Doug Nash 4+1 Help

[Mike Taylor 3601]

I'd say slider/dog problem,but a few more things has bellhousing been checked for alignment? My brother had one out he told me drive it maybe I can't drive,I can't remember if it was 3 or 4 or both but it was like you hit a wall with shifter would not go wide open or even the shameful Granny shift. BTW the term Granny Shift offended my Granny's,God rest their souls. His bell was like .050'' out and was way out of parallel we had to find guy with blanchard grinder big enough to true it up and we centered it.After that would fall in gear,still will need to service sliders/dogs once they are wore they will actually push apart instead of engaging.
Also make sure pilot bearing is good input out of line from bell or loose pilot bearing will let input move and keep from shifting.usaully misalignment high gear will be the worst but if you can't get high it's hard to tell.
You need to service trans and check all the things that have been mentioned in all these posts so you got it right and will not problems shortly.
If you have problem with pilot bearing the only type I have seen that will last is bearing w/sleeve on od that fits in the big hole where,please excuse my language,but i'm just gonna say it ''torque converter'' centers,well anyway on chevrolet.Jerico sells them
I had slider getting bad in Nash one time if you did'nt hold in would jump out of third when jumped out kept pushing when it bumped high side would go back in and most people never knew anything happened.
Mike Taylor 3601

[FED 387]

Forget to also mention input shaft and checking the runout on the bellhousing but I would of thought he had already done that---pilot bearing to use is from GM 6.2 diesel its a roller bearing same one Moroso sells also offset dowel pins from Moroso for bellhousing lets you move it where ya want it---you'll need a dial indicator with a magnetic mount on the crankshaft to check run out--get used to taking this trans out/apart only way you will solve your problems----after ya take it out and BEFORE ya split the case make sure you install the nuts on the shifter forks otherwise they come out and you'll need a long skinny screwdriver to get the detent springs and balls back in---ya gotta service these things every 40-50 runs check the sliders -hubs-dogs- grind the teeth--- check reverse idler gear also if my memory is correct 3rd gear runs the reverse gear so if ya ground it trying to get into reverse ya mighta screwed up 3rd too--Comp 387

[Ed Carpenter]

I have a Jerico but last year mine did the exact same thing. Every 2 or 3 runs it wouldn't go into 3rd gear. The bellhousing was out of alignment. Fixed that and no problems since(besides the engine last weekend)

[Bobby Fazio]

Hey guys thank you so much for your input. You guys definitely have me thinking because the last two times we put the trans in, it was kind of tough and it wouldn't go in easy, as if something was possibly out of alignment. I had a great bellhousing (quarter inch steel made in USA) from years ago but the rules state you need a new one every 5 years (I don't understand why, and all made in China now).

I am getting to the bottom of this over the weekend. I will also check all the other things FED and some others recommended.

[Randall Klein]

I can't help myself, but I guess I'm glad I'm not a real man. Wow, what a list of potential problems....
ss/nA

I know I'll be sorry for posting this

[FED 387]

Regarding trying to put the trans in reverse from a forward gear ya might hafta let the clutch pedal up from the floor just a hair NOT TOO MUCH to get the shifter lever to move into reverse ---You'll feel it if you know what I mean otherwise your gonna buzz the gear and it probably is not gonna go into third next time. When you shift the forward gears pull the lever QUICKLY ram it into gear this helps too. Once ya learn all the little things/tricks about this trans they will really will work good ya just hafta do your maintainance on them otherwise you're gonna have problems.. See if ya can get 12 point bolts to mount the trans to the bell and 12 point nuts for the tail case to main case cuz of the tight space there it makes it easier to get a socket in/on them. --- Comp 387

[Joe Schaechter]

Originally Posted by SStock1373

I had a great bellhousing (quarter inch steel made in USA) from years ago but the rules state you need a new one every 5 years (I don't understand why, and all made in China now). .

Did you look at the Quick Time bellhousing. It is made in America, SFI certified and a great piece.

[Pvt Parts]

Originally Posted by SStock1373

Hey guys thank you so much for your input. You guys definitely have me thinking because the last two times we put the trans in, it was kind of tough and it wouldn't go in easy, as if something was possibly out of alignment. I had a great bellhousing (quarter inch steel made in USA) from years ago but the rules state you need a new one every 5 years (I don't understand why, and all made in China now).

I am getting to the bottom of this over the weekend. I will also check all the other things FED and some others recommended.

While you've got it apart, take the clutch out and make sure there's enough clearance between the clutch disc hub and the flywheel bolts.
I once had a worn clutch disc that just barely touched the flywheel bolts and caused the same problem. I never missed a shift unless something was wrong and one weekend at Bowling Green I missed the 3rd gear shift 3 times. That disc was the cause.

[Bobby Fazio]

Took the trans and clutch out yesterday and the pilot bushing just fell out. It was worn and burred up which leads me to believe something is not lining up correctly. I could feel the vibration coming up through the shifter handle on the last few runs and that could be the main reason it wouldn't go in third gear. My trans still looks good.

[buzzinhalfdozen]

Since Dueces wild called it I didn't respond but yes a misaligned bellhousing can cause exactly the issues you're having. You need to check the alignment and correct it before reassembly, Lakewood makes a nice set of offset dowels that make it easy to zero a bellhousing in it's not hard to do just need a magnetic base dial indicator. You can probably download the directions off their web site. Joe