Transmission Filter Kit Guide for the 2012-2022 Blue Bird All American RE
Keep your bus's Allison transmission shifting smoothly by choosing the right filter kit.
- Service intervals are critical; follow the mileage, hours, or time recommendation, whichever comes first.
- These buses use Allison 2500 or 3000 series transmissions, which typically require a kit with two filters.
- Always use an Allison-approved synthetic fluid (like TES 668 or 295) for best performance and to maintain warranty.
- Verify if your bus has a deep or shallow transmission pan before ordering parts to ensure correct fitment.
Symptoms of a Clogged Transmission Filter
A dirty or clogged transmission filter restricts fluid flow. This can starve the transmission of the pressure it needs to work correctly. While outright filter failure is rare, neglecting to change it can lead to serious problems. Look out for these signs that your filter needs to be replaced:
- Harsh or Delayed Shifting: The transmission may hesitate or slam into gear.
- Transmission Overheating: A 'Check Trans' or temperature warning light may appear on your dash. Restricted fluid flow makes the transmission work harder and get hotter.
- Unusual Noises: A whining or buzzing sound from the transmission area can indicate the pump is struggling to pull fluid through a clogged filter.
- Limp Mode: In some cases, the transmission's computer will detect a problem and force the bus to stay in one gear to prevent further damage.
Check Your Service Interval
Allison recommends changing the transmission fluid and filters based on mileage, operating hours, or time, whichever comes first. For buses that spend a lot of time idling or in stop-and-go traffic, the hour-meter is often the most important guide. Consult your owner's manual or an Allison service guide for the specific interval for your bus's duty cycle.
Choosing the Right Aftermarket Filter Kit
Your All American RE is likely equipped with an Allison 2500 or 3000 series transmission. These kits typically include two filters and the required O-rings and gaskets for a complete service. When choosing a replacement, you have a few quality tiers to consider.
Pro Tip: Check Your Pan Depth
Allison transmissions can have a standard (shallow) or deep oil pan, which require different filters. The deep pan is about 4.5 inches deep, while the shallow pan is closer to 2.5-4 inches deep. Always verify your pan depth before ordering to ensure you get the correct kit.
Brand Quality Tiers
- OEM (Allison): Genuine Allison filter kits are the benchmark for quality and fit. They are designed specifically for the transmission and are required to maintain extended service intervals when using approved synthetic fluids like TES 295 or TES 668.
- Premium Aftermarket (Wix): Brands like Wix have a strong reputation for producing high-quality filters that meet or exceed OEM specifications. They are a reliable choice for heavy-duty applications and are often considered a direct equivalent to the original part.
- Standard Aftermarket (Premium Guard): These brands offer a cost-effective solution for regular maintenance. While generally well-made, they may use different materials or have slightly less filter media than premium or OEM options. They are a suitable choice for owners on a budget who follow standard service intervals.
Estimated Cost for Transmission Filter Kit Replacement
| Part Type | Estimated Cost |
|---|---|
| New OEM (Allison) | $45 - $150 |
| New Aftermarket | $38.13 - $132.96 |
| Shop Labor | $150 - $300 |
Note: Costs are estimates and can vary based on location and supplier. The main cost of the service is often the large quantity of specialized synthetic transmission fluid required.
Frequently Asked Questions (FAQ)
How often should I change the transmission filter on my Blue Bird bus?
It depends on your operating conditions and the type of fluid you use. Allison provides schedules based on miles, hours, and months. A typical interval might be every 50,000 miles for the filters, but severe use (like city shuttle routes) may require changes based on operating hours instead. Always use the interval that occurs first.
What comes in a transmission filter kit?
For Allison 3000/4000 series transmissions, a kit typically includes two identical filters (one for the main system, one for the lube circuit), two large cover gaskets, and two smaller O-rings for the filter covers.
Do I have to use expensive synthetic transmission fluid?
To get the best performance and longest life from your Allison transmission, using an approved fluid (like TES 668 or the older TES 295) is highly recommended. Using these fluids is what allows for extended service intervals. Mixing fluid types will shorten the required change interval.
Are there any recalls for the transmission filter on this bus?
No, searches of the NHTSA database did not find any recalls specifically related to the transmission or transmission filters for the 2012-2022 Blue Bird All American RE. Recalls for this bus have addressed other areas like steering, roof panels, and electrical systems.
Technical Specifications
OEM Part Numbers: 29548987 29540493 29545776 29558329 29526899
Kit typically includes two filters (Main and Lube), gaskets, and O-rings. Designed for Allison 2500/3000/4000 series transmissions.
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Blue Bird All American RE: