Bobcat Excavator Lost All Hydraulic Functions. What Happened and Why?

Поділитися
Вставка
  • Опубліковано 23 сер 2024
  • Bobcat 435 Excavator lost all hydraulic functions. Also same process for many other Bobcat excavators.
    To schedule a consultation: www.4tetradgro...
    www.4tetradgro...
    Tools We Use:
    Hydraulic Cylinder Spanner amzn.to/3SAlHYw
    Another Spanner Option amzn.to/3LR1JFb
    Hydraulic Seal Clasper www.4tetradgro...
    Hydraulic Seal Stretcher www.4tetradgro...
    Injector Block Off Cap www.4tetradgro...
    Bobcat Fuel Filter Bowl Wrench www.4tetradgro...
    Wrench Extender amzn.to/3Yt2yvl
    Spring Compressor Tool amzn.to/4fA030n
    Hydraulic Seal Installation Kit amzn.to/3Yrs6sV
    Hand Impact Tool amzn.to/3Sz0yOk
    Common Rail Fuel Injector Test Kit amzn.to/4dasD6T
    Injector Leak Back Test Kit amzn.to/46Btf3i
    Electrical Supplies:
    Milwaukee Solder Iron amzn.to/4dpp0cY
    Tesa Harness Tape amzn.to/3SAdG60
    X Fasten Harness Tape amzn.to/4cbItNA
    Non-Insulated Terminals amzn.to/4dp18XH
    Short / Open Tester Power Probe amzn.to/3WRdrpu
    Power Probe Master Kit amzn.to/3WPETUR
    Shop Supplies:
    Gloveworks Nitrile Gloves amzn.to/3WADdwW
    Oil Absorbent Pads amzn.to/4ckYq48
    Absorbent Pads amzn.to/3WOX64P
    Brake Cleaner (Its Really Good) amzn.to/3yse3sA
    #howididit #bobcat #bobcatrepair

КОМЕНТАРІ • 128

  • @stkqtekilla2962
    @stkqtekilla2962 Рік тому +10

    I'm amazed how clean the shirt is in the end.

  • @victoryvisiontour
    @victoryvisiontour Рік тому +7

    Good idea putting your tools on a blanket. You are quite skilled working in tight spots while recording video.
    When removing a pattern of bolts such as flywheel, head, lug nuts, etc, break one free then retighten to approx 75% of it's specified torque. Break the next one free and retighten it the same. Continue until all are broke free. This makes them so much easier to break free. That last flywheel bolt was more difficult than the others because it had 100% of the stress on it. Keeping all the bolts tight divides the stress across all of them instead of focused stress on one. Great video. Thanks for posting.

    • @flat6fever680
      @flat6fever680 Рік тому

      Interesting. Makes sense!

    • @renesolaire8319
      @renesolaire8319 Рік тому

      I don’t think so. Because that coupler is made of plastic, it’s a bit flexible. Basically each screws fight against it’s related steel insert only

  • @PawPaws_Place
    @PawPaws_Place Рік тому +3

    Man I can honestly say I was saying out loud “ooohhhhhh” as you were cranking on that Allen bolt. I had a relief of anxiety when it broke free. 😂 Glad it did for you. 👍

  • @motionclone231
    @motionclone231 2 роки тому +7

    Thanks for putting this up. Good to know the motor doesnt have to be yanked to change that coupler. I have a 337

  • @toadabc
    @toadabc Рік тому +8

    I think I have seen a unicorn. A highly skilled, knowledgeable, honest, well equipped honest serviceman who does mobile? Doesn't exist in Northern CA.

    • @6Diego1Diego9
      @6Diego1Diego9 2 місяці тому +2

      Jesus Christ why don't you ask him on a date Cynthia

  • @In2investing
    @In2investing Рік тому +4

    Wow I'm surprised at the accessibility and ease of service on these older bobcats. PS...I was holding my breath hoping that Allen head bolt wasn't going to strip. Nice job

  • @amossnowdaharleyman9179
    @amossnowdaharleyman9179 3 місяці тому +1

    Salt stains on your ball cap. Sure sign of a workin' man!

  • @matthastings7224
    @matthastings7224 2 роки тому +6

    Pretty impressive! I cant do maintenance on any of my bobcat tractors, without using expletives. Good video thx

    • @tetradgroup
      @tetradgroup  2 роки тому +3

      I edit out the expletives simply for the UA-cam algorithm LOL

  • @allensandven0
    @allensandven0 2 роки тому +4

    Only thing that would make this repair more challenging would be a good steady hard rainstorm with a little wind chill ? …. That always gets the more empathetic new subscribers onboard. Like Jerry’s kids who say no to that …! 😊

    • @dukeboy-6645
      @dukeboy-6645 5 місяців тому

      LOL, I was thinking how lucky he was to have a really nice day.

  • @jrac863
    @jrac863 2 роки тому +8

    Another great video from the master.We have the smaller version of this a 425 and in order to do this job we had to remove the whole 500 pound counter weight in the middle of the woods not fun

    • @flat6fever680
      @flat6fever680 Рік тому +1

      Can't imagine? How many guys? Or a machine?

    • @jrac863
      @jrac863 Рік тому

      @@flat6fever680 just 2 guys and a s185 with pallet forks

  • @normhowes2975
    @normhowes2975 3 місяці тому +4

    Amazing! Plastic gear just like a KitchenAide mixer! Made to break down while costing top dollar.

    • @barrygrant2907
      @barrygrant2907 3 місяці тому +2

      It's sacrificial, cheaper to replace than a sheared pump shaft.

    • @daleolson3506
      @daleolson3506 3 місяці тому +1

      Had it made in China to maxamize profit

    • @songweaver6076
      @songweaver6076 3 місяці тому +1

      I can't believe it's made of PLASTIC!!!!!

    • @killstrees
      @killstrees 2 місяці тому

      It has to be plastic as a sacrificial part. If the pump blows up, it will shear the coupler and protect the engine from damage. Much cheaper to replace a pump and coupler than pump AND engine.

  • @dinosshed
    @dinosshed Рік тому +1

    Easy job compared to many automotive applications. Was waiting for that bolt head to strip and knuckles into the pump. Nice work

    • @tetradgroup
      @tetradgroup  Рік тому

      I agree, I would not want to be in the automotive industry these days.

  • @fordmodela3641
    @fordmodela3641 3 місяці тому

    Awesome patients, thank goodness for people who do the work you do!

  • @Jetskijunk
    @Jetskijunk 9 днів тому

    Your know how, patience and never say die is worth a considerable hourly rate. I hope your income allows a mighty fine work life balance. I enjoy your channel immensely.
    Regards
    Kevin
    New Zealand

  • @flat6fever680
    @flat6fever680 Рік тому +2

    Awesome field fix! Just found your channel. Liked and subscribed. You sure have the mentality and strength for this job. Not for the meek. 💪

  • @gmp-garazmojapasja
    @gmp-garazmojapasja Рік тому +1

    It is really good job. I appreciate your ideas and experience.
    Thank you,
    Artur

  • @terrylundquist2646
    @terrylundquist2646 2 роки тому +1

    Enjoyed the video, again. We truly appreciate you sharing your knowledge, and all your helpful "tricks of the trade". 👍

  • @brimanco
    @brimanco 2 роки тому +2

    Great Content! Keep up the good work

  • @timschmidt1928
    @timschmidt1928 2 місяці тому

    very composed! i woud be frustrated by the lack of working space

  • @michaelwray4359
    @michaelwray4359 10 місяців тому

    Can’t thank you enough sir this is what I’ve been looking for 😊

  • @EliteSoul92
    @EliteSoul92 2 роки тому +1

    Dang didn't recognize you with that moustache

  • @robertambrose1168
    @robertambrose1168 2 роки тому

    I got a 435 Fast Track bobcat change the drive belt twice damn near have to tear the machine apart to do all that I never had your problem before don't matter what kind of machine you got you always got to work on it to keep it going

  • @kevineleven5610
    @kevineleven5610 2 роки тому +1

    Knowledge won the day ☺️

  • @firewoodsolutions
    @firewoodsolutions 2 роки тому

    That is awesome. Now I know you can mechanic in the woods, you better get ready for when I need help

  • @BUSTABR0WN
    @BUSTABR0WN Рік тому +1

    Whew! The suspense was killing me… which would break first, the Harbor Freight ratchet or the Allen head bolt.

    • @tetradgroup
      @tetradgroup  Рік тому +1

      Can't kill the old Harbor Freight ratchet 😆

  • @IndependenceIron
    @IndependenceIron Рік тому +1

    That 435 really seemed to pull down the engine when doing multi function. Is that common for those 400 series zero tail swing machines? My old 331 multifunctions and can blow relief and still never really seems to drag on the engine.

  • @greatvalleyone
    @greatvalleyone 2 роки тому

    Thank for making another awesome video, this job would take me 2 days, a bolt would strip or break or I would break a fitting or hose in the process, drop a screw and not be able to find it, or not have that special tool.

  • @robertpatey4713
    @robertpatey4713 4 місяці тому

    Hey, I’m really liking your videos. I have a bobcat E 50 excavator. Couple codes came up regarding the load sensor and I was looking to do a hydraulic pressure test looking at the manual service. You need to pretty expensive machine. I was hoping to hook up a gauge and, check the high-pressure and the low pressure and adjust it from there. What port would I hook up the gauge on the manifold side?

  • @demartinsm8479
    @demartinsm8479 Рік тому

    Nice work! Glad I found your channel.

  • @user-vk4wl9bm3w
    @user-vk4wl9bm3w 7 місяців тому

    Trick you may not know about. Always tighten bolts and nuts to break loose. Then loosen. It prevents stripping and shearing.

  • @moe2470
    @moe2470 3 місяці тому

    Positrack hyd pump couplings fail at around 1000hrs when high flow is used alot.

  • @jonathantaylor6926
    @jonathantaylor6926 Рік тому +1

    Put a torch to those bolts especially if they have loctite on them.

  • @KarasCyborg
    @KarasCyborg 2 роки тому +2

    At what point do you decide to field-fix (Stay and Play) vs get a Crane and transport to a shop (Load and Go)?

    • @tetradgroup
      @tetradgroup  2 роки тому +1

      Very rare I send one back to shop. Today for instance I had a track off a T870 in the middle of a creek bed and engine would not start, 4 hours later the machine was operational and removed from the creek under its own power. I recommended the customer take to shop to have cleaned and inspected for any additional damage and to make sure no water got into fuel tank.

  • @ProtonOne11
    @ProtonOne11 10 днів тому

    Seems like it would be way easier to fix that issue if the designers used a plastic gear on the pump shaft and a metal gear on the motor side in the bell housing (or some kind of plastic coupler between two metal gears, if the pump shaft is to small to transfer the torque into a plastic part directly). Seems odd that people who design these machines don't think more about service and field repairs, especially with a plastic part that is an intended breakting point to protect the pump and will need replacement probably more than once in the lifetime of a machine if it's worked hard by the operator.

  • @Woodywater
    @Woodywater Рік тому

    I have a 329 bobcat excavator. I’m only getting 9 V to the hydraulic lock solenoids I have pilot pressure around 25 to 75 off the block were the solenoids are located. I think this is all electrical issue. I had to replace the keyless instrument cluster. I think somebody put a battery in backwards or jumped it backwards. After you placing the instrument cluster
    the machine starts but no hydraulic function.
    My question is where is the solenoid getting its power from? The armrest an instrument cluster?

  • @SS-zs3zb
    @SS-zs3zb 12 днів тому

    Where to buy the coupler plate?

  • @johnoler357
    @johnoler357 8 місяців тому

    My thumb was all brown, sticky and smelly a quarter of the way though this video. I sympathize with you brother.

  • @jeffmaclean7700
    @jeffmaclean7700 2 роки тому

    Thanks for the great video,please keep them coming

  • @jamesmerkel9442
    @jamesmerkel9442 2 роки тому

    a piece of old tuff jewing gum spacer washer so it seats it self under pressure just so & some rebounding force as well build in.

  • @MitzvosGolem1
    @MitzvosGolem1 5 місяців тому

    Many machines use the same coupler.
    Even CAT M318 .
    ASV has plastic teeth

  • @bwdiver1
    @bwdiver1 Рік тому

    I just bought a 2023 R2 E35 and the drive motor is already being replaced. They brought it to me with 3 hrs and by 20hrs drive is popping and is now in the shop. Are these E35’s any good or are they trouble? I’m hearing the 35’s aren’t that great. Dealer is slow they still have the machine over two weeks later.

  • @timbo1961
    @timbo1961 2 роки тому

    Thanks for the video- I learned something from it.

  • @skipwilson4792
    @skipwilson4792 Рік тому

    Did you say the hours on the machine ?

  • @tangoseal1
    @tangoseal1 3 місяці тому

    That little piece of plastic can handle all those tens of horsepower? Wow! I would have figured it was all steel parts with a shear bolt or something. Not plastic. Also a ljttle splurt of PB Blaster would make getting those bolts out easier but you got it without so good.

  • @therealbreakroompodcast
    @therealbreakroompodcast Рік тому

    My 435 lost all pressure today but it came with a grinding noise. Throwing metal flakes out of the bell housing. Would the metal coupler fail before the pump shaft? God i hope so

  • @Rprecision
    @Rprecision 2 роки тому +2

    That really sucks! How many hours did the machine have?
    BTW, how the hell do you stay so clean, I would be covered head to tail

    • @tetradgroup
      @tetradgroup  2 роки тому +3

      This machine had about 4000 hours on it and I believe that was the original coupler because all the bolts were in the bell housing, usually I find if a coupler has been replaced then all the bolts do not get installed because of the difficulty of getting to them. I get accused of not working all the time because I never get dirty lol.

    • @douglasjewell9324
      @douglasjewell9324 7 місяців тому

      ​@@tetradgroup, I have a question about a 773 bobcat diesel engine, looses tilt and up, down movement to the bucket, tried removing sensor but can't get it all the way off the shaft before it hits engine, any advice?

  • @kylekoskinen5976
    @kylekoskinen5976 10 місяців тому

    I have a 2004 430 ZHS with 4200 hours. Lost hydraulics while digging but machine still drives. Would this be the same issue? Thanks

  • @tpep1693
    @tpep1693 2 роки тому

    Could be raining! Ha., I'm with you.

  • @kylejones2075
    @kylejones2075 2 роки тому

    Very informative thanks for sharing

  • @jamesmerkel9442
    @jamesmerkel9442 2 роки тому

    That side sheet metal over pump compartment should turn screw remove.

  • @victorhernandez769
    @victorhernandez769 2 роки тому

    Thank you for the video.

  • @hightechredneck_0566
    @hightechredneck_0566 Рік тому

    Really appreciate your videos. I have a 2017 A770 that would give me intermittent error code 4404, Aux Controller loss of Communication. So I bought a brand new Aux controller but now I'm getting an H4423 (Aux Controller Not Programmed) error code. Does the dealer have to program these new aux controllers before they can be used?? If not, how do I program it?

  • @dumbotater2158
    @dumbotater2158 2 роки тому +2

    Unless that "plastic" coupler is like a shear pin, why in the world don’t they make those couplers out of steel. Sure, it would be more expensive, but look at the bad press they are receiving out of having to replace plastic gears!!!! Just sayin’. Well, crap, at least make them easier to repair, since they KNOW the couplers are going to fail, repeatedly!

  • @dane9175
    @dane9175 2 роки тому

    Thanks!

  • @kenlarsenful
    @kenlarsenful Рік тому

    Is the 325 easier ? I lost all hydraulic yesterday:(

  • @skylinedesignstudio723
    @skylinedesignstudio723 Рік тому

    I have this same Mini Ex ... I am by no means a mechanic and recently struggled with a hydraulic cylinder seal. To my surprise, I was able to get it all back together. After which, the Excavator worked for a couple moments, then the hydraulic system seemed to stop working. After watching your video I thought I had a solid diagnosis but it turns out my blade still works! So the question becomes, where else should I be looking? what could be wrong?

  • @VolvoGonzo
    @VolvoGonzo 2 роки тому

    Nylon.... are they meant to wear out to avoid damaging more expensive components or did they just cheap out?

    • @tetradgroup
      @tetradgroup  2 роки тому +1

      Exactly, acts like a shear pin to protect other components.

  • @darinmorgante7200
    @darinmorgante7200 8 місяців тому

    I have a 2009 323 with no hydraulics at all. The lockout light does not come on would a failed coupler cause this (because no pressure) or does that sound like an electrical problem? Any input would help!

    • @tetradgroup
      @tetradgroup  8 місяців тому +1

      The light should come on regardless, sounds electrical to me.

    • @darinmorgante7200
      @darinmorgante7200 8 місяців тому

      @@tetradgroup found a couple broken wires in the left arm rest, hydraulics are operational now! It was a tough find, wire insulation wasn't even damaged but wire was broken right through.

  • @andrewgable7273
    @andrewgable7273 2 роки тому

    Thanks for that. I learned something today. Now I can rest easy. This heat sux, doesn't it!?!! Question about my 2018 T770. Im getting error code 3532-2 on start up. It eventually goes away once the machine warms up. Thoughts?? Thx in advance!!! Check out Redmond Salt's Re-Lyt. Best electrolyte drink mix I have ever found. I hope I spelled that right. Anyhow, thanks again, stay cool and hydrated as best you can!!

  • @chrisowen9378
    @chrisowen9378 2 роки тому

    So how is the proper clearance between couplers obtained.

    • @tetradgroup
      @tetradgroup  2 роки тому +1

      The measurement is in the service manual and if you don't have a service manual for your machine then your dealer should provide the info with parts if you ask.

  • @ethansmom2008
    @ethansmom2008 Рік тому

    I miss the 'stache!

  • @brandonjones4666
    @brandonjones4666 2 роки тому +4

    Engineers… imagine if they designed with mechanics in mind.

    • @saltygamer5042
      @saltygamer5042 Рік тому +1

      Dude try a rear motor mount on a 2004 Toyota corolla 😆 this is a cake walk

    • @csettles1841
      @csettles1841 Рік тому

      I don't understand why they don't use something like John Deere has on the 650, 750s. High horsepower but they have plastic on plastic for that connection. It's 3 square pegs in 3 square holes, for both pieces. Not metal vs plastic.

    • @roblane5699
      @roblane5699 Рік тому +1

      That would cut into their company’s profits

  • @jamesmerkel9442
    @jamesmerkel9442 2 роки тому

    The finer the teeth the rounder the disk vs 6 sides or 5 sides or rounded.

  • @pigslayer106
    @pigslayer106 2 роки тому

    Hey man awesome videos. I have a 2019 e45 and the AC isn’t blowing cold anymore. Fan has strong air speed but air isn’t cold. It’s cool but not cold. Radiators on side of machine look clean. Any ideas? I didn’t see a video on the excavators ac systems

    • @tetradgroup
      @tetradgroup  2 роки тому

      Couple things on the E45, have you changed both cab air filters? Sometimes the heater valves are faulty which is located in front of the battery. You can pinch off the heater hose at valve to eliminate that as an issue.

    • @pigslayer106
      @pigslayer106 2 роки тому

      I found one filter right below right knee when sitting in cab. It looks clean. I can’t find the other filters

    • @tetradgroup
      @tetradgroup  2 роки тому

      @@pigslayer106 yeah it sucks, open side hood and look behind and right of hydraulic tank and you will find the filter cover, just pop it off and blow out filter and see if it helps.

    • @pigslayer106
      @pigslayer106 2 роки тому

      Yes you were right! That filter was clogged. I cleaned it out and blew out the vents with my backpack blower. It blows colder but still not like new. Is there anything else I can try?

    • @tetradgroup
      @tetradgroup  2 роки тому

      @@pigslayer106 pinch off that heater hose and see if that helps. Pull the whole inside cover off, just pops off and clean evaporator core.

  • @jamesmerkel9442
    @jamesmerkel9442 2 роки тому

    why would it use plastic gearing any prt crazy. If that serves a purpose then why not a double or triple plastic disk so 3 diff sets of teeth to try & catch/ grip fine, med, or coarse sanding teeth b4 it works itself out. Just need 3n1 grip teeth on the other metal prt too. 1 side 3disks other side 3n1 prt so 3 times the wear or prt connect beats no connection. Not working or broke no middle ground.

  • @michaelwray4359
    @michaelwray4359 10 місяців тому

    I have a435ag

  • @Thor-dy1xu
    @Thor-dy1xu Рік тому

    Ok, but the most important part of this repair is why did it shear the coupler? What does Bobcat have to say? : }

    • @tetradgroup
      @tetradgroup  Рік тому

      Standard repair on many different types of equipment. The coupler is designed to fail before any pump damage or engine damage could occur. After many hours and years this coupler was just worn out.

  • @matthembree1690
    @matthembree1690 Рік тому

    So what if you can still use the blade?

    • @tetradgroup
      @tetradgroup  Рік тому

      Then I would start with electrical issue

  • @usalife1978
    @usalife1978 2 роки тому

    I have e 35 excavator and only have about 75 psi of pressure
    Any idea what should I check for ?

    • @tetradgroup
      @tetradgroup  2 роки тому

      Could be lots of things, really depends on the symptoms.

    • @usalife1978
      @usalife1978 2 роки тому

      @@tetradgroup
      What should I check for ?

  • @jonstefanko7854
    @jonstefanko7854 2 роки тому

    i have a 430 i would imagine its the same job?

  • @edgarchavez3
    @edgarchavez3 Рік тому

    Why would my 435g die after putting the excavator under load?

    • @tetradgroup
      @tetradgroup  Рік тому

      Either engine is weak or pump not set up correctly 🤔

  • @tpep1693
    @tpep1693 2 роки тому +1

    One thing about these machine's, Not Friendly to work on!

    • @rearspeaker6364
      @rearspeaker6364 2 роки тому +1

      no manufacturers mini excavator are easy to work on.

  • @danielemanuelsson4233
    @danielemanuelsson4233 Рік тому

    how lucky that you don't have to own old machines.

  • @zekesmith538
    @zekesmith538 Рік тому

    Plastic by design or would metal be better…

    • @tetradgroup
      @tetradgroup  Рік тому

      Plastic by design to prevent possible damage to much more expensive components.

  • @royamberg9177
    @royamberg9177 2 роки тому

    Nothing easy about service work. I do plenty of it

  • @FrederVision
    @FrederVision 2 роки тому

    For a sacrificial part like that they make it too hard to get to. Bobcat sucks.

    • @tetradgroup
      @tetradgroup  2 роки тому

      Not just Bobcat but most manufactures use the exact same style coupler. Its like a built in shear pin to protect the pump and engine. Its actually easier on Bobcat than say CAT which requires the engine to be removed.

    • @skidoojosey6037
      @skidoojosey6037 Рік тому

      Removed! That would be impossible. This mechanic is a genius. If I had the talent he has in his pinky finger, I would be very happy.

  • @rvadventures
    @rvadventures Рік тому

    After watching your videos I realized I'm not buying bobcat, matter of fact I wouldn't take one for free. These things are horrible.

    • @tetradgroup
      @tetradgroup  Рік тому +1

      As a technician for 25 years I have worked on all makes and models, me personally, I wouldn't own anything but a Bobcat. All machines have issues and Bobcat is by far the easiest to work on in my experience. Thanks for watching!

    • @skidoojosey6037
      @skidoojosey6037 Рік тому +1

      Wow! Now that’s an endorsement!!!

    • @rvadventures
      @rvadventures Рік тому

      @@tetradgroup I watch Andrew, and few other channels and they all say stay away from bobcat. Drives are bad,hydraulics are bad and electrical is a mess. We see cat and tecumseh but more deere than anything on most road construction vey little bobcat.

  • @cyumadbrosummit3534
    @cyumadbrosummit3534 Рік тому

    For putting plastic in heavy equipment driveline Bobcat engineers should be cancelled.

  • @JohnSmith-ug5ci
    @JohnSmith-ug5ci 3 місяці тому

    Bad design.

  • @3406Accert
    @3406Accert Рік тому +1

    That's the most dumbed down Chinese knock off machine in the whole Land Stupidly low budget Chinese part's supplier's , these are simply Chinesedogs and not a blobcat at all. Never would l even rent one let alone own one.