- -----Original Message-----
From: JDDP32B [mailto:JDDP32B]
Sent: Saturday, August 07, 1999 8:00 PM
To: gmcmotorhome
Subject: Re: GMC: When it rains it pours.
To:Emerystora \ America On-Line: (emerystora)
SOB, WHEEZE
Sorry to hear this. Nothing you could to prevent this.
I know your maint. is excellent.
Good into on the tranny shifting. I am going more and more to pulling it
down to second at 2000 and back up at almost 3000. I wish it would do this
by its' self but does not shift like that. Also find I have to hold it down
into second on on ramps or it lugs the motor too hard getting up to speed.
gene
Date: Sunday, 08-Aug-99 12:55 PM
From: Emerystora \ America On-Line: (emerystora)
Subject: GMC: When it rains it pours.
The good news: I'm sure all readers can recall that I had to have an engine
replaced by Buskirk's in Michigan in June. The Jasper engine is running
great. I returned from Michigan and then on to California. I got back last
night and now have about 4000 miles on the engine and all is well. Lots of
power. I haven't added up my mileage yet but will post that later.
Now the bad news: I was rolling along I-15 when I heard a loud bang which
sounded like someone hit my engine block with a sledge hammer. Turns out
that a gear in the final drive broke and blew a hole the size of a golf ball
in the side of the housing. It also momentarily froze the output shaft of
the transmission, cracking the case and hand gernading the guts of the
tranny. I had to be towed 100 miles at a cost of $540 to Los Vegas. A
transmission shop rebuilt a 425 transmission, put in a GM Allison torque
convertor, and a rebuilt final drive. I'm out of pocket another $3000 and
lost 3 days.
I had a chance to talk at length with the fellow that did the rebuilding and
learned a few things from him. For example, when your transmission detects
a lower engine vacuum and downshifts to second gear, it engages two
clutches.
When you manually downshift to second gear it engages the two clutches but
also engages a band. He indicated that manual downshifting also puts about
10 psi more fluid pressure on the clutches so that there is less slippage
and more power. He recommends that if your tranny downshifts on a hill that
you should then manually shift to second, unless it is a relatively short
run to the top of the hill.
I got home late last night. Other than the transmission problem the trip
was a good one. Hotter than h e double l though. Especially from
Bakersfield to Barstow and to Los Vegas. About 105 - 110 in the shade.
It was great to see my new Grandson. Also really enjoyed meeting Gene,
Glen, Henry and Manny.
I've got a bit of unpacking and cleaning up to do. I'll put together the
info later on a couple of things that I promised to do when I got back.
From: JDDP32B [mailto:JDDP32B]
Sent: Saturday, August 07, 1999 8:00 PM
To: gmcmotorhome
Subject: Re: GMC: When it rains it pours.
To:Emerystora \ America On-Line: (emerystora)
SOB, WHEEZE
Sorry to hear this. Nothing you could to prevent this.
I know your maint. is excellent.
Good into on the tranny shifting. I am going more and more to pulling it
down to second at 2000 and back up at almost 3000. I wish it would do this
by its' self but does not shift like that. Also find I have to hold it down
into second on on ramps or it lugs the motor too hard getting up to speed.
gene
Date: Sunday, 08-Aug-99 12:55 PM
From: Emerystora \ America On-Line: (emerystora)
Subject: GMC: When it rains it pours.
The good news: I'm sure all readers can recall that I had to have an engine
replaced by Buskirk's in Michigan in June. The Jasper engine is running
great. I returned from Michigan and then on to California. I got back last
night and now have about 4000 miles on the engine and all is well. Lots of
power. I haven't added up my mileage yet but will post that later.
Now the bad news: I was rolling along I-15 when I heard a loud bang which
sounded like someone hit my engine block with a sledge hammer. Turns out
that a gear in the final drive broke and blew a hole the size of a golf ball
in the side of the housing. It also momentarily froze the output shaft of
the transmission, cracking the case and hand gernading the guts of the
tranny. I had to be towed 100 miles at a cost of $540 to Los Vegas. A
transmission shop rebuilt a 425 transmission, put in a GM Allison torque
convertor, and a rebuilt final drive. I'm out of pocket another $3000 and
lost 3 days.
I had a chance to talk at length with the fellow that did the rebuilding and
learned a few things from him. For example, when your transmission detects
a lower engine vacuum and downshifts to second gear, it engages two
clutches.
When you manually downshift to second gear it engages the two clutches but
also engages a band. He indicated that manual downshifting also puts about
10 psi more fluid pressure on the clutches so that there is less slippage
and more power. He recommends that if your tranny downshifts on a hill that
you should then manually shift to second, unless it is a relatively short
run to the top of the hill.
I got home late last night. Other than the transmission problem the trip
was a good one. Hotter than h e double l though. Especially from
Bakersfield to Barstow and to Los Vegas. About 105 - 110 in the shade.
It was great to see my new Grandson. Also really enjoyed meeting Gene,
Glen, Henry and Manny.
I've got a bit of unpacking and cleaning up to do. I'll put together the
info later on a couple of things that I promised to do when I got back.
. When you get over the shock, would you
