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Thread: The Early 80's

  1. #11
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    Up until around 94 the only axles that have an emergency brake r the drives. 2 good opperating chambers r safe. If u loose preformance on 1 of the 2 Id be real careful about setting the emergency brakes and walking away with a toad hooked on ANY SLOPE. It might hold it, it might not. If the 1 remaining hub lets say has some oiled up pads from a leaky seal u will be off to the races. Be carful take no chances with chassis that only have emergency brakes on the drives.
    Last edited by Joe Camper; 09-05-2019 at 08:59 PM.
    1990 Peterbuilt 377
    3406 B Caterpillar
    13 Speed Roadranger
    No Norgrens


    1 day on paper no machines

  2. #12
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    Item 3. 1983 Chassis Restoration

    Brake Relays

    20190905_110206.jpg

    20190905_110152.jpg

    The end of 83 and the beginning of 84 thats when the width of the bus went from 96 in to a full 8ft.

    Just as significant a milepost as the 99 to 2000 model year changes were when the XL Became the XLII

    Many other elements changed too. The brake relays r 1 of those other things. The pre 84, 96in buses used R6 relays NOT R12. Its kind of tough to decipher from these photos especially if u dont know what your looking at but these r not r12 and r quite the oddity.

    Im sure of whats here and unaltered and heres why. Another difference is the 96 wides pre 84s have ALL copper plumbing not easy to put anthing other than perfect replacements and thats what im looking at. Prevo Elgin also verifyed it was built with r6.

    Prevo parts doesnt make too many mistakes but the associate verifyed no availability for an original R6 and erroniously shipped us 3 R12s telling us they would work. NOT. Not only would it require major surgery to replumb it because of the copper but more importantly the crack pressures r different r6 r12 and it would alter the dynamics and preformance. In their defence Ive never encountered an r 6 on a semi tractor, dollies and trailers, old ones maybe. Either did a good friend with a similar background OR the guy at fleetpride that has never been asked for 1 in over 20yr.

    Im going to eventually talk to tech at bendex and find out what im told.

    We found new old stock on ebay for 25 bucks a piece. I havent actually pulled these out yet. That will only happen when placed in my hand in a couple days. There r 2 in the back. The front one became really accessable once ive pulled the tires, and shock, and airbag, and hub, and the maxi now its a piece of cake. lol. i can reach right in there. Very nice.

    It would be neglegant on my part to go this deep and leave these in there. This is a job that if a shop was asked to pull this 1 part and nothig else would be a royal pain in the ass task. The back one is entirely more accessable by pulling the base of the bed and removing the engine hatch. Chad tells me hes had it out before its not 15min of time. Ill swab and blast all that down too when I do.

    The R6.......learn somethin new every chassis.

    This wonderful 83 chassis.......Im the best thing thats happened to this bus since Liberty rolled it out the door 37 years ago.
    Last edited by Joe Camper; 09-06-2019 at 12:00 AM.
    1990 Peterbuilt 377
    3406 B Caterpillar
    13 Speed Roadranger
    No Norgrens


    1 day on paper no machines

  3. #13
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    Item 4

    Brake Hoses

    20190906_085725.jpg

    This is a Parker Hose. It has a swivel it is 1/2 in and its a made to length 1 time use throw away. Most chassis now have these.

    20190906_085707.jpg

    20190906_090213.jpg

    20190906_085816.jpg

    Many earlier chassis all the way up to 2000 or so were endowed with Aeroquip 2 Piece swivel ends on the chamber end and a brass 2 piece non swivel on the end that screws into the relay.

    This 83 came with a full set over the years it has been stripped of 3 of them for the lessor brand. Either someone took them and reused them or worse yet they ended up in the garbage. That aeroquip 1/2 by1/2 swivel with adaptor is 70 or 75 bucks. The other brass end is more reasonable.

    These r great hose ends they r forever unless u destroy it trying to remove and disassemble it.

    If your chassis has these dont let some scoostama remove them. For 5 or 6 dollars for the hose and 2 bucks for the brass ring and a few minuites it is totally rebuildable. With a few feet of spare and a couple compression rings u can redo a damaged hose yourself or at lease have the right stuff when the road service shows up.

    Most All the air hose on the bus Is plastic or in the case of this 83 brass. This always takes preferance. Its stronger and lasts longer than rubber.

    However if u have movement between the 2 ends of a line plastic will crack it has to be rubber in these spots.

    Well there is a TOTAL of 8 rubber hoses on the chassis in 84 and 2020 remains the same 8.

    This is the logic behind the design.

    When its time to replace the rubber brake hose the throw away parker hose can for rhe same money be replaced with the reusable ends, the brass 2 piece on both ends. Going forward to the next decade and next replacement the cost is reduced significantly.

    20190906_112654.jpg

    Theres 6 rubber hoses on the back and 2 up front for everybody. Heres the maxi waiting with all its drive hub related buddies waiting to team back up.

    New, return springs, new rollers, new inner seal and gasket, new axle wedges, new tapered brake drum screws and complete drain of drive axle for 5 fresh gal synthetic oil.

    The wheel bearings and races were all very good. The S cam seals and bushings were quite free while showing very little play all the alack adjusters were fine. All 37yr old stuff and still functioning as designed. Thats good juju to let these pieces roll.
    Last edited by Joe Camper; 09-06-2019 at 03:57 PM.
    1990 Peterbuilt 377
    3406 B Caterpillar
    13 Speed Roadranger
    No Norgrens


    1 day on paper no machines

  4. #14
    Join Date
    May 2012
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    Beverly Hills
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    Joe, you're a busy guy. I'll buy you lunch :-)

    BTW, I heard Prevost Parts has a dded a few bucks in their marketing budget for you to promote their parts. Was that a good rumor ;-)

    Keep up the good work!


    Gil and Durlene
    2003 H-3 Hoffman Conversion

  5. #15
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    R U makin smoke?? Where r u? The forum always gets quiet just prior a rally. I sence lot a people movin around. Yall be carful and have fun. I need another couple years before my Pete is finished enough to bring out in public. Then we will run up some miles togeather.

    I want to go find some UFOs that be a fun trip.
    1990 Peterbuilt 377
    3406 B Caterpillar
    13 Speed Roadranger
    No Norgrens


    1 day on paper no machines

  6. #16
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    Item 5

    Shocks and Shock Posts

    20190905_104155.jpg

    20190906_123645.jpg

    20190906_123650.jpg

    All this hardware stuff on pre 84 r different. Same shocks but installation different. First the suds r bolts that go all the way thru the suspension carrage. They also have 2 opposing wedges . Another item is the bolts need collers to go into the shock eyelets. The collers serve a duel purpose and facilitate bottoming out the nut when u run them up. If the long bolts r allowed to loosen up any the wedges start grinding on the tapered seat and if u wollow out those seats thats going to create a lot of time getting straight again.

    Going forward 84 and newer no collers, the post is the correct diamiter and the nut is a lock nut and only tighteded up till the shock bushing begins to buldge. They r often overtightened verses the older stuff that has it nessessary to be tight.

    Also when changing this older stuff if after the shock is removed the bolt and wedges r froze in the hole free it all up dont just throw it all back togeather like that. Id say it would be a good thing to have some wedges and collers coming wirh the shocks when u order them.

    20190907_143447.jpg

    There is 8 seporate pieces of hardware that make a shock post on s pre84. 2 posts per shock, 10 shocks on the bus so it takes 20 assemblies like this for the entire chassis!!
    Last edited by Joe Camper; 09-07-2019 at 03:41 PM.
    1990 Peterbuilt 377
    3406 B Caterpillar
    13 Speed Roadranger
    No Norgrens


    1 day on paper no machines

  7. #17
    Join Date
    Apr 2019
    Location
    Arlington
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    This is fantastic.

    1) Can you also include a description of where you are locating your jack stands and the process you go through to get them to take weight, and then de-weight the suspension / wheels enough to get them off?

    2) What is the torque for the wheel lugs?

    3) Is most of this in the 1/2” ratchet range or do we need to get a good 3/4” set?


    Mark and Debbie Fratto
    1998 Parliament

  8. #18
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    Fratto this thread is maybe 50% or so applicable to your 97 chassis. Right? OK

    650 FT LBS is the wheel nut torque. the tag steer and outer duel nuts r 1&1/2in. The nuts for the inner duels require a special square nut socket.

    U should have a set of 3/4 inch stuff. My resources r limited IGo to harbor frieght and get their Pittsburg Forge hand tools stuff Very very strong guarenteed fraction of the cost, good chineese stuff (it kills me to have to admit that but there u have it) I use many of there tools and very rough with them on a daily basis for your purposes they will be perfect.
    1990 Peterbuilt 377
    3406 B Caterpillar
    13 Speed Roadranger
    No Norgrens


    1 day on paper no machines

  9. #19
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    Chicago
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    20190907_193940.jpg

    The yellow stand is the body support point at the rear. ill gey a closer pic later, its raining. On your chassis there is a thickwalled piece of square stock going from left to right same spot. Place the body support stands there.

    20190907_193830.jpg

    Once you get the weight off the axles and get the wheels off another set of 4 stands go under the suspension at the 4 rear hubs. It does not require a 20 ton jack to get the tires up when the weight has been taken away. Dont kill yourself oversizing. Go to level low all the way up L and R rear. place rear support stands. Dump all air L and R rear. Jack and remove tires and rims install suspension stands lower and remove jack.

    Ill get a couple pics of the correct tools to most easily pull tires.

    Did u get yer fan hub straight?

    Billy if u r reading this could u please send me a picture of those stands u picked up. Also send a pic of that off brand torque multiplier. Thank u

    This old girl is starting to shape up aint she!!!
    Last edited by Joe Camper; 09-08-2019 at 09:58 AM.
    1990 Peterbuilt 377
    3406 B Caterpillar
    13 Speed Roadranger
    No Norgrens


    1 day on paper no machines

  10. #20
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    Location
    Chicago
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    20190908_091148.jpg

    Fratto u have stud piloted hubs and studs and rims. This Is NOT NOT NOT a stud in the photo above. It IS IS IS, the " inner duel nut"

    20190908_091347.jpg

    20190908_091406.jpg

    it requires an insert for a 1,1/2 in socket OR that specific socket.

    20190908_091305.jpg

    so first u put the inner rim on then the ninner nut goes on the stud. There r threads inside and outside of thos inner nuts.

    20190908_091320.jpg

    Once the inner rim is on and nuts tight the outer rim goes up and the outer nuts thread onto the inner nuts.

    Prevo used this old school stuff on the drives for a decade after the trucking industry went to the current hub piloted that only require 1 nut for duels. prevo used these a tic past 2002 or so. Even some of the chassis with drive axle disc brakes still have old style stud piloted components.
    Last edited by Joe Camper; 09-08-2019 at 12:26 PM.
    1990 Peterbuilt 377
    3406 B Caterpillar
    13 Speed Roadranger
    No Norgrens


    1 day on paper no machines

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