Topic: 84 4x4 occasionally wont go into gear from a stop

[Cooper]

84 4x4 Pickup Shifts fine when motor is off. Shifts fine while driving. Most of the time it wont go into gear from a complete stop. Any of the gears. If I keep trying the gears eventually it will go into gear. Then it will go in any of them. I replaced the master cylinder it was leaking bleed the system, adjusted the pedal. The slave cylinder is moving. There is a creaking sound that comes from inside the bell housing when the clutch is pushed in and out. The throw out bearing makes a faint whirling sound.

I usually slowly put it in first gear when coming to a stop it goes in fine. The truck has 175,000 miles on it and I believe it has the original clutch. I don't mind pulling the trans, if it needs internal repairs I'll get a Marlin rebuilt just don't want to pull it and replace the clutch and still have the same problem.

One note I think the clutch is working because I tried reverse and slowly released the clutch until i could hear reverse start grinding?

Syncros, shift forks???

Any help would be appreciated.

[junya92toy]

Time for a new clutch kit, pressure plate, disk, throwout bearing, and replace the slave cylinder too,

[Cooper [OP]]

Thanks for the reply!

Well that sounds doable, so you don't think there is anything wrong with the tranny?

[junya92toy]

I think the pressure plate is worn out.

[junya92toy]

Its cheaper then a new trans to try it, and if you need a new trans, you have a new clutch kit to put in it

[Cooper [OP]]

Cool makes sense, I'll order one up and give it a go!

Thanks

[PETDOC]

Not sure if this applies, but there is a rubber cup under your shifter that wears down and eventually will roll up preventing you from shifting into a gear or causing the shifter to pop out after you get it into gear. It is a really simple and cheap fix.

[OOPS]

Sounds more like a transmission problem then a clutch problem to me. It could be the shifter seat cup is broken, is the shifter real sloppy?  You can get H-D ones from Marlin.Easy fix, pull the boot off the shifters and take the shifter out of the shifter socket and check the plastic bushing to see if it is broken.  It could be the synchromesh gears in the tranny.

If you have to pull the tranny, do not forget to have the flywheel checked for cracks and resurfaced.

Here is a link to the shifter parts you may need:

http://www.marlincrawler.com/transmission/parts-upgrade/heavy-duty-shift-lever-ball-seats

http://www.marlincrawler.com/transmission/parts-upgrade/heavy-duty-shift-lever-socket

[Cooper [OP]]

Thanks for more input I forgot to say that I did order a new bushing and cup    tried that hoping it would work. the old one was mush. The problem was still there.

When I pull the trans hopefully there will be some signs of the problem. If not I may just get a new trans and transfer from marlin then I be will good for a long time. I really don't want to pull the trans twice if the clutch isn't the problem. time is money, money is time even if your doing it yourself.

Thanks again for the input.

[junya92toy]

175k on a clutch is a long time, even longer on a 4x4

[Cheesemaker]

I think there is nothing wrong with the trans.   Mine does it.  And it's been rebuilt.  Its the fact that the synchro's are blocking the gears from meshing.  But over time, by forcing it into and out of gear, you can manually move the synchros, till you can get the gears to slide into and out of other gears. 

Try this, the next time it doesn't engage while stopped, put it in Neutral, and engage the clutch, and then disengage the clutch, and try again shifting gears.  What you'd done is send power into the trans, spinning the gear assemblies, and the synchro's will have moved to a different spot. 


I've had many friends want to sell their rigs, because they have difficulty getting it into first or reverse.  Till I tell them, those gears generally don't have synchros.  I tell them to engage and disengage the clutch, and then the gear shift will fall into place.  Next thing I know they aren't selling their rigs.