kramttocs Posted December 21, 2020 Author Share Posted December 21, 2020 We weren't in layers. We were Boy Scouts on a campout in the fall in shirts and jeans. Somehow we got in a hedge apple fight. I remember taking a direct hit in the chest, and it almost knocked me down. Anyway, those posts will last a long, long time! Ouch! I can almost hear the 'oomph' Go some GVOD work done today. This unit came from an 86 6.9/4spd 4wd. The diesel may have leaked a drop every now and then. Note that the bottom of the unit is flat under the protruding block. This is because this unit doesn't have the deep sump like would normally be on a truck. It's also an old model (1993 I think) so it may have been on another vehicle before the diesel. There is a lot of great info here. It covers this process in great detail so I won't repeat what he details. On the unit in Camano I made my own spanner wrench to get to the upper filter. For this one I ordered the actual tool and it worked much better. Here is after cleaning both filters and installing the flat filter with extension for the deep sump. With the deep sump installed. As was mentioned in the article above, the hex head bolts aren't perfectly suited for the fins on the sump. I ran into this with Camano so I ordered some flanged ARP bolts and it worked much better. Since the adapter on the truck was for the bw1345 I had to find a T18/19 one with coupler. Installed a new seal in it and temporarily installed it. It will need to come off since it has to be installed to the tranny and then the coupler shimmed before the OD is installed. Time to read up on the T18 to see what to expect when I remove the rear tailshaft... Link to comment Share on other sites More sharing options...
grumpin Posted December 21, 2020 Share Posted December 21, 2020 Ouch! I can almost hear the 'oomph' Go some GVOD work done today. This unit came from an 86 6.9/4spd 4wd. The diesel may have leaked a drop every now and then. Note that the bottom of the unit is flat under the protruding block. This is because this unit doesn't have the deep sump like would normally be on a truck. It's also an old model (1993 I think) so it may have been on another vehicle before the diesel. There is a lot of great info here. It covers this process in great detail so I won't repeat what he details. On the unit in Camano I made my own spanner wrench to get to the upper filter. For this one I ordered the actual tool and it worked much better. Here is after cleaning both filters and installing the flat filter with extension for the deep sump. With the deep sump installed. As was mentioned in the article above, the hex head bolts aren't perfectly suited for the fins on the sump. I ran into this with Camano so I ordered some flanged ARP bolts and it worked much better. Since the adapter on the truck was for the bw1345 I had to find a T18/19 one with coupler. Installed a new seal in it and temporarily installed it. It will need to come off since it has to be installed to the tranny and then the coupler shimmed before the OD is installed. Time to read up on the T18 to see what to expect when I remove the rear tailshaft... Looks good! Hmmm... Link to comment Share on other sites More sharing options...
ArdWrknTrk Posted December 21, 2020 Share Posted December 21, 2020 Ouch! I can almost hear the 'oomph' Go some GVOD work done today. This unit came from an 86 6.9/4spd 4wd. The diesel may have leaked a drop every now and then. Note that the bottom of the unit is flat under the protruding block. This is because this unit doesn't have the deep sump like would normally be on a truck. It's also an old model (1993 I think) so it may have been on another vehicle before the diesel. There is a lot of great info here. It covers this process in great detail so I won't repeat what he details. On the unit in Camano I made my own spanner wrench to get to the upper filter. For this one I ordered the actual tool and it worked much better. Here is after cleaning both filters and installing the flat filter with extension for the deep sump. With the deep sump installed. As was mentioned in the article above, the hex head bolts aren't perfectly suited for the fins on the sump. I ran into this with Camano so I ordered some flanged ARP bolts and it worked much better. Since the adapter on the truck was for the bw1345 I had to find a T18/19 one with coupler. Installed a new seal in it and temporarily installed it. It will need to come off since it has to be installed to the tranny and then the coupler shimmed before the OD is installed. Time to read up on the T18 to see what to expect when I remove the rear tailshaft... On the plus side, Scott, the exterior of the overdrive unit is pretty much corrosion free! (This is what I keep telling myself about my oil pan gasket... or lack of one) The T-18/19 is a pretty simple toploader. Big chunks of steel and bearings. If you're going in you might want to replace the synchros as a matter of course. I'm sure no oil field truck was treated too well over its hard life. How much will you cut down your driveshaft? Link to comment Share on other sites More sharing options...
Gary Lewis Posted December 21, 2020 Share Posted December 21, 2020 Ouch! I can almost hear the 'oomph' Go some GVOD work done today. This unit came from an 86 6.9/4spd 4wd. The diesel may have leaked a drop every now and then. Note that the bottom of the unit is flat under the protruding block. This is because this unit doesn't have the deep sump like would normally be on a truck. It's also an old model (1993 I think) so it may have been on another vehicle before the diesel. There is a lot of great info here. It covers this process in great detail so I won't repeat what he details. On the unit in Camano I made my own spanner wrench to get to the upper filter. For this one I ordered the actual tool and it worked much better. Here is after cleaning both filters and installing the flat filter with extension for the deep sump. With the deep sump installed. As was mentioned in the article above, the hex head bolts aren't perfectly suited for the fins on the sump. I ran into this with Camano so I ordered some flanged ARP bolts and it worked much better. Since the adapter on the truck was for the bw1345 I had to find a T18/19 one with coupler. Installed a new seal in it and temporarily installed it. It will need to come off since it has to be installed to the tranny and then the coupler shimmed before the OD is installed. Time to read up on the T18 to see what to expect when I remove the rear tailshaft... Man, that thing looks SOOOOO much better after cleaning. Just that alone is worth a WELL DONE! Looks like it is going well. And you have good weather in which to work. Link to comment Share on other sites More sharing options...
FuzzFace2 Posted December 21, 2020 Share Posted December 21, 2020 Man, that thing looks SOOOOO much better after cleaning. Just that alone is worth a WELL DONE! Looks like it is going well. And you have good weather in which to work. On my T18 & the NP435 it was cake to remove the tail housings to fit the speedo drive gears on them. My transmissions out put shaft was a slip type so it was nothing to pull the drive shaft. Support the trans, remove the trans mount I was able to raise the trans and sneak it out. Undo the speedo cable, remove the bolts holding the tail housing in place and a love tap from a rubber mallet I was able to pull it off. If the gasket was in good shape I just used gasket dressing and if not forum-a-gasket. Dave ---- Link to comment Share on other sites More sharing options...
Rembrant Posted December 22, 2020 Share Posted December 22, 2020 Ouch! I can almost hear the 'oomph' Go some GVOD work done today. This unit came from an 86 6.9/4spd 4wd. The diesel may have leaked a drop every now and then. Note that the bottom of the unit is flat under the protruding block. This is because this unit doesn't have the deep sump like would normally be on a truck. It's also an old model (1993 I think) so it may have been on another vehicle before the diesel. There is a lot of great info here. It covers this process in great detail so I won't repeat what he details. On the unit in Camano I made my own spanner wrench to get to the upper filter. For this one I ordered the actual tool and it worked much better. Here is after cleaning both filters and installing the flat filter with extension for the deep sump. With the deep sump installed. As was mentioned in the article above, the hex head bolts aren't perfectly suited for the fins on the sump. I ran into this with Camano so I ordered some flanged ARP bolts and it worked much better. Since the adapter on the truck was for the bw1345 I had to find a T18/19 one with coupler. Installed a new seal in it and temporarily installed it. It will need to come off since it has to be installed to the tranny and then the coupler shimmed before the OD is installed. Time to read up on the T18 to see what to expect when I remove the rear tailshaft... What a big difference from dirty to clean;). That is so satisfying. I love that part. Link to comment Share on other sites More sharing options...
kramttocs Posted December 22, 2020 Author Share Posted December 22, 2020 What a big difference from dirty to clean;). That is so satisfying. I love that part. Thanks guys! Cory - absolutely. I know you've spent more than your fair share wire wheeling lately. It really is nice to be able to work on something after cleaning and not worry about crud either falling in your eyes or somewhere in the part isn't supposed to be. Gary - the weather today was even better but sadly had to work during the best part of it... Jim - that is the big question now: driveshaft. I was going to ask Jonathan if he has a 1 or 2 piece. Since mine is 2wd I may be able to stick with two. Haven't been under the truck and paid attention to the front piece length to really have a guess at it. And yes, that truck needed no undercarriage wax treatment Dave - so will I lose any oil pulling that rear piece off? Haven't decided how deep I want to go into the tranny yet. I have no doubt it would benefit from some attention. Link to comment Share on other sites More sharing options...
ArdWrknTrk Posted December 22, 2020 Share Posted December 22, 2020 Thanks guys! Cory - absolutely. I know you've spent more than your fair share wire wheeling lately. It really is nice to be able to work on something after cleaning and not worry about crud either falling in your eyes or somewhere in the part isn't supposed to be. Gary - the weather today was even better but sadly had to work during the best part of it... Jim - that is the big question now: driveshaft. I was going to ask Jonathan if he has a 1 or 2 piece. Since mine is 2wd I may be able to stick with two. Haven't been under the truck and paid attention to the front piece length to really have a guess at it. And yes, that truck needed no undercarriage wax treatment Dave - so will I lose any oil pulling that rear piece off? Haven't decided how deep I want to go into the tranny yet. I have no doubt it would benefit from some attention. Scott, normally I'd reply with 'Progress is good! :nabble_smiley_good:' But in your case I'd say Progress is awesome! Glad you've got sunshine. Probably saved 20 pounds cleaning that thing off. Link to comment Share on other sites More sharing options...
FuzzFace2 Posted December 25, 2020 Share Posted December 25, 2020 Scott, normally I'd reply with 'Progress is good! :nabble_smiley_good:' But in your case I'd say Progress is awesome! Glad you've got sunshine. Probably saved 20 pounds cleaning that thing off. Scott, I think I had the rear in the air so the trans oil would have been to the front of the trans. I think there was some but I don't remember it being that bad. Not like you will loose it all but there was some in the housing. I also want to say on both the T18 when I found the drive gear bad I had just got the truck on the road so it was topped up. Want to say it was the same with the NP435, just got it on the road and topped up. IIRC the speedo was off and I found the T18 drive gear would work so I did a drive gear swap between the 2 transmissions. Have a pan handy just in case LOL Dave ---- Link to comment Share on other sites More sharing options...
FuzzFace2 Posted December 25, 2020 Share Posted December 25, 2020 Scott, normally I'd reply with 'Progress is good! :nabble_smiley_good:' But in your case I'd say Progress is awesome! Glad you've got sunshine. Probably saved 20 pounds cleaning that thing off. Scott, I think I had the rear in the air so the trans oil would have been to the front of the trans. I think there was some but I don't remember it being that bad. Not like you will loose it all but there was some in the housing. I also want to say on the T18 when I found the drive gear bad I had just got the truck on the road so it was topped up. Want to say it was the same with the NP435, just got it on the road and topped up. IIRC the speedo was off and I found the T18 drive gear would work so I did a drive gear swap between the 2 transmissions. Have a pan handy just in case LOL Dave ---- Link to comment Share on other sites More sharing options...
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