthe arm and see if that arm fall on its own weight. it has to be that free... and see if a little "T" pin is broke or not if. if it all is good, you need to see if you have a passage that is plugged. ------------- He who says there is no evil has already deceived himself The truth is the truth, sugar coated or not. Trawler II says, "Remember that." |
Posted By: Tfordala
Date Posted: 25 Feb 2017 at 5:24pm
| All works freely. Nothing broken I can see..I'm Starting to think I got a money put on my hands |
Posted By: Ian Beale
Date Posted: 25 Feb 2017 at 7:14pm
|
If you're getting fuel under pressure out of that return line maybe have a look at the elbow where it connects to the front of the pump. There should be either a pressure valve around there (this from AC 45 book - I've never seen one) or a restrictor hole in that elbow. |
Posted By: DMiller
Date Posted: 25 Feb 2017 at 8:01pm
| There has to be some return fuel from the pump to keep from popping the transfer pump or inj pump seals. If the shut off pin is broken it will be sending all the pumped fuel back to tank. |
Posted By: Steve allis dozer
Date Posted: 26 Feb 2017 at 1:36am
|
Just something you could look at ! I ran my dads HD11 out of fuel once and when i tried to get it going again I could not get any fuel at the pump like you describe , after trying a lot of different things i end up checking the lines right back to the tank and found one of the rubber hoses had perished and the rubber had blocked the line completely (it looked fine on the outside ) anyway after replacing them fuel flowed to the pump no problem , the tractor even started and ran better than it ever had since my dad bought it .
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Posted By: Tfordala
Date Posted: 05 Mar 2017 at 10:16am
| Where can I get a manual to Show how to set the pump timingvto the engine? |
Posted By: darrel in ND
Date Posted: 05 Mar 2017 at 1:48pm
| There is an ad in the clissifieds section of this forum, where a guy is selling construction and engine manuals. Might be worth it to give that a try. I just seen that now. Good luck. Darrel |
Posted By: JC-WI
Date Posted: 06 Mar 2017 at 9:03am
|
Tfordala, I believe that you will find the pump timing is in one of the
pics I sent you... pic HD6 pump7 and it will show page 32 at bottom of
pic and starts at 'Procedures for installing and timing the fuel
injection pump'. If any one else wants photo copied info on injection pump timing and settings and how the metering valve works etc., there are 17 jpg pics or rather 17 pages from repair book. ... Send your email address and I will send them to you through email. ------------- He who says there is no evil has already deceived himself The truth is the truth, sugar coated or not. Trawler II says, "Remember that." |
Posted By: raptuous
Date Posted: 14 Mar 2017 at 7:41pm
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Hi, I just registered on here after finding a lot of good info already. Keeping with the scope of this thread I have a HD 6G crawler I'm trying to get going with a lot of help from my diesel mechanic friends. It was left in the bush for four years and the top of the engine got water in it. Block wasn't cracked but the valve seats and face were heavily rusted so it's just come back from the machine shop with a good seal. I've ordered a top end gasket set from Syracuse Machine and should have the starter rebuilt by the weekend. Some rust on the cylinder walls but I should be able to hone it out. Here's my question, we rolled it over two weeks ago and we had fuel come out of the loosened injector lines. The injectors were sent off to an injector shop and three of the four were seized. They've got them apart miraculously but aren't sure if the tips can be saved. Does anyone know a Bosch number to find replacements and what the injection pumps PSI should be? If they can salvage the injectors they'd like to know what pressure to set them to. Engine is a 6000 series, deep dish pistons and direct injection. The seller gave me a parts breakdown manual with it and had written S/N 17xxx so hoping it's for this machine. Any random advice is appreciated.
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Posted By: Tfordala
Date Posted: 27 Mar 2017 at 9:30pm
I need this head for my pump. mailto:%20" rel="nofollow - 
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Posted By: donoman
Date Posted: 28 Mar 2017 at 12:53am
| There is a nut on the side off the hydraulic head on the PSB pump ,undo it and make sure the little spring inside is not broken or jammed . |
Posted By: gemdozer
Date Posted: 28 Mar 2017 at 5:12am
| I have 3 injection pumps PSB4A but only one have a tag on side head 59000 ar |
Posted By: logdog1200
Date Posted: 03 Apr 2017 at 9:41pm
| I have a manual right here in front of me. I can copy these pages and mail them to you if you like. |
Posted By: Ian Beale
Date Posted: 03 Apr 2017 at 10:52pm
Gemdozer I understand that the "r" sufix says rebuilt |
gemdozer wrote:Posted By: Tfordala
Date Posted: 09 Apr 2017 at 8:19am
| Can you email the timing instructions on the HD 6 injector pump to TFordALA@AOL.COM..Thanks. Terry Ford |