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Jeroen Sleijpen

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About Jeroen Sleijpen

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    Lance Corporal
  • Birthday 01/01/1
  1. Remember that the GMC CCKW truck was assembled from different factory production units. the black you talk about is a transport protection coating. Remember also that directly after the war all vehicle units went back to motorpool units for repair/overhaul and from there directed back to units or lend lease programs. So sure thing that also your 2 dodges are rebuild somewhere in the past 60 years.
  2. Sorry guys but there was never used a black undercoat! All factory picture from General motors, DPCD group, white, autocar, federal, mack etc show that the bare metal is sprayed with a red or green oxide primer and recieves its final layer of OD. The black "glue" jack refers to is typical post war norwegian preservation.
  3. there are at least 2 in holland.... and 1 in the uk.... but I don't remember the owners at the moment
  4. How can one determine if there are non of those trucks left.... :? I know of the ACKWX several restored and unrestored examples in the US! and even the ACX-504 can be seen there!
  5. AC spark plug manufactured a lot of items during WWII like your cap but also .50cal machine guns air craft parts several truck parts and ofcourse sparkplugs!!!
  6. take out floor in the cab take out the propshaft between box and case take out the speedo cable loosen the crossmember and slide to the rear. take out the pto in case there is one then put jack under the gearbox release all bolts and slide box to the rear. realy one of the easiest trucks to remove the gearbox... much easier then a jeep!!
  7. make sure when you take the top of that all of the gears are still in good shap and not missing any of their teeth. when one brakes of the gear it can cause the trouble that you have The clutch can only be a problem if you select a gear not if everything is in neutral!!! take of the top and put the gears in neutral bij hand. if one of the gears is still driven then take the box out and rebuild. easy job!
  8. just wanted to add a WC to this forum... this is mine at the backcover of a army motors magazine....
  9. strange.... because you are doing everything just fine.... only thing I did was copy paste the link you wrote in your last post...Seems to be that for some reason you can't post pics.... :shock:
  10. Thanks for showing us this nice piece of history John!! I realy liked it.... Keep us informed about the progress you are making! Jeroen
  11. doing fine Llloyd thanks! working on several Macks now... :shock: anyway how is life across the channel?
  12. nope....that is mechanical enginering! and fixing it in the right way:D:D:D btw... you were talking about a guy named Joel...I don't see a post of him...or am I missing something...?
  13. there are 3 types of hydrovac used on the GMC and even an booster on the early ones. Not all of the vacs have a bleedplug... Because of the high pressure that the hydrovac is creating on the brakesystem, you only have to wait a few minutes and then bleed the wheelcyl. Cheers! Jeroen
  14. Jack.... refill the master cylinder again. put a few drops of engine oil in the vacuum chamber of the hydrovac. Then start the engine.... you will see that the majority of air will come back to the resorvoir of the mastercyl. then bleed them the old fashion way.... pressing the pedal few times. hold it under pressure when there is resistance and a helping hand bleeds the brakes one by one starting with the longest line from the mastercyl. keep the resorvoir full at all times. The thing that happened to your truck is that a small amount of air came in the line to the hydrovac cylinder. this causes the brakes not to work.
  15. Corné the pics you show us is a Airborne CCKW 353 cargo truck Not a dump truck. Jack as far as I know only open cab trucks where build in an airborne conversion...So probably the dumptruck you are talking about fitted with a hardcab after the war! Can you get the chassis number? Jeroen
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