Return to the ATSG Home Page                       SonnaxPage Fluid   contamination   levels   are far   higher   after   transmission rebuild      because   removing   all contaminants  from  hard  parts, converters and coolers is next to impossible. Help ensure your reputation and extend  the  life  of  your  rebuild. Protect your warranty by installing the new Sonnax high- efficiency  internal  filter,  which offers  better  filtration  without compromising pressure. High- Efficiency Internal Filter 36423-BPF 1 High Efficiency Internal Filter * patent pending CORRECTION CAUSE COMPLAINT Excessive contamination after rebuild SECONDARY COMPLAINTS • Sticking valves   • Bushing/thrust washer wear  • In-warranty failure Features & Benefits • This 5-micron filter removes post-rebuild contamination 10 to 100 times more effectively than currently available cooler line filters. • The filter continuously and efficiently removes residual contamination from prior failures. • Fluid is pushed through the filter. • Filter is in the pan. Sonnax Part Summary The circuit design of the Sonnax filter ensures adequate oil pressure and flow to force fluid through the densely wound radial filter element. Sump filters and cooler line filters must balance flow and restriction, thus limiting their effectiveness. Sonnax has solved this prob- lem  by  feeding  the  filter  directly  from  internal  transmission  pressure  in  a  “kidney  loop bypass” configuration.  By installing the filter inside the transmission at time of rebuild, all problems associated with external filters are eliminated. No more hassles, leaks, comebacks or filters “left off” by the installing shop. 36423-BPF-TIPIN Rev:-,  36423-BPF-TIPIN   06-12-08 ©2008 800-843-2600 • F: 802-463-4059 • www.sonnax.com • info@sonnax.com Now you can clean it up. T i m e   Te s t e d   I n d u s t r y   Tr u s t e d Sonnax testing has shown the new high-efficiency filter for the E4OD, 4R100 removes post-rebuild contamination significantly more effectively than any other filter currently on the market

36423-BPF-TIPIN Rev:-,  36423-BPF-TIPIN   06-12-08 ©2008 800-843-2600 • F: 802-463-4059 • www.sonnax.com • info@sonnax.com T i m e   Te s t e d   I n d u s t r y   Tr u s t e d 1,200,000 1,000,000 800,000 600,000 400,000 200,000 Rebuilt tranny with Sonnax filter after 1500 miles Rebuilt tranny with Sonnax filter after 400 miles Average rebuilt transmission Average good used vehicles Manufacturer target maximum The secret exposed! Rebuilt transmissions are 5 to 50 times dirtier than transmissions in good used vehicles.

E4OD, 4R100 PART NUMBER  36423-BPF Frequently Asked Filter Questions 36423-BPF-TIPIN Rev:-,  36423-BPF-TIPIN   06-11-08 ©2008 800-843-2600 • F: 802-463-4059 • www.sonnax.com • info@sonnax.com T i m e   Te s t e d   I n d u s t r y   Tr u s t e d PATENT PENDING • Why is a supplemental filter needed, isn't that the job of the OEM sump filter? OEM sump filters have a tough job keeping fluid clean while flowing great volumes of oil that is very thick when cold.  These  contradictory  requirements  may  work  OK  with  new  vehicles,  but  our  tests  have  shown  that especially  after  overhaul,  alarming  amounts  of  fluid  contamination  circulate  through  the  transmission.  Sump filters just aren’t effective at cleaning the fluid as needed. • If contamination levels are greater after overhaul, how often must the filter be changed? The greatest benefit of this filter is to remove left over contaminants from prior failures that settle in impossible to clean areas in hard parts, the converter and cooler as well as to collect break-in material. If the filter becomes restricted by contaminants, it has done its primary job. Periodic replacement is not mandatory. If replacement is desired, it can be done when the sump filter is serviced. • How is this filter different than currently available cooler line filters? This filter installs inside the transmission and removes far more contaminants than common cooler line filters. This internal filter eliminates the problem of improper installation associated with external filters (or of not being installed if you ship units to other shops). The pleated type element in common cooler line filters is about .020” thick, whereas the Sonnax filter has hundreds of layers of “radially wound” media creating a .625” thick trap that is highly efficient at removing contamination from hydraulic fluid.     • Does this filter have an internal bypass? No,  the  Sonnax  High  Efficiency  Internal  filter  uses  a  “bypass/kidney  loop”  configuration  rather  than  an  internal “bypass/relief  valve”. With filters, the word “bypass” can have two different meanings. One indicates a separate system that filters a portion of oil and returns it to the sump. This is common in hydraulic systems when clean fluid is required. “Bypass” also refers to an internal by-pass or pressure relief valve that allows fluid flow if a filter becomes restricted. This method  is  needed  when  a  filter  is  in-series  with  a  functional  oil  circuit  and  in  some  variations  always  allows  some unfiltered fluid to flow straight through. Typical aftermarket, external cooler line filters are like this. • Where does the oil that feeds the filter come from? Is it taking oil away from somewhere else? The oil that feeds this filter comes from the solenoid feed circuit, a un-orificed circuit that regulates at a preset pressure. “Un-orificed” means the amount of oil volume available is not limited as with other circuits fed through an orifice. The solenoid regulator valve maintains consistent circuit pressure regardless of whether the solenoids are on or off. Ultimately the pump is the oil source feeding this filter. • How much oil flows through the filter? The filter is fed through a passage, tapped by the rebuilder, that allows only a slight amount of oil to flow through. It takes approximately 20 minutes to filter an amount equivalent to the E4OD/4R100 fluid capacity. • How is it possible to clean all the fluid through a small feed orifice? Surprisingly, particles as large as .003” (75 micron) and larger circulate freely  throughout  the  transmission  and  the  sump  filter  as  well!    Even particles of this relatively large size are small compared to the feed orifice. For example, a .003” (75 micron) particle in the feed orifice is comparable to a person next to a 5-story building. The difference with the Sonnax fil- ter is these particles flow in but NOT out. • Can I use this filter in other applications? No. This kit is specially configured and calibrated for the E4OD/4R100. We  will  be  developing  other  applications  soon.  Let  us  know  which applications you are interested in. For More Information Attend the Presentation on Filtration Thursday, October 30th at Trans Expo! Presented by Gregg Nader of Sonnax