I've got a 904 Push Button transmission with a problem. It sometimes sticks in park. If I park on flat ground it's fine, but if I park on a bit of an incline the only way I can get it out of park and into gear is by alternating between reverse and drive until one of the gears engage/or the park brake disengages. If this doesn't work then I need to put the park brake lever into the "off" position then rock the car backwards and forwards until the park brake disengages. As you can imagine this is very annoying.

The transmission was rebuilt earlier this year and it's had this problem since then. The guys that did the work have tried adjusting the position of the park brake cable were it goes into the trans but it hasn't got any better. Any tips or advice on this problem is greatly appreciated.

Cheers, Jon.

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62 Valiant, 225cid Slant 6/PB 904 with lots of good bits

http://www.moparmarket.com/readersrides ... user=SV162

Sounds to me as if the rebuilders weren't adequately familiar with cable-operated Torqueflites. Where (exactly) are you located? Do you have a factory(!) service manual? The cables must be installed and adjusted correctly (not just readjusted randomly) or there'll be problems. Note that the "park brake" is the hand-operated device that operates on the rear wheel brakes. The park lock is the item giving you a problem currently.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

That's a good bet. Misadjustment is most likely, but I've also seen one rebuilt cable-shift 904 with the park lock misassembled.

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"When you find a big kettle of crazy, it's best not to stir it." - Pointy-haired Boss

1964 Valiant V200, 225/Pushbutton 904
BBD, CAI, HEI, LBP, AC, AM/FM/USB, EIEIO

A damaged or kinked park lock cable can cause the problem.
Inspect the cable housing, sometimes they are not put back into their proper location / floor clip, allowing the cable touch the exhaust pipe, this will burn-off the plastic cable covering and cause the problem you are having.
DD

Yeah, definitely if the cable jacket gets burnt off by the exhaust pipe, the cable can either flex too much or bind up on the melted plastic (depending how and where it's damaged). If the cable still moves freely within the casing but the casing's damaged/burnt, a workable fix is described here.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

Thanks for that guys. The cable casing was definitely damaged, but that was about 10years ago, and this problem has only occured since the rebuild. So I'm thinking it's adjustment issues.
I'm in Perth, West Australia. No I don't have a factory/service manual.
Sorry about that but in the land of Oz we call this the "hand brake". And I currently don't have one of those.

Cheers, Jon.

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62 Valiant, 225cid Slant 6/PB 904 with lots of good bits

http://www.moparmarket.com/readersrides ... user=SV162

Have the same problem with a 63 pushbutton 904. The car hasn't been driven much but the trans worked fine when I moved the car in May. The car is parked on a street with a slight incline. Labor Day weekend I started the car but when I went to put it in gear it felt like it was going in but the car wouldn't move. Tried this in all gears with the same results. Added fluid since I noticed it looked like a slight rear seal leak. No difference other than a day or so later I noticed there was a large fluid spot rather than the original small spot.

Went out this morning and tried the rocking with no luck. Raised the rear end and rotated the tires but drive shaft didn't move. Have disconnected the drive shaft so I can get the car off the street for city street maintenance next week. Any suggestions?

Still need help on this. Car has been pushed off the street so it isn't as urgent but any suggestions welcome.

Do you have the factory service manual? Look at how the park lock works, and read up on the adjustment procedure.
If it won't release by moving the lever, you might have to disassemble it in place, then readjust.

_________________
"When you find a big kettle of crazy, it's best not to stir it." - Pointy-haired Boss

1964 Valiant V200, 225/Pushbutton 904
BBD, CAI, HEI, LBP, AC, AM/FM/USB, EIEIO

I have the service manual. The thing is the trans seemed to work fine prior to being parked. I have a carb problem so I hadn't been driving it much but had been able to move the car around. The Park lever would need to be held at the top and then put in gear. It has been years since I had a pushbutton trans so don't remember if this was normal or when the lever was moved to the top it would stay there.

Sounds like a bad or mis-adjusted park cable.

Inspect the cable for burnt or broken (split) outer jacket and make sure the end(s) did not come loose / pull-out.
You may want to remove the cable from the trans. and test operation of the park pawl assembly, as well as the cable / pushbutton assembly.
DD

The adjustment might have been OK when it was last done, but with time, wear, and tolerance stackup it might not be now.

Reminds me of something Colin Chapman (founder of Lotus) said of suspensions:

"Make the suspension adjustable and they will adjust it wrong -- look what they can do to a Weber carburetor in just a few moments of stupidity with a screwdriver."

Having spent considerable time screwing things up with a screwdriver myself, I can relate.

_________________
"When you find a big kettle of crazy, it's best not to stir it." - Pointy-haired Boss

1964 Valiant V200, 225/Pushbutton 904
BBD, CAI, HEI, LBP, AC, AM/FM/USB, EIEIO

The park lever should stay where you leave it. Park should only engage with the lever deliberately pulled down.

"N" in, lever up is neutral.
"N" in, lever down is park. (Pawl engaged).

Like Doc, I wonder if your cable broke.

_________________
"When you find a big kettle of crazy, it's best not to stir it." - Pointy-haired Boss

1964 Valiant V200, 225/Pushbutton 904
BBD, CAI, HEI, LBP, AC, AM/FM/USB, EIEIO

Thanks for the input. Sometimes hearing it makes more sense than reading it in the manual. Looks like I will have to break down & get the car on jackstands so I can actually see the cable.

Once I move the lever up & select a gear the lever stays up. Just moving the lever up without selecting a gear and the lever will fall back down. It used to hold at about two thirds of the way down.