From: David Cole (DavidCole@tk7.net)
Date: Thu Jul 24 2003 - 19:45:00 PDT
I agree with Neil. My experience with clutches is that once they slip it
is just like pushing in the clutch, they really slip! If you are in low
range, the clutch won't be tranmitting as much torque, hence no slippage.
If your transfer case had failed sufficiently to actually disconnect high
range by breaking something internally, I would have expected the entire
transfer case to go south fast. I'd bet that your transfer is fine, but
your clutch is shot. As an experiment, put the transfer in high range and
start out in 1st gear. Does it move? If so; clutch shot, transfer fine.
Dave
On Thu, 24 Jul 2003 09:29:43 -0400, Neil E. Amrhein <neil@compu-powr.com>
wrote:
> John,
> I would not bet against the clutch. The load against the clutch in low
> range will not be as severe as in high range, so it might not slip in low
> range as easily. If something broke in the transfer case, I would expect
> it
> to be sudden and brutal, given the strength of the parts involved. That
> does
> not really sound like the case from what you described.
>
> --Neil
>
> ----- Original Message -----
> From: <JHUTT7107@aol.com>
> To: "Military Vehicles Mailing List" <mil-veh@mil-veh.org>
> Sent: Thursday, July 24, 2003 9:10 AM
> Subject: [MV] M816 transfer Case Question
>
>
>> List (and especially the guys with the big trucks),
>>
>> Last weekend I hauled a 155 mm Howitzer from our museum to a show in a
> local town, about 25 miles away. On the way back to the museum, I lost
> high
> range in my M816 wrecker. Believe me when I say that pulling a 14,000
> pound
> gun at 25 miles per hour, on the highway, at 85 degrees, is not an
> experience that I would recommend. Had to drive most of the way in low
> range. Had to stop twice along the way to get one of our Jeeps re-started
> and back on the road. An interesting day!
>>
>> I had just finished climbing a fairly long hill in town, at about 10 mph
> and only turning about 1000 rpm. (I was following another vehicle, and he
> kept slowing down.) As I got to the top of the hill, it seemed as if the
> clutch had disengaged. The rpms rose, and the vehicle slowed down. I
> thought
> that I had lost the clutch, but that wasn't it. I tried low range, and
> the
> truck moved forward, so I knew that I could, at least, move it. That
> began
> the long drive home.
>>
>> My question for this learned group is: What happened? Is it likely that
> something major broke down inside of the transfer case? Is there some
> kind
> of adjustment that I need to do? I have the 260-34 and 34P. I plan to
> take
> next week off and work on the beast, but any hints or suggestions would
> be
> appreciated. If it should become obvious that the only solution is to
> replace the transfer case, does anyone have one available, and what do
> they
> cost? Any and all replies will be appreciated.
>>
>> Please reply to the list. Not only is this something that others might
>> be
> interested in, it makes for a lot less hassle for me with the email
> system
> that I have to work with.
>>
>> Thanks in advance,
>>
>> John
>>
>> --
>> John Hutterer
>> Senior Engineering Lab Tech
>> Deltec Inc.
>> Saint Paul, MN
>> 651-628-7107
>>
>>
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>>
>
>
> ===Mil-Veh is a member-supported mailing list===
> To unsubscribe, send e-mail to: <mil-veh-off@mil-veh.org>
> To switch to the DIGEST mode, send e-mail to <mil-veh-digest@mil-veh.org>
> To reach a human, contact <ack@mil-veh.org>
>
-- Dave
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