Z-train Posted July 5, 2013 Report Share Posted July 5, 2013 The nose slid forward by itself and right into the pilot bushing and the case and block banged together... alI I did was rotate slightly to line the bolt holes up!!!! Woot, never did that before or since.I assume you bought lottery tickets that day. Quote Link to comment
datzenmike Posted July 5, 2013 Report Share Posted July 5, 2013 I'm here so... no. Quote Link to comment
LenRobertson Posted July 5, 2013 Report Share Posted July 5, 2013 Yeah, 20 minutes of sweating, swearing, and getting red in the face is pretty much required. Then all of a sudden the tranny slips in. Two people is much better. You need to have the face of the bell housing and rear face of the block exactly parallel as the nose of the trans shaft approaches the pilot bushing. It is really hard to see if they are parallel while you are jockeying the tranny, hence the 2nd person to watch alignment and shout encouragement. Or help swear when it isn't working. I haven't had a chance to actually try this yet, but want to the next time I do a tranny by myself: The plywood platform rolls on 3/4" pipe or broom handle. The tranny needs to be blocked up level so it goes into the engine straight. But you can roll the tranny with one hand while watching the alignment at the bell housing. I've thought of bolting a couple of Datsun scissors jacks in place of the blocks to give fine up and down height adjustment, sort of a DIY tranny jack. Len 1 Quote Link to comment
Eagle_Adam Posted July 5, 2013 Report Share Posted July 5, 2013 hence the 2nd person to watch alignment and shout encouragement. Or help swear when it isn't working. :rofl: :rofl: :rofl: :rofl: been there man, too many times now 1 Quote Link to comment
bananahamuck Posted July 5, 2013 Report Share Posted July 5, 2013 Yeah someone to just stand there, agreeing that it should have went in already is strangely calming.. What the fuck is the problem!! I dunno it looks pretty close. ok,,,,,,,,,,,,, let me try something.. 1 Quote Link to comment
Eagle_Adam Posted July 5, 2013 Report Share Posted July 5, 2013 Yeah someone to just stand there, agreeing that it should have went in already is strangely calming.. What the fuck is the problem!! I dunno it looks pretty close. ok,,,,,,,,,,,,, let me try something.. that ^^^ is the story of EVERY transmission ive put in a datsun :/ 1 Quote Link to comment
darrel Posted July 5, 2013 Report Share Posted July 5, 2013 I haven't had a chance to actually try this yet, but want to the next time I do a tranny by myself: Umm, I don't think we would want to know. :w00t: :rofl: Definitely easier with two when not on a lift. How cramped is it in a 720? easier, harder or about the same as a 620? In the z's you can cut some head bolts down long enough to thread in the block and long enough you can get them out by hand and use them as alignment pins. Once the bellhousing contacts a couple of the bolts it will just slide in without struggling getting the input shaft in the pilot bushing. Quote Link to comment
Eagle_Adam Posted July 5, 2013 Report Share Posted July 5, 2013 In the z's you can cut some head bolts down long enough to thread in the block and long enough you can get them out by hand and use them as alignment pins. Once the bellhousing contacts a couple of the bolts it will just slide in without struggling getting the input shaft in the pilot bushing. No fucking shit..... thats an awesome idea!!!!!!!!!! Quote Link to comment
LenRobertson Posted July 6, 2013 Report Share Posted July 6, 2013 Umm, I don't think we would want to know. :w00t: :rofl: I'll remember the rule - pics or it didn't happen! :P Quote Link to comment
cdub42 Posted July 6, 2013 Report Share Posted July 6, 2013 Yeah someone to just stand there, agreeing that it should have went in already is strangely calming.. What the fuck is the problem!! I dunno it looks pretty close. ok,,,,,,,,,,,,, let me try something.. thats how we got the 5 speed in the Z 1 Quote Link to comment
mattmctree@gmail.com Posted July 7, 2013 Author Report Share Posted July 7, 2013 so i got the tranny up in the cavity and the cross member loosely put on. i tried for an hour to get the transmission into place. what a paint in the sac! i ended up leaving it and will go back to it later to try again. i used a clutch tool one that hold the pressure plate and clutch disc together, the clutch kit i bought didnt come with one of the regularr slide in types, it is really testing my patience. i cant seem to get the to line up. when i pulled the tranny i noticed that grease i put on looked like the splines had gone in a bit but not very far . i dont know where to get one of the regular types of clutch tools. it seemd like maybe the one i have didnt line it up properly. Quote Link to comment
bananahamuck Posted July 7, 2013 Report Share Posted July 7, 2013 I think the ancient philosopher Whitesnake said it best.. Quote Link to comment
HRH Posted July 7, 2013 Report Share Posted July 7, 2013 YES! I'm the first one to post this, I'm soooo excited!! :D :D :D PUSH IT REAL GOOD!!! Quote Link to comment
Ratwagon1600 Posted July 7, 2013 Report Share Posted July 7, 2013 Hello mate, sorry I've come in a little bit late on this thread. You mentioned you replaced the pilot bushing? Did you check the bushing located over the gearbox shaft prior to fitting? Also, have you used a bit of what we call emery paper, or wet and dry sandpaper to make sure there are no burrs or high spots on the gearbox shaft? Which may cause difficultys with the replacement. Quote Link to comment
HRH Posted July 7, 2013 Report Share Posted July 7, 2013 Whoa whoa whoa, you Aussie bastard!! You said you were taking a hiatus!! You lie!! :D Quote Link to comment
Ratwagon1600 Posted July 7, 2013 Report Share Posted July 7, 2013 Whoa whoa whoa, you Aussie bastard!! You said you were taking a hiatus!! You lie!! :D Oh well, I'm baaaaaaccccckkkkkkkkkkkl :) Quote Link to comment
HRH Posted July 7, 2013 Report Share Posted July 7, 2013 Just like the damn poltergeists!! I hope you're strapped in, you know you'll fall off the earth hanging upside down there! Lulz Quote Link to comment
Eagle_Adam Posted July 9, 2013 Report Share Posted July 9, 2013 i can mail you an alignment tool man, PM me Quote Link to comment
Ratwagon1600 Posted July 9, 2013 Report Share Posted July 9, 2013 Has this conundrum been fixed? Quote Link to comment
Z-train Posted July 9, 2013 Report Share Posted July 9, 2013 Has this conundrum been fixed? What was her name? Quote Link to comment
mattmctree@gmail.com Posted July 11, 2013 Author Report Share Posted July 11, 2013 not yet . hopefully i will get a chance to work on it this weekend. Quote Link to comment
mattmctree@gmail.com Posted July 18, 2013 Author Report Share Posted July 18, 2013 ive taken my transmission out of my 84 720 4x4. where do i find the model of tranny that i have? i picked up a spare transmission that looks exactly the same as mine but want to know how to identify it. both transmissions are identicle side by side and both came out of 80;s 720 4x4. any help where to find markings or stampings would be great. Quote Link to comment
datzenmike Posted July 18, 2013 Report Share Posted July 18, 2013 All years and models of 720 used the 71B series transmission in either 4 or 5 speed and 26" or 31.5" lengths. They were fitted to three different motors, the L and Z series gas and the SD diesel motors. The differences were the starter placement and the bolt patterns on the front otherwise they were the same transmission basically. The 84 720 4x4 is an FS5W71B (5 speed) There are no serial numbers or anything much to ID it by. It will either be 26 or 31.5" long depending if you have a KC or short wheelbase truck. Unlike the 2wd the 4x4 transmissions do not have a speedometer cable. On the front case near the reverse lamp switch it may say 71B or LZ71B. If it helps all years of 720 used the 71B 4 or 5 speed transmission even the diesel. The differences are are how the bolt hole pattern to mount to the motor are located. Quote Link to comment
nerdistmonk Posted July 18, 2013 Report Share Posted July 18, 2013 there is a metal plate in my engine bay on the passenger side that shows the transmission, idk if its the same location for a 720, but mine says FS5W71C then shows the rear end it has also right next to it. on the hardbody the doorjamb sticker dont have much useful info on it, its the one in the engine bay with juicy info. Quote Link to comment
DanielC Posted July 18, 2013 Report Share Posted July 18, 2013 How do you identify a transmission? Post a picture of it, and wait for Datzenmike to answer. Quote Link to comment
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