Quantcast
Jump to content


Rear differential lock won't turn off

Retired Plumber
 Share

Recommended Posts

Ben1098 Enthusiast

Ben1098

Posted
Posted

Go to the front diff.  2 connectors......Key Off......pull both connectors......Key ON....light go out or stay on?  Goes out, the front diff switch encoder is in 4WD position.  Light stays on, chase a ground in the harness.

You need to determine what selection position the front diff RACK slide gear selector in in.......You might possibly be in 4WD all the time.  Problems seen were a corn stalk tearing the harness, trash in the switch encoder, busted nubbin o. the rack, Critter eating the wires (insulation).  You just have to look see.  Info is to help guide in the search for the reason.

Raise ALL 4 wheels off the ground on jack stands. N for shift lever position/2WD for diff lock buttons/lever. 

Turn rear wheels one side at a time....turn together but nothing on the fronts.

Repeat on the front wheels for the 2WD position.......fronts turn freely.

3 and 4WD positions.....each front will lock to rear AND with the 4WD locking the fronts together along with the rear.

Go underneath Key ON but Motor not running and listen (at the front diff) for the little gear motor's short running time to change for the 2,3,4 selected.

If the rack and pinion RACK NUBBIN is busted....it gets tricky to replace and resync the rack position and motor stopped positions.  Remove the plastic gear changer housing and look at the rack that slides back and forth (L-Middle-R-) and selects 2,3,4WD functions.  Slide the rack with a finger and have someone turn the front wheels to determine if working.  Reassy......Easiest to "sorta center the rack position" in the diff.  Actually, slightly off center is what you want but I forgot which side to move it about a tooth distance  R or L to work the best.  Diff oil and O-ring to seal on the housing nose normal care in reassy.

 

 

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
 Share
Go to topic listing

  • Similar Topics

    • Bryan g
      Coleman UT400 shift issues , grinding .
      By Bryan g
      We see a lot of the UT400 with shift problems, not going into gear, popping out of gear, grinding etc. There  is a bulletin Im sure everyone has saw about adjusting shift cable.  That dont always fix it.  I went round n round with coleman  on couple units. We are a Coleman warranty repair center"AFS Small Engine Repair "   I told them shift lever does not have enough travel .  No amount of cable adjustment  will increase travel . I  extended lever with piece on flat  iron by 3/4 of inch .  This gave shifter enough travel to properly engage into gear completely .  Last couple units to come in for this Coleman sent me a modified shift lever, with longer travel . Problem solved! Also , heads up if you get any new unit ,,,go over and check it out,  grease  all zerks, check air filter for being in backwards, check wiring harnesses for rubbing on rotating parts,  brake hose  routing , make sure not touching exhaust .  These are just  few of the more common failures I see .
    • dman66
      2018 Coleman UT400 Trans keeps popping out of forward
      By dman66
      My buddy has a ut400 that the forward gear keeps popping out of gear. She only has like 400 miles on the odometer .the shift cable has been adjusted and the shift lever has been updated / modified. All other gears are good. Is there an internal detent cam or something that wears out or shift fork that can be replaced ? Or is there some other magic that I can perform ? Looks like the engine needs to be split.
    • camojay
      Hisun Sector 450 (2021) - help diagnose rear diff issue (short video included)
      By camojay
      When we first heard the noise, we immediately stopped driving it...at first we thought it might be a linkage issue, but after further inspection looks like the sound/jolting is coming from the rear diff. Took a video below...
      Anyone know what is creating the diff to skip/jump like this? We drained the diff oil and didn't look terrible, no metal.
      Other info that may be useful:
      1400 miles on it
      Recently tightened the E brake
      P.s. never posted on this forum before, let me know if the video does not work
      20240817_133539_1.mp4    
    • Homeowner A
      Coleman 400 cut out when hot under load ideas?
      By Homeowner A
      Have a Coleman UTV 400 that cranks, runs, drives well until it gets warm and is put under load.  Light throttle or full throttle it doesn't bog, but it will cut out mid throttle if you move the pedal quicker than it seems to like for example when you're getting ready to go up a hill, but if you immediately floor it, it will do just fine and not cut out.  It's random if and when it's going to do it, but is consistent in that it happens only when hot/full operating temperature.  I've replaced the injector twice, same with the spark plug and tried different heat ranges (NGK 7,8 and 8 iridium), replaced the fuel pump, adjusted the valves, checked air filter which is like new, changed the oil, replaced the fuel filter.  No check engine light.  I don't have a code reader for this.  Initially I thought it might have a head or head gasket issue as when I got it, the oil was over full, very runny like water milky and it was smoking.  I've changed the oil since then twice to clear and clean everything out, and it seems to be good.  Coolant stays the same level and so does oil with no changes in consistency or need for adding more. Had I think 7-9 miles when I got it and now has about 77.  What should I try or consider next?  
    • Homeowner A
      Coleman UT 400 Grease Points?
      By Homeowner A
      Is there a diagram of all of the grease zerks for a Coleman UT 400?  Mine squeaks like crazy and want to try and remedy it.  

UTV FORUMS

MORE SECTIONS

FOLLOW US ON

GET IN TOUCH

  • Automotive Webmaster
×
×
  • Create New...