Thank you for the great video. I have a 1989 4x4 2600i. . It has the REW switch on it , so you are saying for me to get better Gas mileage I will need to put manual locking hubs on it correct. Also when cranking the truck a lot of times I hit the RFW switch and the light comes on but nothing happens, is that how it should be until I pull it down into 4l or 4h then I'm in 4x4.
Yes manual hubs will get you better fuel economy. The rfw light should come on when you stop and put it in 4 high or 4 low the light will not come off until you hit the rfw switch when you hit the switch it disengages the front axle.
Awesome help. I am working on my second B2600i 4x4. Which switch on the transfer case sends power to the vacuum solenoid to engage the front differential?
I am thinking of putting 255s on my '89. Are you saying that you will not be able to shift between 2 and 4hi while moving with larger tires? Why would that be the case if all 4 tires remain the same size? Also, other than junkyard do you know of any aftermarket lockout hubs for these trucks? I'm sick of killing CV boots.
Hey I have 93 b2600i, I just got it and when i would engage 4x4 the truck would defintaly go into 4x4 cause I could see the front wheels spinning on snow, but it would make a whirring, rubbing noise. I then proceeded to drive around while in 4x4 until the front locked up and started to bind . so now im wondering if the diff may have grenaded or could it be a bad cv axle. the truck operates normal in 2 wheel with the rfw off
Only one side is connected to the diff when in freewheel but I think without both axles locked the ring gear won't move it just turns the unlocked axle the opposite direction
Unrelated question, what differentials does my 1989 mazda b2600i 4x4 manual transmission have? I want to install gears and lockers but I do not know which ones I need for those two differentials. Can you please help me with that? Thank you in advance. 😊
I need a little help. I’ve got a 1991 Mazda B 2600i manual transmission. The locking mechanism randomly tries to engage when I’m driving. Sometimes the 4 x 4 light will come on the dash randomly, and other times the actuator tries to engage. Is there something I should look at first to fix this issue? When I hear it starting to engage when I’m driving, sometimes I can hit the button and it will disengage, other times I just have to pull to the side of the road and listen to it violently engage. Thanks.
@@WorldScienceTV any insight if the this switch is something that I can find at a parts store, or is it becoming too obsolete and I’m gonna have to find it on a junk vehicle?
Having problems again with the 4x4 trying to engage at 70mph . Going to take your advice on the locking hubs. Unfortunately my 92 mazda b2600i 4x4 is 26 spline and I can't find any support for that ? Do I have an oddball?
Are you saying that if you remove the locking hubs that you can disengage the actuator manually? And if so, do you know if it's possible on a 1990 b2600i model?
I just bought a b2600i 4x4 model and it seems to be getting really bad gas mileage and the transmission seems to be shifting a little clunky from 1st to 2nd gear. The R.F.W. switch light does not come on when I shift into 4x4 so I'm wondering if the switch doesn't work and if the front wheel mechanism is staying locked. So I want to know if I can manually unlock the R.F.W. lock system.
Simplest way to completely bypass everything is to run a vacuum hose from your manifold down to the four-wheel-drive actuator on the axle and you can either engage or disengage it by which side of the actuator you hook the vacuum to
I having trouble with this truck hoping maybe you could help me out. Trying to change the rotor but it seems like I need to remove the entire hub assembly including the wheel bearing. I'm having a hard to removing the locknut out. It's a 2 prong about 1.5" can't seem to find that type of tool even called mazda dealer. Any clue? (Got a 6 lugs version)
You pull the two 8mm head bolts out then you pull the snap ring off the cv axle then you pull the lock plate off with all the holes in it then you are at the lock nut that you speak of. There is four holes two of them have threads and two of them don't. The two that don't put a large screw driver in the edge of the hole and aim it counter clockwise and tap it with a hammer it should back off no problem. The stock tool is called a spanner wrench I've never seen one for this truck
Hello there, I have a small leak coming from my transfer case on the passenger side where the CV axle mates to the transfer case. Is there a seal there that I can replace or is it just the cv axle itself? I've found "transfer case output shaft seal" and "transfer case input shaft seal" online but the diagrams are either non-existant or useless to tell where these seals actually go. Your help would be appreciated.
@@bluGill89 was there any vacuum on the lines. you must now check for vacuum at the two lines you should be able to manually switch the actuator on the axle.
Hi I am having problems starting my 1993 Mazda B2600i when the engine is warm. When cold it cranks for a while and eventually starts and revs high. When warm it revs low and quickly dies or doesn't start at all (does not respond to gas pedal). Any ideas?
At any point in time do you get power out of the engine enough to drive up a hill. The number one thing first to check is always the computer on this vehicle they have a 99.9% failure rate and even rebuilt ones will be bad right off the shelf once this is confirmed that your computer is good or not then we can proceed.
My 92 mazda bb2600i 4x4 indicator senor is broken but i cant find it anywhere do u knw the exact name or do u have a part #..my 4x4 light stays on cause the sensor is broke pls help
The switch on the dash have you pushed it to disengage the 4x4. We need to find out what part is failing. The switch on the axle works if you’re light is on on the dash. Is the actuator moving on the front axle. Does the actuator have vacuum to the in engagement or disengagement side of the actuator. Then the vacuum solenoids that controls the actuator on the inner fender behind the battery do they have power going to the engagement solenoid this is the key point to start with your voltage meter.
@@WorldScienceTV i had my clutch replaced and the mechanic broke the wires off from the 4x4 indicator sensor by accident (don't know how he did that)so i have to replace it but i cant seem to find the part...thats why the 4x4 light is constantly on
If you download an app called gumtree this is the equivalent to Australia’s craigslist there is one listing for a hub assembly with the four-wheel-drive hub on it under search (b2600 hub)
I dealt with a similar problem check to see if the cable came off of the transmission first then put a few gallons of atf in it way over the full mark to see if the
Enjoyed watching! Thanks for the information and take care.
Thank you, you are good at explaining things.
Cant thank you enough! Mazda Jedi that's for sure.
Your definitely welcome if you need help just ask
For the locking hubs how many spline is the 92 mazda b2600i 4x4?
Also my motor is getting tired 385,000 miles on it. Thinking of a cummins diesel crate motor . Any advice you have would be greatly appreciated.
Thank you for the great video. I have a 1989 4x4 2600i. . It has the REW switch on it , so you are saying for me to get better Gas mileage I will need to put manual locking hubs on it correct. Also when cranking the truck a lot of times I hit the RFW switch and the light comes on but nothing happens, is that how it should be until I pull it down into 4l or 4h then I'm in 4x4.
Yes manual hubs will get you better fuel economy. The rfw light should come on when you stop and put it in 4 high or 4 low the light will not come off until you hit the rfw switch when you hit the switch it disengages the front axle.
Awesome help. I am working on my second B2600i 4x4. Which switch on the transfer case sends power to the vacuum solenoid to engage the front differential?
Could you reiterate on using an OBD2 computer and harness from a newer bravo out of AU? I'm having difficulty finding any info on the web.
There is no information on the web about it you would have to call a wrecking yard in Australia and have them send you the material that you need
Do you know if the rfw has constant vacuum to the the disengagement side when in normal 2wd operation
i do not at this time if i get a chance i will check
Good info, thanks for sharing.
any time
I am thinking of putting 255s on my '89. Are you saying that you will not be able to shift between 2 and 4hi while moving with larger tires? Why would that be the case if all 4 tires remain the same size? Also, other than junkyard do you know of any aftermarket lockout hubs for these trucks? I'm sick of killing CV boots.
good information. nice channel. new friend here supporting your channel. you know what to do. thanks in advance.
Thanks for watching
i watched your content you realy need to be talking to the camera.
Hey I have 93 b2600i, I just got it and when i would engage 4x4 the truck would defintaly go into 4x4 cause I could see the front wheels spinning on snow, but it would make a whirring, rubbing noise. I then proceeded to drive around while in 4x4 until the front locked up and started to bind . so now im wondering if the diff may have grenaded or could it be a bad cv axle. the truck operates normal in 2 wheel with the rfw off
First is yes major damage in either diff or transfer case. And next is gear radio maybe someone put a diff off a automatic in it
@@WorldScienceTV when its in 2 wheel drive and the rfw is off would the cv axles still rotate which then would rotate the ring gear
Only one side is connected to the diff when in freewheel but I think without both axles locked the ring gear won't move it just turns the unlocked axle the opposite direction
Very detailed
Unrelated question, what differentials does my 1989 mazda b2600i 4x4 manual transmission have? I want to install gears and lockers but I do not know which ones I need for those two differentials. Can you please help me with that? Thank you in advance. 😊
Hey I am looking for information about this truck. Planning on getting one soon.
What do you want to know
@@WorldScienceTV Honestly everything that I might need to know and more.
i sugest you watch all my b2600 play list th-cam.com/video/869H8hD3u7U/w-d-xo.html
@@WorldScienceTV You have a video for very problem I may have. Thank you!
Also what do you think of a 1991 Mazda B2600i 5 speed manual 4x4?
I need a little help. I’ve got a 1991 Mazda B 2600i manual transmission. The locking mechanism randomly tries to engage when I’m driving. Sometimes the 4 x 4 light will come on the dash randomly, and other times the actuator tries to engage. Is there something I should look at first to fix this issue? When I hear it starting to engage when I’m driving, sometimes I can hit the button and it will disengage, other times I just have to pull to the side of the road and listen to it violently engage. Thanks.
There’s a short in the switches on the transfer case
@@WorldScienceTV any insight if the this switch is something that I can find at a parts store, or is it becoming too obsolete and I’m gonna have to find it on a junk vehicle?
Crawl underneath there and check the wiring first make sure you don’t have to bare wires touching each other
Having problems again with the 4x4 trying to engage at 70mph . Going to take your advice on the locking hubs. Unfortunately my 92 mazda b2600i 4x4 is 26 spline and I can't find any support for that ? Do I have an oddball?
I found this set of hubs on eBay
www.ebay.com/itm/115326973726?mkevt=1&mkcid=16&mkrid=711-127632-2357-0
Are you saying that if you remove the locking hubs that you can disengage the actuator manually? And if so, do you know if it's possible on a 1990 b2600i model?
I just bought a b2600i 4x4 model and it seems to be getting really bad gas mileage and the transmission seems to be shifting a little clunky from 1st to 2nd gear. The R.F.W. switch light does not come on when I shift into 4x4 so I'm wondering if the switch doesn't work and if the front wheel mechanism is staying locked. So I want to know if I can manually unlock the R.F.W. lock system.
Simplest way to completely bypass everything is to run a vacuum hose from your manifold down to the four-wheel-drive actuator on the axle and you can either engage or disengage it by which side of the actuator you hook the vacuum to
87-88 hubs will work on all the 2600i
I having trouble with this truck hoping maybe you could help me out. Trying to change the rotor but it seems like I need to remove the entire hub assembly including the wheel bearing. I'm having a hard to removing the locknut out. It's a 2 prong about 1.5" can't seem to find that type of tool even called mazda dealer. Any clue? (Got a 6 lugs version)
You pull the two 8mm head bolts out then you pull the snap ring off the cv axle then you pull the lock plate off with all the holes in it then you are at the lock nut that you speak of. There is four holes two of them have threads and two of them don't. The two that don't put a large screw driver in the edge of the hole and aim it counter clockwise and tap it with a hammer it should back off no problem. The stock tool is called a spanner wrench I've never seen one for this truck
Do you know if any of the aisin lock out hubs fit the B2600?
You would have to call the parts store I have seen hubs on other trucks that looked like they would work
Hello there, I have a small leak coming from my transfer case on the passenger side where the CV axle mates to the transfer case. Is there a seal there that I can replace or is it just the cv axle itself? I've found "transfer case output shaft seal" and "transfer case input shaft seal" online but the diagrams are either non-existant or useless to tell where these seals actually go. Your help would be appreciated.
Is there any way to manually disengage the actuator to get it out of 4wd since my switch is broke?
Get manual hubs off and 87 or 88 B2600. Or swap the vacuum lines at the actuator
World Science TV tried swapping the lines at the actuator and nothing. Still stuck
@@bluGill89 was there any vacuum on the lines. you must now check for vacuum at the two lines you should be able to manually switch the actuator on the axle.
World Science TV I’ll crawl under it tomorrow again and see what’s up. Where can I manually disengage the actuator at?
@@bluGill89 right at the axle the shaft coming out of the actuator
Hi I am having problems starting my 1993 Mazda B2600i when the engine is warm. When cold it cranks for a while and eventually starts and revs high. When warm it revs low and quickly dies or doesn't start at all (does not respond to gas pedal). Any ideas?
At any point in time do you get power out of the engine enough to drive up a hill. The number one thing first to check is always the computer on this vehicle they have a 99.9% failure rate and even rebuilt ones will be bad right off the shelf once this is confirmed that your computer is good or not then we can proceed.
My 92 mazda bb2600i 4x4 indicator senor is broken but i cant find it anywhere do u knw the exact name or do u have a part #..my 4x4 light stays on cause the sensor is broke pls help
The switch on the dash have you pushed it to disengage the 4x4. We need to find out what part is failing. The switch on the axle works if you’re light is on on the dash. Is the actuator moving on the front axle. Does the actuator have vacuum to the in engagement or disengagement side of the actuator. Then the vacuum solenoids that controls the actuator on the inner fender behind the battery do they have power going to the engagement solenoid this is the key point to start with your voltage meter.
@@WorldScienceTV i had my clutch replaced and the mechanic broke the wires off from the 4x4 indicator sensor by accident (don't know how he did that)so i have to replace it but i cant seem to find the part...thats why the 4x4 light is constantly on
Proper it is not a sensor or indicator it is a switch. What is the exact location of the switch. Because there are two different ones
And the wires can be soldered back on
is there a way you can manually engage the front differential
Yes with a vacuum hose to the plenum
@@WorldScienceTV thanks for the answer. question are there any websites that sell the locking hubs for the 87-88 mazda 4x4 trucks
You would have a better chance finding them in Australia Ebay.AU
If you download an app called gumtree this is the equivalent to Australia’s craigslist there is one listing for a hub assembly with the four-wheel-drive hub on it under search (b2600 hub)
www.ebay.com.au/itm/323610174892?epid=2224343975&hash=item4b58ab65ac:g:9N8AAOSwPGtcG1yP
b2600i 4x4 automatic tranny, 4x4 doesnt engange, I can start engine even if shifter its in drive. have any idea?
O ring on trany filter broken
I dealt with a similar problem check to see if the cable came off of the transmission first then put a few gallons of atf in it way over the full mark to see if the