Allison 1000

[lindsayc]

Hi fellow RVers Ineed someAllison 1000 advice. Firstly I was advised at trans service to run Transynd after 9000 km I have a sticky solenoid. Had it Allison tech today many codes cleared and he asked that I take the RV for a 50km drive.Checked no codes found. No doubt the sticking solenoid will raise its head again in the future. He said maybe I should not have changed to Transynd. Sorry I do not have the codes. Whats the Allison specialists advice 2005 Kodiak 6.6l Turbo A class here in Australia. I must add the RV after a 4500 trip then sat for 4 months then problems started.Would it be cheaper to purchase a new valve body.What is the Allison advice please Many thanks in advance.

[grindstone01]

Replacing a shift solenoid on a Allison trans is not that difficult.

https://www.youtube.com/watch?v=m_CSB2-kuOs

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I had a Buick Lesabre I bought with the understanding the transmission was going bad because it was shifting hard. I replaced the springs in the shift solenoids for under $10 and the trans ran great.

[consolenut]

Allison recommends only changing the spinon filter on 1000. The only time the pan and paper filter is changed is in a full rebuild. Different and hard to swallow but that comes from allison

[grindstone01]

Allison recommends for heavy service to change the spin on filter every 10k miles and to drop the pan and change the oil and internal filter every 50k miles. I stopped at a Allison service garage and had a good discussion with the service techs and that is what they suggested.
Not changing transmission oil per manufactures recommendation is the biggest cause for trans failures.

[consolenut]

got that from allisons website based on 50 miles a day 7 days a week in the calculator.

[grindstone01]

Towing is a whole different situation. But if that maintenance schedule makes sense to you, it's your transmission.
I tow 27k lbs and change my Allison trans synthetic oil/internal filter at 50k miles. I don't mind spending a few $$ to keep my trans in top condition. My retired 06 Chevy DRW w/Allison trans had 325k miles on it hauling hot shot loads and I never had one trans issue. The maintenance $$ spent were a good investment.
As a side job, I used to buy late model cars with 100k to 150k miles on them for cheap with ruined transmissions from lack of oil changes. I could swap out a trans or even motor in a weekend. It was a lucrative side job.
Not changing oil in a trans/motor is the biggest cause of premature failure! Besides, changing oil is not that hard to do. For the trans, it involves removing 20 10mm bolts, prying the pan off and prying the internal filter off, push on new filter, install pan w/bolts and fill trans with new oil. It's an easy 1 hour job.

[lindsayc]

Thanks for your help and suggestions finally located problem solenoid D is sticking/failing intermittently will replace all 7 solenoids in the New Year.
Also do the second change to Transynd Oil and external filter.

[grindstone01]

Originally Posted by lindsayc

Thanks for your help and suggestions finally located problem solenoid D is sticking/failing intermittently will replace all 7 solenoids in the New Year.
Also do the second change to Transynd Oil and external filter.

On some transmissions, I have disassembled the solenoid and found a broken spring inside. Sometimes a solenoid can be fixed with just a couple dollar new spring. You should be able to find a replacement spring at a hardware store.