Cummins cam follower gasket thickness?

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by mile marker 27, Apr 7, 2023.

  1. DUNE-T

    DUNE-T Road Train Member

    7,025
    17,090
    May 10, 2015
    Detroit, MI
    0
    You gotta remove them to find the thickness, it's never correct based on serial number
     
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

  3. SmallPackage

    SmallPackage Road Train Member

    5,713
    18,281
    Dec 20, 2019
    Marion Texas
    0
    Yes. It was a Cummins reman thing to do so. They would recon sc’s to bc 2 specs all the time. Bringing oil psi down stops bearing washout and helps bearings last longer. A Cummins oil pump is like a fire pump. Very high volume. It is overkill already. It pumps a ton of oil if un regulated.
     
  4. mile marker 27

    mile marker 27 Road Train Member

    1,385
    1,715
    Dec 4, 2019
    0
    Dang, what a stack of shims. The original 290 CPL 217, had a 17 button. It always seemed kinda lame for even a 290(compared to my ‘75 W9) but that CPL had a .050 timing. Maybe that was why?
     
    Oxbow and OLDSKOOLERnWV Thank this.
  5. mile marker 27

    mile marker 27 Road Train Member

    1,385
    1,715
    Dec 4, 2019
    0
    The original cam follower gaskets had two stacked and I know that’ll be irrelevant, since I’m changing CPL’s. One gasket is 1mm and the other is .5mm. B9729D4D-A461-4BA0-9AAF-79CFA368B178.jpeg
     
  6. pup

    pup Light Load Member

    252
    256
    Dec 3, 2011
    n.h.
    0
    You should absolutely time the cam followers using the correct tool. All 3 followers can have different thickness shims. What spec are you timing it to?
     
    Oxbow and OLDSKOOLERnWV Thank this.
  7. OLDSKOOLERnWV

    OLDSKOOLERnWV Captain Redbeard

    18,983
    286,353
    Nov 29, 2011
    West Virginia
    0

    Do you remember why Cummins done away with the high pressure oil pump setup…?
     
    Oxbow Thanks this.
  8. OLDSKOOLERnWV

    OLDSKOOLERnWV Captain Redbeard

    18,983
    286,353
    Nov 29, 2011
    West Virginia
    0

    ^^^^^^ this.

    I try to make sure each cam follower is put back in the same location I removed it from. Mine are marked 1 2 3 with a pin punch….
     
    Oxbow and mile marker 27 Thank this.
  9. OLDSKOOLERnWV

    OLDSKOOLERnWV Captain Redbeard

    18,983
    286,353
    Nov 29, 2011
    West Virginia
    0

    I Oxbow’d myself again lol….
     
    Oxbow Thanks this.
  10. mile marker 27

    mile marker 27 Road Train Member

    1,385
    1,715
    Dec 4, 2019
    0
    .035 is what the CPL says. Was recommended by someone on this forum, to set it at .040, with that CPL, for easier cold weather starting.
     
    Oxbow Thanks this.
  11. mile marker 27

    mile marker 27 Road Train Member

    1,385
    1,715
    Dec 4, 2019
    0
    I’ve got 2 jig timers, if I can figure out how to use them. When I get to that point, I may start a separate thread, so y’all can teach me something.
     
    Oxbow Thanks this.
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.