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Thread: The Early 80's

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  1. #1
    Join Date
    Mar 2013
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    Chicago
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    Item 6

    Tag Axle Spindles and inner oil seals.

    20190908_114444.jpg

    heres where the inner seal of the hub rides on the spindle. This is NOT the tag its the drive axle hub in the picture. big radius, just wonderful. almost impossible to mif it and nick the seal going togeather.

    20190908_114505.jpg

    Here is what u get on the tag spindle. This carries through to mid 90s same stuff and in other aspects to this day with round nuts and pinch nuts.

    Look at the unbelievably stupid seal riding surface on the tag spindle compared to the drives. Zoom in on this one. Id like to meet the guy who signed off on this design. Why would u not put a smidge of a radius on this??,

    Because of this regardless of who pulls a tag hub IE local shop, prevo, yourself, me, keep a closer eye on the backside of the wheel to be sure the seal isint nicked on the friggin 90° Edge on the spindle. It only holds a pint full and it can drain in a hurry if it leaks. Yes u can go in for a leaky seal and leave with 1 too. Sorry. keep an eye on it till u know its ben put good after service here.

    Because of this design this procedure has M.I.F. written all over it. Be conch any time the tag hub is being removed from the spindle.

    So now, how tight is tight???????

    I always mention about how u should always index the hub before u disassemble it, see how mamy exposed threads u can count on the spindle before u loosin it. ITS CRITICAL FOR A NOVICE to do this on these tag hubs. The seal goes up SO TIGHT a novice might assume the hub is tight when its fsr from it. Il get the hub up put the outer bearing in and get the nut started. Then snug the nut turn the hub while hitting with a large rubber mallet snug the nut again and repeat until the 2 nuts and washer expose the same amount of threads on the spindle that u had before u disassembled it.

    if u set the inner nut correctly (its a round nut) do this after u verifyed the seal is completly seated. Then turning the round nut back a tic till its free then back tight, EASY, like safe crackin, by hand,easy, feeling close, find exactly where the round nut touches the bearing, that exact spot.

    Next, this is where many blow it.

    Turn it back loose 50°(aprox. friggin round nut). On a regular nut its exactly 1 flat spot of the nut backed off.

    If u have it good u will feel 1 or 2 1,000ENTHS of jiggle if to grab the hub and jiggle and see. AND then, after u run up the second locking nut up the jiggle in the hub goes away. That would be just about right. They say u can have a couple thousands in there tight but i think this tends to cause scuffing on the spindle where the inner races on the bearings ride.

    Choice is yours either way is within spec, sorta. Do u trust me? I told u my coustomers have been refered to as test pilots. Scatterbrain Service right? LOL

    Whos gonna be my next test pilot??

    Oh I neglected to mention the steer axle has the same desined spindles.
    Last edited by Joe Camper; 09-08-2019 at 03:17 PM.
    1990 Peterbuilt 377
    3406 B Caterpillar
    13 Speed Roadranger
    No Norgrens


    1 day on paper no machines

  2. #2
    Join Date
    Apr 2019
    Location
    Arlington
    Posts
    802

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    When using the torque multiplier how do you measure the torque ?


    Mark and Debbie Fratto
    1998 Parliament

  3. #3
    Join Date
    Mar 2013
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    Chicago
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    Instead of a breaker bar with the multiplier u put a torque wrench. My multiplyer is 10 to 1 so i set the wrench at 65. and it clicks at 650.
    1990 Peterbuilt 377
    3406 B Caterpillar
    13 Speed Roadranger
    No Norgrens


    1 day on paper no machines

  4. #4
    Join Date
    Mar 2013
    Location
    Chicago
    Posts
    3,988

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    Item 7

    The ride height valves.

    20190907_194913.jpg

    A brief history. L to R

    First one left these were on chassis until the early 90s
    King of the Road ride height valves. They win the absolute best co name for the product they provide award. love that name. These r not interchageable u have to specify L or R.

    next one from the left is a Haldex they were put on mid 90s chassis. All position easily available good valve. Co / product name ........ needs help

    next 1 over. 1 year wonder.
    knore bremse. Very short run, they suck, sorry. These things r spring loaded and even if u know that goin in the friggin thing spins out of yer finger and your posed with trial and error a few times before the new one is functioning correctly. Get my drift?? These really make problems for the novice. No wonder they didnt stay long.

    Last one to the right.
    Hendricson type. These came along by 2000 and I know they go at least till 12. These r great very small simple design very difficult to get wrong. the all around best choice accept for the bran name. Wouldnt suprise me to learn they r still using these.

    Question one of u guys with 2016 and newer. R the chassis still using the hendricson type or have they moved on again?

    20190907_195136.jpg

    King a the Road Ya baby u have no pulse if that name dont excite ya. I need to get a pair of these on my Peterbilt!!

    20190907_153809.jpg

    heres the adjustment for ride height for your 80s chassis. These r very nice. Makes small adjustments a sinch.

    On the 80s chassis with ALL copper plumbing the small stuff the 1/4 and 3/8 those r what become welded togeather over time . The bigger stuff all seperates good. Be very very careful with the 1/4 flare at the ride height valve. Have a fliring tool and couplers on hand and ready if u r changing these.

    20190908_092032.jpg

    the 83 La Mirage Shes sportin her new kingatheroads. yes sir.
    Last edited by Joe Camper; 09-09-2019 at 10:52 PM.
    1990 Peterbuilt 377
    3406 B Caterpillar
    13 Speed Roadranger
    No Norgrens


    1 day on paper no machines

  5. #5
    Join Date
    May 2014
    Location
    Granville
    Posts
    13

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    Maybe a "U" Tube channel in the future?

  6. #6
    Join Date
    May 2012
    Location
    Beverly Hills
    Posts
    4,652

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    Agreed, you need to do videos.


    Gil and Durlene
    2003 H-3 Hoffman Conversion

  7. #7
    Join Date
    Mar 2013
    Location
    Chicago
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    show me Gill. Ill do them here not on u-tube.

    20190910_084845.jpg

    Some proper bits for a Liberty Prevo. Pictured r the king a the road height valve the R6 brake relay and the 1 way check valve for the primary tank.

    We r on to the front. We replaced all 3 brake relays all the rubber brake hoses all the chambers and diaphrams We also replaced the check valves on the primary ans secondary tanks the the emergency brake relay and the ride height valves on the entire chassis. Thats in addition to pulling all the hubs to the spindles inspecting and cleaning the brakes and reassembling with all new seals and oil, new brake rollers and return springs. 10 air bags and 10 new shocks r icing on the cake.

    20190910_084932.jpg

    Item 8
    The 4 air bag straight axle steer axle.

    20190911_103831.jpg

    20190911_103839.jpg

    20190911_103844.jpg

    1/4 in copper line. Very correct. Still seals up after all these years.

    20190911_103855.jpg

    20190910_085003.jpg

    And the regular suspect the drag link dirt boot. Either yours is replaced or it needs to be. Some things never change.

    Ok this is something special. The 4 bag straight axle steer axle. These r the strongest and best riding front axles prevo EVER put on a bus. To this day. They went away with the 83 model year what a shame.

    20190910_114617.jpg

    A happy happy 83 look at er shes glowing.
    Last edited by Joe Camper; 09-11-2019 at 12:10 PM.
    1990 Peterbuilt 377
    3406 B Caterpillar
    13 Speed Roadranger
    No Norgrens


    1 day on paper no machines

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