DingoNutz
Active member
Make sure you don't get it power flushed. Allison does not recommend that procedure.
07 Allison Problem
- Thread starter rsaint
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we've done hundreds of power flushes...... Never a single problem......... Jus' sayin'
DingoNutz
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because it basically says, some shops not doing proper 100% flushes and inconsistent........ Like i said already we've done hundreds all the way back to 2004 when we got our first transmission flush unit
DingoNutz
Active member
I'm not saying service centres aren't performing the procedure, I'm just trying to inform the OP what Allison recommends. Apparently, I guess it also depends on what type of a "flushing system" is being used. The following is a quote from a retired Allison fluids engineer:
"Recommended service for the Allison is drain, refill and change the spin on filter every 50K (25K severe). Don't forget to remove the magnet from the old filter wipe it clean an place on the new one. Fill the new filter with ATF before installing. You need about 8 qts.
Dealers recommend the transmission flush service (and many other unecessary services) because it makes them MORE MONEY. "Flushing" may or may not cause damage to the Allison depending on the type of equipment being used. Passive exchange equipment is like automating the "HOOT" method is fine because the TRANSMISSION PUMP is doing the pumping. Power flush machines that use a pump to exchange fluid can cause many problems up to breaking the trans oil pump gears, delaminating the clutches, and sticking valve body valves and therefore MUST be AVOIDED.
DEX6 is fine in any 2007 or later Allison. Use DEX3 in a 2006 or earlier. TranSynd TES-295 synthetic is best for all Allison model years, but not required."
I'm no expert in the field, just trying to help the OP. I wouldn't ever power flush my ally. I did the double drain method and have been running TranSynd for the past 120k with no problems either. He can decide what he wants to do.
That's all for me.
"Recommended service for the Allison is drain, refill and change the spin on filter every 50K (25K severe). Don't forget to remove the magnet from the old filter wipe it clean an place on the new one. Fill the new filter with ATF before installing. You need about 8 qts.
Dealers recommend the transmission flush service (and many other unecessary services) because it makes them MORE MONEY. "Flushing" may or may not cause damage to the Allison depending on the type of equipment being used. Passive exchange equipment is like automating the "HOOT" method is fine because the TRANSMISSION PUMP is doing the pumping. Power flush machines that use a pump to exchange fluid can cause many problems up to breaking the trans oil pump gears, delaminating the clutches, and sticking valve body valves and therefore MUST be AVOIDED.
DEX6 is fine in any 2007 or later Allison. Use DEX3 in a 2006 or earlier. TranSynd TES-295 synthetic is best for all Allison model years, but not required."
I'm no expert in the field, just trying to help the OP. I wouldn't ever power flush my ally. I did the double drain method and have been running TranSynd for the past 120k with no problems either. He can decide what he wants to do.
That's all for me.
tex78
Active VIP Member
Biggest thing with a flush is if its way past due ( dark and burnt some ) is sometimes it cleans too much too fast ( either it stirs stuff up ect ) and can jam valves ect
If u do flushes as preventative maintenance before it gets bad Ur good.
from my HTC
If u do flushes as preventative maintenance before it gets bad Ur good.
from my HTC
- Thread starter
- #27
rsaint
Active VIP Member
Well its got 200,000 and never been serviced.
tex78
Active VIP Member
Ok. How many times have u drained the pan , changed either filter ????
How much towing do ya do ??
from my HTC
How much towing do ya do ??
from my HTC
- Thread starter
- #29
rsaint
Active VIP Member
Never have done any thing to it and always serviced at dealer and u would think it would come up as a service request. All i use it for is towing our 4 horse trailer with full living quarters 25,000lbs full load with efi live.
tex78
Active VIP Member
Dunno. Bet its way past time.
Unless u have had a power train service done ( includes , front rear , t case , transflush ) and didn't know it.
from my HTC
Unless u have had a power train service done ( includes , front rear , t case , transflush ) and didn't know it.
from my HTC
Sound like the 3-5-R piston lip seal is getting wore down and not sealing when cold. If the TCM does not see the turbine speed drop when put into gear then it kick out out of gear and lights up the shift inhibit message.
brian h
Active VIP Member
i recomend not to only change the spin on filter but to drop the pan and change the internal filter also,fill with trans send oil and will probable be ok.if your oil does not smell burnt then clutch packs are ok
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