Yesterday I picked up a recently purchased M35A2 that I've purchased from a private party.
The PO isn't very familiar with Deuces, and accidentally overfilled the crankcase with oil (it is approx 2.5" above the full mark (checked 5mins after running)).
But based on what the PO told me it could be as much as 3 GALS overfull!.
Truck drives great!
BUT has an oil leak around the injector pump and MIGHT also be leaking at the rear main seal (due to overfill, I assume).
I only drove it approx 20miles after pick-up (approx 7miles at city speeds & the rest at 55mph). Drove it straight to a repair shop to have it looked over prior to my 400+ mile drive home.
When I left the seller's house the underside was dry, But after the 20mile drive there is a good coating of oil underneath the engine/trans/xfer.
Appears that most of the oil is leaking from the injector pump (this is already on the list to be fixed). But it might also be spewing oil oit of the hole below the flywheel. (oil spray is visible on the driver's side of the engine & on the driver's side front wheel inner rear fender flap (appears to be from the known injector pump leak) but also under the truck in the center, mostly on the trans & xfercase (guessing this is coming from the rear seal due to crankcase overfill condition)).
I checked oil level again, and it still shows as WAY overfull.
I also crawled under the truck to look at all of the pinion seals & transmission & xfer case seals. Just to be certain that none of these were also leaking. All look fine.
The guys at the repair shop are going to drain off the excess oil (get it back to the proper level), fix the known injector pump leak, clean off the existing oil spray, and start to investigate the source of any additional leaks (might use UV dye to track down the leak source). They will also check all fluid levels.
BTW: They are also replacing a Pass side rear axle seal. This was my initial reason for taking the truck to the repair shop. But this is NOT the source of the oil spray.....
SO MY QUESTION IS:
Has anyone ever overfilled the crankcase, experienced oil leaking out of the rear seal, corrected the overfill, and then had the leak stop once the proper oil level was restored? (i.e. I'm hoping the rear seal is still OK)
Should I expect any impact to the clutch due to possible oil contamination? (seems to shift fine, so I'm hoping it will be OK once the assumed overfill caused leak is corrected.)
What is the function of the 2 threaded holes at the bottom of the bell housing? The one located slightly towards the passenger's side has a plug in it (this one is referred to as being required for deep water fording in the TMs), but the other one (located more towards the driver's side) is open (& appears to always be open in the TMs)
THANKS in advance!
-Bear-
