From: Joe Foley (redmenaced@yahoo.com)
Date: Thu Nov 25 2004 - 09:48:06 PST
--- JoeYoungInc@aol.com wrote:
> >I always double clutch between 3 and 4 in the M35
> diesel
>
> This could be a case of a worn 3-4 synchro, unless
> your're
> shifting too fast. I've encountered nice and tight
> trans
> that would not allow going into a gear rapidly while
> the
> sync was matching gear speed.
> The syncs in my MB are well worn and the only way to
> shift
> it without grinding is to double clutch.
> My semi had a Road Ranger non-sync transmission.
> Uphill,
> downhill, loaded, empty or bob tailing didn't
> matter; I
> never used the clutch except starting off and
> stopping.
> I could almost speed shift it, but a 5-speed Mack I
> drove
> without clutching required allowing the engine to
> drop
> almost to idle in neutral before hitting the next
> higher
> gear. The Road Ranger had a five hundred rpm spread
> between gears, so coming out of a gear at about 2200
> rpm,
> I'd slip into the next gear at 1700, though I only
> looked
> at the tach a couple of times, out of curiosity.
> Drove by
> ear. The only time I encountered gear grinding was
> when I was learning to shift clutchless. It didn't
> like
> double clutching, shifted best without clutchin'.
> Some
> M35A2 trucks I had shifted best when double
> clutched.
> One of the main problems I've often seen is shifting
> the
> M35 diesels too fast, not allowing time for the
> syncs to
> do their job.
+++++++
It's my suspicion that that is why they have the "H"
pattern, too. To force the dirver to shift more
slowly.
Joe
Here's and interesting one:
http://www.cbsnews.com/stories/2004/11/23/health/main657154.shtml?cmp=EM8707
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