Jump to content

mechohaulic

BMT Benefactor
 View Profile  See their activity

  • Posts

    3,569

  • Joined

  • Last visited

  • Days Won

    51

 Content Type 

Everything posted by mechohaulic

  1. mechohaulic
    calling them weak is being real nice. back in '73-74 i filled out more warranty paperwork. should have made up a big sign saying ==I know all they do is make noise . gets me thinking of all the "first I 've seen. == dynatards; kelsey-hayse disc brakes , one positive was the 866 v-8. . dynatards just didn't belong in same category as the jacobs (back then ). course with the dynatard you didn't have to buy 8 in exhaust stacks = they made enough noise.
  2. mechohaulic
    most slider 5th wheels were 24 inch travel. oil company had to sign off on lots of legal paperwork for the 48 I mounted on the R685. back then the rules started to show up. a fixed wheel was either on center or 6 ahead. a 24 inch slider was 6 in behind center . keep in mind wheel base and customer request set mount locations also. new government regs narrowed mounting options. we all know how knowledgeable the government people are. ask one to find the 5th wheel and they go to the cab, no that's a steering wheel it's not counted as a 5th wheel.
  3. mechohaulic
    I think people here are missing the point;;it's not about the global warming repair nor the making electricity to save the planet. it's about what's in it for me and how much of that survey money is going into my pocket. greed has doomed mankind . the ones boasting how they will =save the planet - are the ones behind company's doing the damage.
  4. mechohaulic
    when walking down the diagnostic road , if you don't go on the side trails , you can never expand your knowledge of what could be . oil analyzing is always a critical part of engine diagnostics. this case a noise seemingly coming from #1 cyl may be results of diluted oil in a weak exhaust solenoid . of course I agree. my "book of knowledge " has many blank pages waiting and hoping to be filled in with updated learning from all the talent on this site.
  5. mechohaulic
    while at the Mack dealership, I mounted a 24 in fixed 5th wheel on a brand new R685st. shortly after it came back in for a new 24in sliding 5th wheel . not long after it came back and I mounted the one and only 48in slider ever done . seems the oil company moved a short pup trailer once a month; not enough to justify another tractor. in furthest rear position the 5th wheel ears hung over truck frame rails. actually saw it going down the highway once. tractor almost as long as trailer.
  6. mechohaulic
    how bad was damage on the spun a bearing engine? repair to 350 with engine brake not a more feasible idea VS change-over to a 300 possibly unable to have engine brake ??? repair a bearing spin instead of camshaft change.
  7. mechohaulic
    10-4 on the reel to reel. age factor takes place when a cassette (picture) is new compared to the "modern" 8 track which was great. LOL . almost think my first vehicle had stone wheels and hole in floor to use your feet to make it move.
  8. mechohaulic
    would you believe TOOOOO old to remember . I remember doing it can,t remember why. that's OLD.
  9. mechohaulic
    early dyna versions the exhaust valve was extremely loose until it was brought up to TDC . is it possible to know internal components by removing valve covers / checking valves ???
  10. mechohaulic
    if the oil was being diluted; would that not lower oil pressure ? more before changing exhaust sound. oil school test (before high -tech heat sensor guns) was the white/ yellow crayon on each exhaust port . check which melted ; changed color // which did not. or the Polack way ::: put your finger on each cyl.🥵
  11. mechohaulic
    not sure of the internal changes on '78 engine. based on comment " engine sounds as if dynatard was working on #1 cylinder, to me that would indicate a dyna solenoid stuck . any other situation such as loose valve adjustment would give a tapping sound. design changes in exhaust solenoid must have taken place since the valve covers no longer have expanded housing over exhaust. is it possible for solenoid to collapse? when adjusting early dyna's each cyl had to be adjusted individually when on TDC, when brought up to number #1 how are the adjustments???
  12. mechohaulic
    the new style cabs'-R-_-U--_-F's saved the brand more important as noted, new leadership did more. Mr . Hanson took the brand to a new future. east coast was always Mack country. unfortunately, as it is written; things change.
  13. mechohaulic
    perfection always takes time; usually in the end worth every minute spent. engine lookin good. I stopped and talked to Mr. Rockwell few days ago. un be knowns to me gent sitting in the group was Dom Moffos Jrs son. he's following in Dad:: Jr// Grandads /SR's"" foot steps. with the trucking.
  14. mechohaulic
    by '78 I would expect all the exhaust push rods have been changed to solids. by chance did you pull #1 push rods for inspection? you state it had a dynatard sound. would think that indicates it is dynatard equipt.
  15. mechohaulic
    based on days of old ;before all this electronic stuff I would go with a bad valve/ seat. no noise out air cleaner puts you down a different road (somewhat). valve might have small piece off or crack. from top side everything will look and adjust ok. bigger part of valve missing and you would know it. bad injector should have some type of smoke indication out exhaust if it's missing enough for noise.
  16. mechohaulic
    starting fluid ;; old school , didn't think that technic was allowed or used anymore. very light on the spray also. have to be cautious suggesting that type of test in todays world. too much or spray hitting hot exhaust will change purpose of test and fire extinguish test will take place. or inventory check on first aid kit.
  17. mechohaulic
    this is the tool of which i mentioned. wasn't too sure of the switch showed . my day most were on brake pedal valve. another positive moment old school meets new school. is that were the title intermediate school came from
  18. mechohaulic
    side with magnetic plug really isn't for filling. inside there is a troth which catches oil to bring up foreign objects. that's main reason you had challenge to use as filler hole. opposite side is full open to fill.
  19. mechohaulic
    defiantly isolate whether the problem is in tractor or trailer first. my day a test light was used ; now it a meter used. there is a tool which plugs in to light cord which will show what works. makes life easier when you sit in cab with light cord check each application. could be broken wire in trailer. do brake lights work on tractor?? not sure of wiring on "new "trucks. is the picture a brake light switch or low air buzzer sender etc. fuses check out ok ???
  20. mechohaulic
    use caution with the shop air. shop set for 150 lbs , don't want someone getting hurt . those old screw together brake cans might not want that much air after sitting quite for 30 yrs . spray the clevis pins with penetrating oil . just enough air to make things move. trace the copper lines completely if pressures are low. possibly a crushed line restricting air flow. thanks fr updates. side note:: still haven't found LT mack model address
  21. mechohaulic
    as earlier stated, if this unit is more for show not hauling a trailer or tag along having brakes ; another option (cheap) would be plug feed line to old style TTP (top line) AT THE AIR TANK for appearance it would look good. technically with the right side plugged valve has not been doing anything now except giving unit an air leak.
  22. mechohaulic
    didn't see anyone mention a magnet , thought possibly this mind was slipping (again) and magnets were no longer there. thanks for the positive reassurance.
  23. mechohaulic
    if it's getting "an oil change (trans fluid)" did you pull the side plug and check magnet for foreign objects == they still have magnets don't they ???? never did a tipping o=ring repair. darn doesn't that have to almost stand on it's ass/??
  24. mechohaulic
    old post follow up. I personally would hope for peace throughout the world not only that region. for nothing more then the sake of my grandchildren and their generation.
  25. mechohaulic
    line left rear (loop) from trolley; line RIGHT REAR from treddle (brake) valve. the Tee fitting front middle line to right covered with autoloom goes to rear axle brake quick release valve ?? line straight out (uncovered) is line going to TTP valve left side ??? if so that's a match and makes sense now . as earlier stated plugged line would go to trailer .

BigMackTrucks.com

BigMackTrucks.com is a support forum for antique, classic and modern Mack Trucks! The forum is owned and maintained by Watt's Truck Center, Inc. an independent, full service Mack dealer. The forums are not affiliated with Mack Trucks, Inc.

Our Vendors and Advertisers

Thank you for your support!

Mack Related Links

Popular links

BMT Forum Logo

HTML tutorial
×
×
  • Create New...