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Cowhide65 
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Joined: 04 Apr 2022
Location: Arkansas
Points: 6
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 Topic: 16B power shift dozer
Posted: 04 Apr 2022 at 5:16pm |
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Friend called wanted me to change all the hydraulic lines on the dozer got all the lines changed now it won't go forward or backwards very well it is very slow no power want turn worked fine when he parked it a year ago any advise thank you
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CAL(KS)
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Joined: 18 Sep 2009
Location: Chapman, KS
Points: 3786
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Posted: 05 Apr 2022 at 8:20am |
i would guess air still in lines or lines crossed. converter wont function correctly till all air out and full of oil.
Edited by CAL(KS) - 05 Apr 2022 at 8:20am
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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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steve(ill)
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Joined: 11 Sep 2009
Location: illinois
Points: 81238
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Posted: 05 Apr 2022 at 9:07am |
could be no oil ( air trap) in converter............ could also be similar problem with steering / brake valve.... No oil / too much air in lines.
Might check filters and suction screens , oil levels , pressure out of filters...
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Like them all, but love the "B"s.
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Cowhide65
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Location: Arkansas
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Posted: 05 Apr 2022 at 1:31pm |
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Any suggestions on how to remove the air
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steve(ill)
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Joined: 11 Sep 2009
Location: illinois
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Posted: 05 Apr 2022 at 3:57pm |
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need to prime the pump.... Not sure exactly where the suction screen (canister??) and filter (canister??) are, but remove, clean and fill with oil.
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Like them all, but love the "B"s.
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DMiller
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Joined: 14 Sep 2009
Location: Hermann, Mo
Points: 31094
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Posted: 05 Apr 2022 at 5:27pm |
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Could be same or similar issue I had with the 7G, New Suction Line SUCKING air, could not make stop so reinstalled old line, worked fine. Ended up cutting fittings from Donor Tractor Suction lines(OE were Special Allis Fittings) and set them up as Adaptor Fittings for basic Hoses, that worked easiest. Eventually had to swap out Hyd Pump(Off Donor) for Trans as would not retain suction and all the woes went away.
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Cowhide65
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Location: Arkansas
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Posted: 06 Apr 2022 at 4:36am |
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Thank you for the help I'll prime it in the morning and see what happens
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Cowhide65
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Location: Arkansas
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Posted: 08 Apr 2022 at 5:52am |
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well guys I prime the system and I think I have another problem dozer still want move I don't have pressure anywhere the blade works no forward or backwards movement what do I need to be looking for now
Edited by Cowhide65 - 08 Apr 2022 at 5:55am
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DMiller
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Joined: 14 Sep 2009
Location: Hermann, Mo
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Posted: 08 Apr 2022 at 6:24am |
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Hydraulic pumps are PDP (positive displacement pump)
They either pull oil or can’t.
If is not pulling from sump either sucking air or the drive is failed or the clearances are too wide internally. There are no other choices if was moving oil prior.
Bucket system is separate has nothing to do with transmission.
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Ages Cat
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Joined: 12 Sep 2009
Location: Hutchinson, MN
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Posted: 08 Apr 2022 at 5:18pm |
We changed hoes on our 540 wheel loader. We have struggled with it ever since. My advise- change 2 at a time.
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Curt Anderson
HD3, HD5B, HD6AG,HD6B dozer, I-400,615, 616,620,720,ACP25 lift truck, 1956 D Grader, AC 540 loader, AC #84 plow, Simplicity tractors, Agco MT225, Agco 2025,
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Codger
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Joined: 23 Dec 2020
Location: Utopia
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Posted: 08 Apr 2022 at 6:12pm |
I can't attest to a 16B myself but I have an 11B and they are similar. While you primed the system, are you certain the transmission filter cannister is full? This should lead directly to the transmission pump that is either flywheel, or torque converter driven. If this filter and housing is not full and depletes, the transmission pump will not self prime as it requires slight fluid pressure on it's input side. Extremely low oil level will cause this also. You need to ensure the transmission is full, and this filter housing is full or it can give the symptoms you are experiencing.
While a hydraulic pump is "Positive Displacement", most have a very limited ability to self prime, (especially gear pumps) as they rely upon the sealing the oil provides to take up the clearances internal to their design. This is why their respective "sump/tank" is located above their inlet section. They are not designed to move "air".
Edited by Codger - 08 Apr 2022 at 6:23pm
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Codger
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Posted: 11 Apr 2022 at 7:08am |
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any updates?
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Codger
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Posted: 14 Apr 2022 at 5:34am |
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Assuming the problem got sorted and that's great.
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Ian Beale
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Joined: 03 Oct 2011
Location: New South Wales
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Posted: 14 Apr 2022 at 5:41am |
IIRC the brake/steer pump is up below the injector pump and well above the reservoir?
Our FA 10 has the pumps at the bottom of the converter housing so flooded suction and you're still supposed to run the engine very short cycle to prime them.
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Cowhide65
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Location: Arkansas
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Posted: 29 Sep 2024 at 1:44pm |
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Ok sorry so long to get back it took me awhile to check all the suggestions we are moving forward and reverse but it want change when you move the power shift into 2nd the engine never loads up in 1st or 2nd
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Doughd16b
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Joined: 01 Sep 2022
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Posted: 12 Nov 2024 at 9:27pm |
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I have a 16b also and when I first got it, it did almost the same, ended up being the torque converter. I can give you some tips on things to check but is way too much to type, you can give me a call anytime 252 916 2927
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