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  1. Replies
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    Re: Another Jinma Overheating problem!

    Another trick that folks do to keep chaff out of the radiator is to fit a furnace filter in place of the chaff screen. Shake it out daily or as often as needed. Works like a champ. Heavy equipment...
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    Re: Another Jinma Overheating problem!

    The best coolant available contains no water at all. I plan on switching all my equipment over this fall. Evans waterless coolant. Actually water is a poor conductor of heat because it contains air...
  3. Replies
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    Re: Another Jinma Overheating problem!

    Do you have a coolant recovery system connected?
  4. Replies
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    Re: Nortrac 25XT with Backhoe - BEWARE!

    Caterpillar manuals are very thorough.
  5. Replies
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    Re: Turbocharging a Jinma 254 Build (Y385)

    Is that the same as saying you are monitoring Δ-T's? The difference between radiator inlet temp. and coolant pump inlet temp. This should not vary more than 12░ to 15░ F to reduce thermal shocking.
  6. Replies
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    Re: Turbocharging a Jinma 254 Build (Y385)

    Remember that too much coolant flow will not allow coolant time in residence within the radiator to cool. Have you calculated your BTU absorption /dissapation?
  7. Replies
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    Re: Nortrac 25XT with Backhoe - BEWARE!

    A flat level surface is your friend, but he's not always around to help.
  8. Replies
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    672

    Re: Nortrac 25XT with Backhoe - BEWARE!

    All linkage should be slack.
  9. Replies
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    Re: Nortrac 25XT with Backhoe - BEWARE!

    I really don't see what the problem is. Just set the hoe down in equalibrium rest (no weight bearing on the tractor), put a wrench on the bolt head and a 3/4 drive socket on the nut. If that won't...
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    Re: Nortrac 25XT with Backhoe - BEWARE!

    I think I know of the dealer you're speaking of. The greatest problem with these little dozers has been the dealer prep and the owner's attention to maintenance. Also the demographic, largely...
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    Re: Nortrac 25XT with Backhoe - BEWARE!

    "Too many people" probably don't own one. I have 700 trouble free hours on mine. Bought new in '05. Comparing a Yuchai to a Cat is apples and oranges. I was a Cat field mechanic for years.
  12. Replies
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    Re: Nortrac 25XT with Backhoe - BEWARE!

    A 1/2" drive impact capable of a honest 650 lb. ft. torque? What brand is it, I gotta get one.
  13. Replies
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    Re: Turbocharging a Jinma 254 Build (Y385)

    It's why my International 6.4 liter diesel has compound turbocharging. A big one and a little one.
  14. Replies
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    Re: Turbocharging a Jinma 254 Build (Y385)

    A good primer on how governors work.
    https://www.youtube.com/watch?v=CXogtrK4g5s
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    Re: Turbocharging a Jinma 254 Build (Y385)

    Excellent. You won't melt any valves. Good job.
  16. Replies
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    Re: Turbocharging a Jinma 254 Build (Y385)

    Were you monitoring EGT's? Just curious if there was much of an increase.
  17. Replies
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    Re: Turbocharging a Jinma 254 Build (Y385)

    Since you are only going to have minimal boost pressure, you will overcome and eliminate the parasitic natural aspiration draw, and that will give you a net gain of about 10 HP at rated engine speed,...
  18. Replies
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    Re: Turbocharging a Jinma 254 Build (Y385)

    All the governor does is control the rack in relation to engine speed vs. throttle setting. The rack rotates the plungers within the barrel which are lifted by the cam. Since there is no droop...
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    Re: Turbocharging a Jinma 254 Build (Y385)

    Please post a pic of that "smoke screw". If you're thinking of an aneroid valve, these pumps don't have them. The cam lift and the helix on the plunger is what regulates the fuel to the injectors....
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    Re: Turbocharging a Jinma 254 Build (Y385)

    Okay, I missed the point of doing it just because you can, and for the fun factor.
    I'm just wondering though, what the overall cost of upgrading is compared to just buying the next size larger...
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    Re: Turbocharging a Jinma 254 Build (Y385)

    That's a cute little turbo.
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    Re: Turbocharging a Jinma 254 Build (Y385)

    Since it is a compression ignition engine you will also have to adjust the timing. You cannot adjust the fuel rate from the governor, you will have to recalibrate the fuel injection pump (barrel and...
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    Re: 2004 Nortrac Dozer

    In the toolbar above the text window there is a little square with the image of a tree in it. If you hover over it, it will say Insert Image.
    431980

    Click on it and this dialog box will open....
  24. Replies
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    Oil & Fuel Re: Jinma JM354 lift heat issues.

    I understand that UTF is NOT recommended for these tractors under any conditions. For hot climates most folks will use ISO AW46 hydraulic oil. I use (and highly recommend) a multi-vis hydraulic oil...
  25. Re: CBN-E314 8.8 GPM to try and conver princess auto stock pump SKU;8375404

    Is there room to rotate it 90´Ż░ on it's axis so the suction and discharge ports are on the top and bottom?
  26. Replies
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    Oil & Fuel Re: Diesel Fuel injection Pump Problems

    No fuel will come out of the hard lines unless the engine is running, but you may get some by operating the lift pump manually.
    If your injection pump sump is filling with fuel that means that one...
  27. Re: CBN-E314 8.8 GPM to try and conver princess auto stock pump SKU;8375404

    Excellent. Let us know what happens. Pictures too if possible. I think there are many folks watching this.
  28. Re: Foton 254: Anyone mod their Rad fan to a clutch type?

    Excellent, good for you, but I seriously doubt you will notice the difference.
    Consider again: A 30 amp relay for the fan, and that the startup spike will be about 50 amps, and 20 running amps for a...
  29. Re: CBN-E314 8.8 GPM to try and conver princess auto stock pump SKU;8375404

    Many equipment operators and truck fleet owners have found it futile, and not very cost effective, to try and reinvent the wheel. The ones I know, including myself, keep a stock of critical OEM parts...
  30. Re: Foton 254: Anyone mod their Rad fan to a clutch type?

    Go with Greg's idea of the electric fan. Much easier to install, and most kits include an adjustable thermostat with cut in and cut out settings. But before you do anything consider the variables....
  31. Re: CBN-E314 8.8 GPM to try and conver princess auto stock pump SKU;8375404

    Are you the least bit concerned about overloading the front axle of the tractor?
  32. Replies
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    Re: 30hp Chinese Bulldozer Parts

    Apologize for the late reply. Not sure what "spacers" and "mating plates" you are referring to. A picture would help if possible.
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    Re: 30hp Chinese Bulldozer Parts

    Sorry, I don't have that information, but if you are getting equal throw in reverse then you may have internal problems.
  34. Thread: oil pressure

    by Bob Rooks
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    954

    Re: oil pressure

    If you prefer Valvoline, use this: Valvoline.com > Products > Valvoline > Diesel Motor Oil Valvoline > Valvoline Premium Blue« Diesel Engine Oil
  35. Thread: oil pressure

    by Bob Rooks
    Replies
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    954

    Re: oil pressure

    Most everyone uses 15w-40 rated for diesel engines. Like Chevron Delo or Shell Rotella.
  36. Thread: oil pressure

    by Bob Rooks
    Replies
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    954

    Re: oil pressure

    Is your radiator spotlessly clean? Is your fan belt tight? What kind of oil are you using? How is your coolant temperature?
  37. Replies
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    Re: 2007 Jinma 284 water pump

    This is what casting sand can do. First gets the seal then the bearings.
  38. Re: Foton 254: Is it normal that their are free magnets inside my oil strainer?

    They capture small ferrous metal particles. You can epoxy them back in place. They function the same as magnetic drain plugs found in engines and transmissions.
  39. Re: Jinma 284 hydraulic pump breaks loose from drive assembly

    Lol. Me too.
  40. Re: Jinma 284 hydraulic pump breaks loose from drive assembly

    Nice to see someone from my old stomping grounds. Born/raised in Menlo Park and Redwood City.
  41. Replies
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    Re: 2004 Nortrac Dozer

    Hard to say because I don't know how many are out there in the real world. I know I wanted one really bad when I ordered my dozer but they were not available with the FEL option at that time. They...
  42. Re: Jinma 284 hydraulic pump breaks loose from drive assembly

    You may not know this, but the tang drive is very common in the industry. Dennison, Rexroth, etc. use the tang drive in some applications. Any hydraulic pump I have ever installed or worked on was...
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    Re: 2004 Nortrac Dozer

    He's a responsible owner, sounds like it has pedigree. I would grab it.
    If it has the hydraulic shuttle clutch option there will be a small shift lever on the left saddlebag with the script "F-N-R",...
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    Re: 30hp Chinese Bulldozer Parts

    Okay, sorry 'bout that. Had you mistaken for another party.
    I know the setup you have now. Check your adjustment (throw) for the reverse portion of the quadrant. It should be equal to the forward...
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    Re: 30hp Chinese Bulldozer Parts

    Wait, what? Don't you have two hydraulic pumps on the engine? Are you getting the pressure source from the tractor hydraulics?
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    Re: 30hp Chinese Bulldozer Parts

    Here ya go. Hope it helps.
    429866
  47. Replies
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    Re: 30hp Chinese Bulldozer Parts

    Does your machine have an accumulator? I think I may have asked you this before. Best way to label hoses is to take pictures with the labels on them.
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    Re: 2004 Nortrac Dozer

    If it's as good as you think it is, that's a very good price. Parts are readily available at Northern Tool, Circle-G Tractor, Keno Tractor, and others, as well as ordering direct from Yuchai.
  49. Replies
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    Re: 2004 Nortrac Dozer

    These little dozers are a ton-o-fun, but make no mistake they aren't Cats. I spent a lot of time on Cats in the early '60's. Because of their attractive price they tend to be purchased by first time...
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    Re: 2004 Nortrac Dozer

    Hi Rookie, welcome to TBN.
    Received your PM but time is tight for me today so I'll just throw this out there for now and get back to the PM later.
    This is my dozer Face Book page which includes...
  51. Re: Jinma 284 hydraulic pump breaks loose from drive assembly

    I have witnessed several instances on lube oil transfer systems where the builder had plumbed relief valves directly back into the suction side of the pump. In one of these cases the pump actually...
  52. Re: Jinma 284 hydraulic pump breaks loose from drive assembly

    Yes, those are the coupler types I now use. I can even connect a couple of applications with one hand. They cost a few pennies more but are well worth it IMHO.
    I'm not sure what SC means by...
  53. Re: Jinma 284 hydraulic pump breaks loose from drive assembly

    Not recommended to plumb the relief back into the suction. I know several have done this, but it's a great way to coke the hydraulic oil and toast the pump. And you don't even know you're doing it....
  54. Replies
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    Re: Question about coolant system

    You can install what is correctly called a coolant recovery system (available at auto parts stores for about $12.). This allows the coolant that was expelled due to expansion to automatically be...
  55. Re: Jinma 284, Y385T engine, zero oil pressure, bad pump?

    The engine oil filter is always on the pressure side of the pump. The suction side of the oil pump always has a screen that can sometimes become plugged from lack of maintenance.
  56. Re: Jinma 284, Y385T engine, zero oil pressure, bad pump?

    Could be several different things, of which I have heard of before. 1) Broken pick up tube. 2) Broken pin in oil pump shaft drive gear. 3) Broken oil pump drive shaft. I think the pick up tube and...
  57. Re: Modifying Chinese Tractor to fit Front PTO options like snowblowers etc.

    I would toy with the idea of just hanging a Prince PTO pump on the rear and running a couple of hoses to the front with a simple motor control valve. Isn't the radiator a major interference?
  58. Replies
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    Re: 30hp Chinese Bulldozer Parts

    The cover plate #8 and the end plate #7 turn at the same time and direction, so no friction. Note the splines and bolts.
  59. Replies
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    Re: 30hp Chinese Bulldozer Parts

    F'n wireless comm.
  60. Replies
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    Re: 30hp Chinese Bulldozer Parts

    So what does all that mean? It means you can probably upgrade to seven discs if you want to. Two extra discs and one extra plate. Compare stack height.
  61. Replies
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    Re: 30hp Chinese Bulldozer Parts

    Well, I will acquiesce for the sake of brevity.
    Metal against metal without lubrication is wrong. Here is the Yuchai steering clutch. The early steering clutches had riveted friction media, the...
  62. Replies
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    Re: 30hp Chinese Bulldozer Parts

    Guilin was acquired by Yuchai in the mid '90's, and not much has changed in the running gear and undercarriage since then. The Northern Tool Nortrac dozer is a re-branded Yuchai with a few bells and...
  63. Re: FEL Fitting size / specification questions.

    That 90 degree fitting you seek is part of a complete hose assembly which should be available through any Jinma tractor dealer.
  64. Replies
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    Re: 30hp Chinese Bulldozer Parts

    Wow! You didn't have to take it down that far just for steering clutches and brake bands. Yes, all the friction material has become saturated for sure. Not worth the time to try and clean it, because...
  65. Replies
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    Re: 30hp Chinese Bulldozer Parts

    If you have a F-N-R direction control valve on your left saddlebag then that "reservoir" is your shuttle clutch. It consists of two compact planetary drives, two clutch packs (a forward and reverse),...
  66. Re: FEL Fitting size / specification questions.

    What are you trying to do?
  67. Re: FEL Fitting size / specification questions.

    Seriously? You plan on repowering? I want to see pictures of that.
  68. Re: Can anyone tell me what conversion fitting would fit my current valve from this s

    That appears to be a 14mm ORFS on the power beyond port. What are you trying to do?
  69. Replies
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    Re: 30hp Chinese Bulldozer Parts

    Do you own this tractor?
    Might be interested in this thread: steering clutch on Guilin Jlw-d2 | Bulldozer & Excavator Operation and Maintenance | Chinese Tractor Owners Association
  70. Replies
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    Re: 30hp Chinese Bulldozer Parts

    You need a parts manual, there are exploded views in it.
    The transmission and bevel gear case (what you are calling a "gear box") have a common sump. It takes quite a bit of 80w-90 gear oil....
  71. Re: FEL Fitting size / specification questions.

    Quicksandfarmer is correct, but you can get adapters to convert to JIC at Affordable Tractor.
  72. Replies
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    Re: Farm Pro 2430 Ty395i engine overheating

    Just an FYI: There have been many instances where casting sand left in the engine block and cylinder head has eroded away coolant pump impellers, grooved impeller shafts, and destroyed impeller shaft...
  73. Replies
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    Re: Farm Pro 2430 Ty395i engine overheating

    Yes, that is true. That is the reason why people put furnace filter media in front of the radiator. It actually helps to keep the radiator clean.
  74. Replies
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    Re: Farm Pro 2430 Ty395i engine overheating

    Hope you aren't using straight water in the cooling system.
  75. Replies
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    Re: Farm Pro 2430 Ty395i engine overheating

    Try cleaning your radiator. You should be able to see light through all of it. Put a furnace filter in front of the radiator to catch the chaff, and put the thermostat back in - it also helps to cool...
  76. Re: lost prime 2 times today. while running mowing

    So how does it feel to know that you are not alone anymore. :laughing: :thumbsup:
  77. Re: lost prime 2 times today. while running mowing

    One of the O-rings that Greg mentioned (there are two) is on the piston rod that connects to the cam roller. It is supposed to prevent cross contamination of the injection pump oil with fuel. The...
  78. Re: lost prime 2 times today. while running mowing

    The guys I know of have yanked that in-tank screen out and discarded it. It serves no practical purpose if you can't get to it to clean around it. There is a very fine screen in the top of the...
  79. Re: Convert Chinese Backhoe to Prince BH Control Valve Assembly?

    Sweet! Totally looks like plug 'n play.
  80. Re: Convert Chinese Backhoe to Prince BH Control Valve Assembly?

    Very nice looking.
  81. Re: Convert Chinese Backhoe to Prince BH Control Valve Assembly?

    I think Ronald has the market cornered on those fittings. I bought mine from a different source years ago and they no longer have them. Good catch. Glad they are still available.
  82. Replies
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    Re: what oil to use Rhino 324

    It would really help a LOT if you parked it under cover of some sort. That way rain water wouldn't find it's way into the transmission, and you would never have to change the oil.
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    Re: Jinma 354 Hydraulic pressure

    1) Yes.

    2) No, but might be interesting to watch. Please re-read my post.

    3) Yes. Please re-read my post.
  84. Replies
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    Re: 30hp Chinese Bulldozer Parts

    Rarely do ammeters fail. If you are blowing fuses I would look closer into your wiring. Check the wiring schematic in the operators manual, it's really very basic.
    Yes, the dozers are over powered...
  85. Replies
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    Re: 30hp Chinese Bulldozer Parts

    The red LED on the voltage regulator serves the same purpose as the red light on the gauge panel - it indicates there is power to the alternator field circuit. Both of these lights are on when the...
  86. Replies
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    Re: Jinma 354 Hydraulic pressure

    This has been an ongoing issue with some Chinese tractors, and not owned solely by Jinma. The simple solution is to connect a hose to the vent and run it up shoulder high (as you're sitting in the...
  87. Re: Convert Chinese Backhoe to Prince BH Control Valve Assembly?

    My calculations come out like this:

    10 ml/r @ 2,000 r/m = 20,000 ml/min = 5.28 gpm. That is a lot of volume going through a 1/2" ID hose with a 2,000 psig potential behind it. That's almost...
  88. Re: Convert Chinese Backhoe to Prince BH Control Valve Assembly?

    Steve, the rating on the pump is 10 ml/r = ten milliliters per revolution. RPM is stated as r/m or r/min. I think you'll find the pump is rated somewhere around 7-1/2 gpm, which will be plenty for...
  89. Re: China Tractor alternator wiring? One terminal not labeled

    What color and size is the wire? Is the alternator connected to the voltage regulator?
  90. Re: Convert Chinese Backhoe to Prince BH Control Valve Assembly?

    Also, I know the Prince valves are available with power beyond, not sure about the Chief brand. Also didn't notice a relief valve on the Chief, may not be included or an option. Chief valve makes no...
  91. Replies
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    Re: 30hp Chinese Bulldozer Parts

    Hi Dan,

    I have parts and operator's manual for your machine. PM me your email addy and I'll shoot them out to you when I get back to town.
    You have the correct oils in the machine so far. ISO AW...
  92. Re: Convert Chinese Backhoe to Prince BH Control Valve Assembly?

    It is just a solenoid operated double acting spool valve. It's source is the power beyond port. Almost all excavators have them.
  93. Re: Convert Chinese Backhoe to Prince BH Control Valve Assembly?

    In all fairness Steve, I must admit that I sold the backhoe in favor of an excavator w/a thumb that has four buckets and a rake.
  94. Re: Convert Chinese Backhoe to Prince BH Control Valve Assembly?

    Greetings Steve.
    When I changed my dozer hydraulics over to US made hydraulics I used Prince and Brand components.
    You will notice a difference in the amount of effort required to move the valves,...
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    Re: farm pro 2425 alternator

    Good to know for the next project - a 12 volt positive ground alternator with a 7/8" wide belt.
  96. Replies
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    Re: Y385T - Fuel delivery problem

    I pop test brand new and reman injectors. You'd be amazed how many bad ones turn up.
    Nope, there is no way you can turn the cam by hand.
    I was assuming (my bad) that you have checked the valve...
  97. Replies
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    Re: White Smoke Jinma 254

    This is an observation that is noted as part of the pop testing procedure.
  98. Replies
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    Re: Y385T - Fuel delivery problem

    If you swapped out the barrel and plunger assemblies and there is no difference, and you say all the injectors are "good", then there is only one explanation. That cam lobe in the injection pump is...
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    Re: White Smoke Jinma 254

    That would be a white/grey smoke. Much darker in opacity. Also if that condition exists there would be a pronounced knocking (hydraulic locking) for the first few revolutions.
  100. Replies
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    Re: White Smoke Jinma 254

    Bahahahahaha!
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