This group provides a forum for owners and operators of diesel powered motorhomes and 5th wheel tractors to discuss mechanical issues, regulatory issues (US, Canada), ownership, insurance, campground accommodations, trip reports/suggestions, and other topics relevant to large RVs and the people who drive them.
Am experiencing shift to drive mode. Checked all vacuum lines.
300SD with 245K shifts into 2nd and 3rd normally but stays on 3rd and will not shift to fourth or drive. Is there any adjusments or do I need to change transmission fluid ? Thanks for any help.
Good morning Tony ;
There is no joy in vacuum pumps , they plain suck .
FWIW ,the correct torque of any screw on any German Vehicle , will render if vibration proof and when you loosen it for the fist time since initial assembly or after repairs including the correct , ' Just So ' torque , you'll both feel & hear a "click " sound as it begins to turn .
This means you must always use correctly fitting tools and clean the screw slots before applying turning force , often it's just a matter of applying the correct amount of force for a moment then it'll go "cick " and back out easily after that .
Germans , weird & wonderful Engineers , I wish they'd share these trade secrets more often .
I see the later model OM617 engines come with allen headed socket screws from the factory *but* if you fail to clean out the accumulated crud , they'll strip easily , just like the slotted Cheese headed screws on the older ones .
Nate
Tony wrote:
>
> Spent the morning wrestling with taking off the vac pump, I get my hands on the twerp who torqued those bolts on i'll have his guts for garters. To get the bottom one, I took out all the other bolts & had swmbo rock the pump housing, while I used a pry bar to hold the allen key in and turn the wrench at the same time. UGH. Think I might go to town and buy cap screws to replace the screw, if I have any money after I leave the bar.
> Oh well, have to put it down until tomorrow when I put the new (pap) one on.
>
