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904 problem
https://slantsix.org/forum/viewtopic.php?t=49755		 Page 1 of 2
Author:  SHKhan [ Sat Sep 08, 2012 4:34 pm ]
Post subject:  904 problem
Author:  spinn77 [ Sun Sep 09, 2012 8:13 pm ]
Post subject: 
looks like you do have somewhat of a transmission leak. Did you check the fluid level with the car idling in park? your kickdown linkage is hitting a hose clamp on one of the trans cooler lines in the last picture. this line should be all metal until it gets close to the radiator. I have bent a piece of brake line to make a new one. the kickdown adjustment should not have effect on it going into forward gear, so that most likely is not your problem. although it does need to be adjusted properly. you do have a shift linkage bushing that looks like its not in its place. i would check the shift linkage adjustment first.
Author:  SHKhan [ Mon Sep 10, 2012 9:46 pm ]
Post subject: 
Thanks Spinn77

Is there any way to pin point the leakage ?

can you send me some of your modification pics . i have check nothing is coming to the radiator from transmission only one big hose from engine connecting to radiator.

the level of the transmission oil is okay but in black color! should i replace the oil? what is the spacs??

regading the adjustment is there any procedure ?
Author:  SlantSixDan [ Mon Sep 10, 2012 10:25 pm ]
Post subject: 
Quote:
the level of the transmission oil is okay but in black color! should i replace the oil?
Yes, but it may be too late. Black transmission oil = probable dead transmission. :-(
Quote:
what is the spacs??
Use Dexron automatic transmission fluid.
Author:  SHKhan [ Tue Sep 11, 2012 12:17 am ]
Post subject: 
How can I confirm that transmission is dead ? any test like line pressure test .

car is going great in Reverse gear! :o
Author:  SHKhan [ Tue Sep 11, 2012 1:31 am ]
Post subject: 
I think i need to replace my car tires also, which probably causing trouble to the transmission .. :?:

currently have 17'' wheels with Kumho tires :lol:

I think the right tires size is 6.95 x 14" :!:
Author:  SHKhan [ Tue Sep 11, 2012 1:49 am ]
Post subject: 
here are some more details of tires

KUMO 225 /45 ZR 17

Image

Any Suggestions... I realy love these rim and tires :) did i need to change some thing in gear ratios. :roll:

[/img]
Author:  emsvitil [ Tue Sep 11, 2012 2:27 am ]
Post subject: 
Your tires are about 25" diameter

Original tire diameter if they were 6.95 14 is also 25"

So you're fine with the tires.......
Author:  Jeb [ Tue Sep 11, 2012 3:36 am ]
Post subject: 
If you have access to the parts, drop the pan and do a fluid and filter change. Sounds like a the friction material has disentegrated off a band or clutch pack.
Author:  SHKhan [ Wed Sep 12, 2012 1:15 pm ]
Post subject: 
Thanks emsvitil and Jeb for the post.

here are some pic of fluid. the level is taken as per procedure (Lever on N and run for 5-10 min)

can you tell me is this color okay? some bubble i have notice can see in oic below.

Image

Image

This is the carb setup i have it is stromberg BXUV

Image

I tryied to put car in reverse and car move fine. then put on D i can feel the car take jerk to move front then when pre accelerator it move very slow looks not power engine reves but not getting power in wheel. what you guys think should i addjust front bend ?

before addjusting i am planing to remove transmission oil and drop the pen and clean the filter (new filter is not available already confirmed)
and then fill new oil and try if not work do the front bend adjustment!

any suggestion guys will apriciate.

sorry for my english :)
Author:  Slanted Opinion [ Wed Sep 12, 2012 2:01 pm ]
Post subject: 
That color doesn't look bad, but that doesn't mean the transmission is ok.

Another quick check is to smell the fluid. If it has a strong burned smell it's time to rebuild the transmission.

- Mac
Author:  ceej [ Wed Sep 12, 2012 7:36 pm ]
Post subject: 
1. Car not running.

2. Have somebody press the accelerator to the floor, wide open throttle.

3. The Throttle Valve Lever on the transmission should be all the way back, toward the rear of the car. If not, adjust it so it is.

If this can't be accomplished, you will need to modify the kickdown linkage so it moves the throttle lever all the way back, or install the correct lever on the transmission. If you can grab it with your fingers and move it further, it isn't adjusted right.

Once you have the Throttle Valve, "TV", adjusted, change filter and fluid, and hope for the best!

The throttle valve adjusts line pressure. At idle or partial throttle, to make shifts more comfortable and earlier, the pressure is lower. At high throttle settings the pressure is higher and will delay upshifts or cause down shifts.

CJ
Author:  bigslant6fan [ Thu Sep 13, 2012 6:17 pm ]
Post subject:  .
Remember he said he couldn't find the trans cooler lines? I'm wondering if someone removed them,and blocked off the fittings.
Author:  SHKhan [ Thu Sep 13, 2012 10:04 pm ]
Post subject: 
The cooling looks modified by previous owner. now no more cooling from radiator a rubber hose connected from front to the back of transmission.

one more issue here in Pakistan very good mechanic for Manual Trans (1960s) but unfotunatly no one trained for old type auto transmission. all are talking sensors etc....

what is the good replacment of A-904 to manual transmission? any suggestion. A-904 parts are also not available in Karachi.....

Thanks
Author:  bigslant6fan [ Fri Sep 14, 2012 1:35 pm ]
Post subject:  .
There's the reason the transmission failed-NO cooling for the oil! Does the transmission drive forward fine when cold, and just slip when hot? If it only slips when hot,maybe it could be fixed by installing a trans cooler. If it slips even when cold, it is ruined. The rear clutch pack is engaged in all forward gears, but not in reverse, and is probly the item that failed.
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