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Showing results 1 to 50 of 704
Search took 0.71 seconds. Search: Posts Made By: hzjcm8
Forum: Allison Transmission Forum 09-26-2023, 01:59 PM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
I recommend checking the fluid level as "mushy"...

I recommend checking the fluid level as "mushy" or harsh shifts could be related to air in the fluid. Check the fluid level once the fluid temperature reaches at least 140F. You'll want to...
Forum: Allison Transmission Forum 06-18-2023, 06:38 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
Sorry. That is not within my area of expertise.

Sorry. That is not within my area of expertise.
Forum: Allison Transmission Forum 06-13-2023, 09:43 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
Sorry. Long weekend with grandchildren playing...

Sorry. Long weekend with grandchildren playing softball and baseball. I would do a fluid analysis of the transmission fluid and the engine coolant to see if you've got an internal leak. Should...
Forum: Allison Transmission Forum 03-19-2023, 09:40 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
Sounds like a possible low idle engine problem or...

Sounds like a possible low idle engine problem or perhaps a transmission lock-up clutch issue. You can check for fault codes on the PBSS (push-button shift selector). I suggest you locate your...
Forum: Allison Transmission Forum 03-19-2023, 09:25 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
There's no need to change the pan filter except...

There's no need to change the pan filter except at overhaul. Just change by removing the drain plug and draining the fluid from the drain plug hole. Then, install the new fluid by adding it...
Forum: Allison Transmission Forum 03-04-2023, 09:32 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
No. In my opinion, calendar time is less...

No. In my opinion, calendar time is less important as compared to mileage. I'd go with the 75,000 miles on the filter. The pan filter does not need to be changed. The only filter change on...
Forum: Allison Transmission Forum 10-06-2022, 07:45 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
I don't believe the 3000/4000 Series ever had...

I don't believe the 3000/4000 Series ever had magnets. My bet is that someone added them. The "Don't forget to transfer your magnets" statement would be associated with the 1000/2000 Series...
Forum: Allison Transmission Forum 08-31-2022, 08:46 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
You may use any of the TES-295 or TES-668...

You may use any of the TES-295 or TES-668 products listed on the Allison Transmission website at https://www.allisontransmission.com/parts-service/approved-fluids/on-highway-fluids. They are all...
Forum: Allison Transmission Forum 05-02-2022, 04:54 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
Dearranged, I've never actually done the...

Dearranged,

I've never actually done the experiment; but, I'm sure it's fine to drain the transmission at ambient temperature especially since you're doing the double drain and refill. I would...
Forum: Allison Transmission Forum 04-23-2022, 07:39 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
Yes. TranSynd can replace DEXRON-II and...

Yes. TranSynd can replace DEXRON-II and DEXRON-III where they are called for in Owner's Manuals. See attached file for information about history of GM's DEXRON specification.
Forum: Allison Transmission Forum 04-05-2022, 07:45 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
Thanks Sundancer, It's true. As you suggest,...

Thanks Sundancer,
It's true. As you suggest, Allison owners can only assess the true condition of their fluid and transmission through transmission fluid analysis !!!

Here's a link to my...
Forum: Allison Transmission Forum 04-05-2022, 07:40 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
Castrol TranSynd has always given a...

Castrol TranSynd has always given a yellow/greenish tint to parts which we never worried about. We believed it was just the dye changing colors since the dye is not as temperature stable as the...
Forum: Allison Transmission Forum 03-23-2022, 09:01 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
When sampling the Allison transmission, you'll...

When sampling the Allison transmission, you'll need to purchase a JGOA25 test kit. The test kit includes pre-paid testing and comes with a sample jar, tubing and a sample submission form. You'll...
Forum: Allison Transmission Forum 01-14-2022, 09:11 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
You're getting outside my area of expertise; but,...

You're getting outside my area of expertise; but, I'd have someone check the universal joint(s) to see if there's something wrong there. I think a vibration in a specific speed band might indicate...
Forum: Allison Transmission Forum 01-10-2022, 08:14 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
Could be that there was a significant change in...

Could be that there was a significant change in fluid temperature between the different readings. The fluid has a "coefficient of expansion" factor meaning that for every degree in temperature...
Forum: Allison Transmission Forum 01-10-2022, 08:07 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
The TES-668 fluids are backwards compatible; so,...

The TES-668 fluids are backwards compatible; so, a licensed TES-295 is OK for use and the drain intervals should be based on fluid analysis since these fluids have exceptional performance and...
Forum: Allison Transmission Forum 12-28-2021, 02:01 PM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
You should be able to recover a fault code using...

You should be able to recover a fault code using the push button shift selector be entering diagnostics mode. It may be fluid level related and it may have been because you were on a non-level...
Forum: Allison Transmission Forum 12-09-2021, 08:07 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
Way too often !! Since TranSynd (or other...

Way too often !! Since TranSynd (or other Allison approved and licensed TES-295/668 fluids) are very durable, and unless you have some sort of contamination issue, once a year is sufficient to...
Forum: Allison Transmission Forum 12-09-2021, 08:03 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
Yes. Allison Engineering considers (2) drains...

Yes. Allison Engineering considers (2) drains and refills to be 100% filled with TES-295/TES-668 fluids.
Forum: Allison Transmission Forum 10-25-2021, 05:10 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
NO PROBLEMS: The Allison TES-668 specification...

NO PROBLEMS: The Allison TES-668 specification replaces the older TES-295 specification. Approved TES-668 specification fluids are fully compatible with the older TES-295 specification fluids.
...
Forum: Allison Transmission Forum 10-25-2021, 05:00 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
2-4 quarts low

2-4 quarts low
Forum: Allison Transmission Forum 10-25-2021, 04:59 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
The fluid and filters are likely still in good...

The fluid and filters are likely still in good shape. So, just have it analyzed with the JGOA25 Ultimate Oil Analysis Kit which includes Particle Count and ISO Cleanliness Code for the fitration...
Forum: Allison Transmission Forum 10-18-2021, 08:39 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
Sorry, but that's way outside my area of...

Sorry, but that's way outside my area of expertise. My only recommendation is to go to the Allison Transmission sales and service locator, https://allisontransmission.com/sales-service-locator, and...
Forum: Allison Transmission Forum 10-11-2021, 07:21 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
It's on the Allison Approved Fluids List so go...

It's on the Allison Approved Fluids List so go for it !!!
App Num: AN-191011
Forum: Allison Transmission Forum 10-11-2021, 07:17 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
Test it through JG Lubricant Services. It will...

Test it through JG Lubricant Services. It will most likely still be like new. DO NOT USE any DEXRON-III product as they are no longer licensed by GM. Some could effect seal hardness where...
Forum: Allison Transmission Forum 09-12-2021, 03:07 PM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
The data show that it's not pure TranSynd, but...

The data show that it's not pure TranSynd, but instead it appears to be a mixture. The oxidation (by FTIR) value is not quite high enough, the viscosity is slightly high and the zinc value is a bit...
Forum: Allison Transmission Forum 07-08-2021, 07:36 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
Yep .... sounds good !! Warmed and circulated...

Yep .... sounds good !! Warmed and circulated fluid will typically give a "more representative" sample.
Forum: Allison Transmission Forum 07-08-2021, 07:33 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
Discount Code = IRV2

Discount Code = IRV2
Forum: Allison Transmission Forum 07-08-2021, 07:32 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
We used it as "FACTORY FILL" starting in 1999, as...

We used it as "FACTORY FILL" starting in 1999, as I recall. Some chassis OEMs were already installing TranSynd at the time. Then, by the early 2000s, most chassis OEMs were filling with...
Forum: Allison Transmission Forum 07-08-2021, 07:26 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
Transmission fluid sampling is the very same as...

Transmission fluid sampling is the very same as engine oil sampling. Run the engine for around 10 minutes, which will also run the transmission pump and circulate the fluid in the sump. Then,...
Forum: Allison Transmission Forum 06-13-2021, 05:47 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
Up early this morning .... grandson has a...

Up early this morning .... grandson has a baseball game !!

This is outside my real expertise; but, no. I believe the Allison TCM (Transmission Control Module) must see both input speed...
Forum: Allison Transmission Forum 06-07-2021, 05:27 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
In my post, I'm referring to the Sinopec ATF...

In my post, I'm referring to the Sinopec ATF Synthetic Automatic Transmission Fluid. Again, if it's not on the list, then don't use it. There's a good reason that some fluids are not on the list...
Forum: Allison Transmission Forum 06-07-2021, 05:23 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
The DISCOUNT CODE is simply IRV2.

The DISCOUNT CODE is simply IRV2.
Forum: Allison Transmission Forum 06-07-2021, 05:21 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
Sorry, but I'm not going to "purchase some of the...

Sorry, but I'm not going to "purchase some of the lower cost oil and test it then you will have the data and facts to make a true and factual opinion."

My opinions are based on many years of...
Forum: Allison Transmission Forum 06-01-2021, 05:16 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
With regard to this new fluid, if it's not on the...

With regard to this new fluid, if it's not on the Allison Approved Fluids List, then it's not approved for use. I would not recommend that you use it.
Forum: Allison Transmission Forum 05-28-2021, 07:25 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
Yes. That is correct.

Yes. That is correct.
Forum: Allison Transmission Forum 05-15-2021, 06:02 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
Castrol TranSynd, or any of the other TES-295...

Castrol TranSynd, or any of the other TES-295 approved fluids, will be fully compatible with your old DEXRON-III fluid. Use genuine Allison filters and make sure you get the latest part number...
Forum: Allison Transmission Forum 05-12-2021, 08:04 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
Typically, samples are processed within 24-48...

Typically, samples are processed within 24-48 hours after the sample is received unless we get the samples on Friday. The labs do not process samples on the weekends so it's typically 1-2 business...
Forum: Allison Transmission Forum 04-27-2021, 08:37 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
You know ..... that was my goal but I never got...

You know ..... that was my goal but I never got that far. I always knew that there should be a way to lower the cost to produce TES-295 fluids, at some point. However, the technology (additives...
Forum: Allison Transmission Forum 04-25-2021, 08:02 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
Ed, Sorry but I don't have as much time to...

Ed,

Sorry but I don't have as much time to get on here as I used to. You know ... grandkids' ball games and such !!!

Upgrading specifications is common and has to do with new developments...
Forum: Allison Transmission Forum 03-27-2021, 09:48 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
Jim, You can call me if you'd like. I can...

Jim,

You can call me if you'd like. I can be reached at 877-971-7799 (Ext 2). That would be better than writing "a book" here.

We (Allison Engineering) used to allow SAE 10W, 30 and 15W-40...
Forum: Allison Transmission Forum 02-04-2021, 06:23 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
Do not use DEXRON-IIIH fluids as they may be...

Do not use DEXRON-IIIH fluids as they may be incompatible with your seals. Also, do not use DEXRON-VI. My recommendation is to purchase an Advanced Oil Analysis Kit (JGOA22 or JGOA24) from JG...
Forum: Allison Transmission Forum 07-25-2020, 05:08 AM
Replies: 504
Views: 152,103
Posted By hzjcm8
There's no required "break-in" period for Allison...

There's no required "break-in" period for Allison transmissions, whether new or rebuilt.
Forum: Allison Transmission Forum 07-14-2020, 05:14 AM
Replies: 504
Views: 152,103
Posted By hzjcm8
No. Get a fluid analysis done and let me take...

No. Get a fluid analysis done and let me take a look at it. If it's Castrol TranSynd, then it's probably still good.
Forum: Allison Transmission Forum 07-14-2020, 05:05 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
As long as the transmission is in lockup and...

As long as the transmission is in lockup and you're in the same gear, then engine RPM changing with the same road speed (MPH) doesn't make sense. Perhaps you're in converter mode with ECONO off. ...
Forum: Allison Transmission Forum 07-14-2020, 04:43 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
Elbridge, The Detroit Diesel used oil analysis...

Elbridge,
The Detroit Diesel used oil analysis shows too high calcium and too low viscosity to be Castrol TranSynd; so, I'm guessing this analysis was taken before the changeover.

Also, be...
Forum: Allison Transmission Forum 07-12-2020, 05:30 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
Since you've already installed Castrol TranSynd,...

Since you've already installed Castrol TranSynd, I doubt you'll be changing it for a very long time. I recommend you just do annual fluid analysis which should continue to show that the fluid...
Forum: Allison Transmission Forum 07-07-2020, 09:40 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
99dart, I doubt the fluid is bad but I...

99dart,

I doubt the fluid is bad but I always recommend annual analysis just to ensure against the outside chance of contamination. If you're running TranSynd, it will be good for a very long...
Forum: Allison Transmission Forum 06-22-2020, 08:37 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
Moparjim, I recommend you check the fluid...

Moparjim,

I recommend you check the fluid level first before doing anything else. Check it on a flat surface with the engine running at idle and transmission in PARK. Check it hot, then run...
Forum: Allison Transmission Forum 06-20-2020, 05:24 AM
Replies: 1,496
Views: 468,739
Posted By hzjcm8
Squerly, You'll need the JGVP01 Vacuum Pump...

Squerly,
You'll need the JGVP01 Vacuum Pump (Red, for oil and transmission fluid samples).
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