Rear shocks and transmission fluid change
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1985-1992 Fleetwood, 1993 Sixty Special, All FWD Forum Discussion, Rear shocks and transmission fluid change in Past Cadillac Vehicle Discussion; hey guys, I am putting rear Monroe 40046 shocks on the caddy. what is a good overall PSI to pump ...
  1. #1
    blalockchiro's Avatar
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    Cool Rear shocks and transmission fluid change

    hey guys,
    I am putting rear Monroe 40046 shocks on the caddy. what is a good overall PSI to pump the bladders up to? I will be vacationing nxt week and will have a heavy load on the car...300 lbs in back seat and trunk.
    I am also doing a tranny fluid change, filter, fluid and gasket?
    if I do just a basic fluid change...how many quarts of dex VI are needed?
    If I drain the entire transmission, how many quarts of dex VI do I need?
    Also, ranger, sub or moist or whomever, can you send pics of tranny points?

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    Submariner409's Avatar
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    Re: rear shocks and tranny fluid change

    Install a T in the Monroe air lines and route it up to a Schrader valve in the trunk. You WILL need to change air pressure in the shock bladders to maintain height control. Look at the AirLift website - they have been making air bags, air shocks, and various air lift control systems since at least 1960.

    No filter change possible - only at total overhaul. About 8 quarts - the transmission/torque converter holds ~15 from totally dry. If you want to get messy, you can make up a fitting to attach to the top transmission cooler line at the radiator - you attach a hose to the discharge line, put the end in a 5 gallon bucket and have an assistant start the engine at idle - the fluid pumps out - when it starts spitting, shut down and replace the same amount of fluid.

    Depending on whether you do a simple pan drop and screen cleaning - or that and a side tank drain - you'll get different amounts of fluid out, but you can never drain it all. The only way to change it all - all - is with a transmission fluid vacuum/pressure exchange system

    Remember - the transmission is a DRY SUMP unit - there will be NO FLUID on the stick with the engine off - proper level is set with the engine hot, idling in P on a level surface. DO NOT, ever, attempt to check fluid levels with the engine off.

    I don't have a diagram of a pre-2000 transmission.

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    Ranger's Avatar
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    Re: Rear shocks and transmission fluid change

    The gasket is reusable.

    If I remember correctly, I used 7 or 8 qts with a pan drop.

    "pics of tranny points?"

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    Re: Rear shocks and transmission fluid change

    so, since I do not have to change filters and gasket, should I just change out fluid?, even though I am assuming the filters and gasket has never been changed?

    ok...cool on remainder...thanks guys, I am sure I will have more questions when I start the job, so stay tuned....

    ----------

    ok give me a full website address...it took me to a medical website....

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    Re: Rear shocks and transmission fluid change

    Google "air lift spring booster" or "air lift suspension bags"............ as in: Air Lift Company.

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    stoveguyy is offline Cadillac Owners Connoisseur
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    Don't forget to pull drain plug for side pan

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    Re: Rear shocks and transmission fluid change

    stove...yep that is why I was asking about total fluid replacement, if I pulled the drain plug
    sub...got it, found the website, but it only tells for there products....
    can someone answer the my question in the 2nd entry?

    ----------

    ohhh...where did I get moved too???

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    jimsbox is offline Cadillac Owners Enthusiast
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    Re: Rear shocks and transmission fluid change

    I run probably 50 to 70 psi in my Monro air shocks, I like to keep the rear end a little bit high.

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    Re: Rear shocks and transmission fluid change

    You won't get very much additional fluid out of the "hidden plug" for the side cover, but pull it anyway. That will still not remove ALL the fluid. You still have several qts in the TC. If you want to remove that as well, you'll have to pull the trans fluid cooler supply line, put a hose on it, start the car and let it idle and pump out the remainder into a bucket. Shut down when it stops pumping.

    You got moved to the Deville forum since this is not Northstar (engine) related.

  11. #10
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    Re: Rear shocks and transmission fluid change

    Quote Originally Posted by blalockchiro View Post
    hey guys,
    I am putting rear Monroe 40046 shocks on the caddy. what is a good overall PSI to pump the bladders up to? I will be vacationing nxt week and will have a heavy load on the car...300 lbs in back seat and trunk.
    I am also doing a tranny fluid change, filter, fluid and gasket?
    if I do just a basic fluid change...how many quarts of dex VI are needed?
    If I drain the entire transmission, how many quarts of dex VI do I need?
    Also, ranger, sub or moist or whomever, can you send pics of tranny points?
    \-------------------------------
    I am putting rear Monroe 40046 shocks on the caddy.
    what is a good overall PSI to pump the bladders up to?

    if this is a real question - and NOT JUST A TEST -

    you should keep a MINIMUM of 10PSI when the car is empty -

    when loaded - inflate the shocks until the car sits level -
    WITH A MAX of 120PSI -

  12. #11
    blalockchiro's Avatar
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    hahaha...ur funny bass...no test, just playin in the other thread....thanks ranger and bass 4 info...on the tranny just really changing fluid, but i did not know if i needed to change filters but will do anyway...so if i just change fluid, refill with 7-8 quarts as ranger said?

  13. #12
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    Quote Originally Posted by blalockchiro
    did not know if i needed to change filters but will do anyway
    You can't change the filter. It's only serviceable during a transmission overhaul.

  14. #13
    blalockchiro's Avatar
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    ohhhhh...in other words pulling the tranny....so just change fluid?

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    Re: Rear shocks and transmission fluid change

    Yes, but there are two cleanable and reusable screens in the pan.

  16. #15
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    Re: Rear shocks and transmission fluid change

    ok...cool thanks ranger

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