Ford Super Duty (1999-2016) :: 2005 F350 - Vacuum Leak - Manual Locking Hub?
Dec 18, 2013
So I have an 05 f350 5.4 with the shift on the fly and the auto/manual locking hubs.. I already know I have a leak with the vacuum and I just use the hubs manually, then shift on the fly to activate the transfer case.
I went to use the 4wd the other night in a snow storm and I have no 4wd, light on the dash comes on and i can hear the transfer case clicking in when i hit the switch between 2wd and 4wd.
So I got under the truck while it was on the ground and manually locked the passenger side, Then tried spinning the axle and it wont spin freely, so obviously its locked.
Tried the same thing on the driver side and the axle spins freely while the hub is locked, So obviously the locking part of the hub is no good... So i guess my question is, even with just 1 wheel locking in the front, shouldn't I pretty much get 3wd? or am i missing something...will it not engage at all because both sides arent locked?
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When I put my 06 f350 in 4x4 my ac defaults to defrost. I assume this means a vacuum leak. My question is, is the white tube supposed to be open for air intake or plugged off with something?
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I have a 2005 f350 with the power stroke I went through the hole vacuum system all new hubs, seals, vacuum actuator and fixed it all now I'm having the reverse problems everyone has my hubs are locked all the time as soon as I plug in the vacuum actuator the transfer case is still in 2wd and will switch 4x4 and work and disengage but the hubs are always in unless I unplug the actuator ...
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On my 05 350, I noticed the other day that my 4wd wasn't working, when I needed it of course. I quick test this morning and I discovered my PS hub is not locking in. I've read a lot of posts about it being the opposite, the auto portion causing a problem. In my case, it won't lock in in auto or manually turning. I can lock it in, spin the wheel and the axle shaft isn't turning. The pressure is the same as the other side, not too loose or too stiff. Can I pull the hub assembly off and rebuild it? I watched a video about that, but not sure on how my issue would allow me to work on it.
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I just ordered '00 F250 SC 4x4 SWB XLT with the factory standard manual hubs. The hubs show up on the vehicle order confirmation as code "21M MAN LOCKING HUB". I can't find this code in the ordering guides anywhere but kbb.com shows this code as "Manual hubs delete. Required with 213 shift-on-the-fly". I want the manual hubs. I think ##### is incorrect. For my piece of mind, could someone who has also ordered the factory standard manual hubs verify that the code is indeed 21M. And for those who ordered shift-on-the-fly, could you verify that 21M does NOT show up on your order confirmation...
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I recently came a cross a no start issue with my truck. It is 2005 ford f350 6.0 ... Found out I have a leak in the high pressure system. When I was taking out the bolts out from the manifold I stripped out two bolts. I know ford part # w301383 is the ford bolt. But I was thinking why use that same bolt and had have that issue again later.
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I've noticed my front axles are rotating all the time even when the hubs are in auto and supposed to be unlocked when in 2wd. Is there a rebuild kit for these so they will unlock the axles or do I need to buy new locking hubs?
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I have a 2013 F250 which has both the Manual and auto locking hub feature. I tried to plow my driveway this morning and after making one pass I put the truck in reverse and could not back up my steep driveway. The truck is showing locked in 4x4 on the dash, the 4x4 control is in high lock but the front wheels will not turn. It has been very cold here lately (-30) and I'm wondering if the vacuum lines for the auto locking hubs have frozen. I have switched the control out of 4x4 and back in several times, and it does lock in again, but as soon as I put the truck into reverse, they unlock again. The hubs are covered with ice and snow right now so I have not yet tried to manually lock them.
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How to diagnose a vacuum leak without a vacuum leak diagnostic tool.
My ESOF won't engage, AC/heat blowers default to defrost - classic symptoms. And while we can leave without AC/heat, we really need the ability to engage 4x4 low, especially as we get higher into the Andes and the roads unsmooth.
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I just purchased an F-350 with manual locking hubs. I am unsure if I can keep these locked in for part time four wheel driving or I need to unlock them each time I go back to two wheel drive?
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I have a piece of a warn locking hub that is stuck in the wheel hub. It is stuck in a Ford F-350 super duty SRW 6.8 V10 with a Dana 50 8 lug front axle. Everything seems stock, but we bought this beast late in its life. I have removed the locking hub cap, the inner locking gear, and the metal retaining ring that holds the outer gear in place. The other side just falls apart as it should at this point.
I have tried building a custom puller utilizing the 6 hex cap screws (that attach the locking hub cap) to pull in on two 1/8" thick c channels held off with a 1/2" bolt pushing in the middle of the c channels on the axle. In one case, I sheared off the bolt, and bent the c channels. I tried it again and that time broke several of the hex cap screws off.
I have ran through penetrating oil, wd-40, propane (for a torch) and carb and brake cleaner as I tried heating up the hub while applying penetrating oil and letting things sit, then spraying out rust and such with carb or brake cleaner to loosen things up, then repeating the process over and over again. I have done this process several times. It worked on the center where the axle goes through the inner gear, so now the inner gear is now loose from the axle. But the outside is still suck like no other.
Lightly hitting on it with a 3lb sledge to crack something lose has done nothing, and left me struggling not to beat it much harder with a bigger hammer with a longer handle.
As a note, it took weeks to get the center locking gear to fall out after doing the oil, heat, and spray cleaner process, then driving with it locked in, and it took two attempts and hours to get the cap off from stuck hex cap screws, several which I had to drill out in the end after even an impact screw driver would not work. The U-Joint is bad, and I can't lock in the 4WD which is problematic at the dump and on job sites when it is muddy especially when we are towing a maxed out 5k single axle trailer that wants to dig in to the mud too.
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I have recently developed a vacuum leak on my 2002 F-350 V-10 under the passenger side of the dash. It is only audible when I am accelerating moderately to heavily or when the truck downshifts going up a hill. None of the vehicles HVAC or ESOF functions seem to be affected by this leak from what I can tell, but it's rather annoying to listen to this loud sucking noise every time I hit the gas moderately hard such as climbing a hill or merging onto the freeway. I don't know how I could search for this leak since it only happens when I'm driving and accelerating and not at a stop. What might be going on or where I should begin my search?
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I have a 2004 F-350 diesel. My vent selector is always on defrost so I suspected a broken hose but traced all out and all seem to be fine. I disconnected the line coming from the pump to the tank and no vacuum. The pump doesn't seem to be running but it's hard to tell with the engine noise and vibration. What tells the pump to run and how can I bench check it?
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I see an oil stain on/surrounding the lower half of what I'm guessing is the PTO cover on the side of my manual transmission. (rectangular plate bolted to side of tranny) I couldn't find a gasket at any autoparts stores. Is there a gasket or did Ford just use a sealer? Would red RTV work ok here instead of a gasket? Or should I use something else?
2004 F250 SuperDuty 4x4 CC, V10, 6 speed manual tran
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I have a 2008 F350 FX4 with the 6.4l diesel, a couple weeks ago I was reprogramming the ecm and noticed the vacuum pump was running and wouldn't stop, so after a bunch of reading and testing i changed the solenoid vacuum valve. I tested all the vacuum lines and found no leaks.
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I drove my pickup on mostly dry pavement the other day with it in 4WD and the hubs locked. I got a bit of shimmy/vibration which quit after about a mile. When I got back on ice, the 4WD wasn't working. I assumed the transfer case or locking hubs had failed. Today I got it up on jack stands, put it in 4WD, and locked the hubs. Everything seems fine. What might have happened when I couldn't get 4WD to function.
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In my attempt to remove the auto locking hub on my 2000 F-350 4x4, I found that it would not slide out. I removed the retaing clip and the hub should of be able to come out with a couple wiggles, it seems to have seized inside the hub. I tapped it with a rubber mallet on all sides. Any thoughts as to other alternative methods of removing the hub locker ?
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I have a 2000 F-350 diesel and the electric vacuum pump went out. I bought a new one from napa and it would not stop pumping. Checked for leaks and found none. If I unplug the hose from the vacuum can the next day, you can hear it suck air so it seems I am holding vacuum. Problem is I burnt out the new pump in two weeks from running all the time. Bought another one and same problem.
So now I plug the electrical in and let it build up vacuum for a couple of minutes and then disconnect it so it won't burn out and I am good for days on vent controls and 4x4. If there has been a bad batch of pumps out there? I also unplugged the hose from the pump to the holding tank and put my finger over where the pump sucks and it still did not shut off.
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I replaced the sensor on top of the water pump and the gauge still doesn't work. I tested the gauge by unplugging and grounding out the wire and the gauge goes all the way up. What I can try next. I didn't get a Motorcraft sensor so I'm going to go get one of those tomorrow hoping the duralast wasn't correct even though it looked 98 percent identical to the original. 7.3 lite diesel.
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My F350 4x4 won't go into 4 wheel drive unless I get out and take them out of auto and put them in locked position and when I have it in lock mode it seams to work like it's in auto mode, when I put the switch on the dash in 2wd, it seams like it's only driving the back wheels....
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Putting in a locking axle to replace there non locking axle? Have a 2015 f350. And found a electric locking for a great price. Can this swap be done?
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