26–04 Eaton Fuller
Transmission Air Filter/
Regulator Element
Cleaning
NOTE: Meritor transmissions do not have an air
filter/regulator element that needs servicing.
1. Exhaust the air from the air reservoirs.
WARNING
Exhaust the air supply before servicing the air
filter/regulator; otherwise, serious personal injury
and component damage could result.
2. Clean the outside of the air filter/regulator with
cleaning solvent, then let it air dry. See Fig. 3.
3. Remove the end cap, large O-ring, and filter ele-
ment from the filter housing. See Fig. 4. Remove
the small O-ring from the end cap.
NOTE: Do not remove, disassemble, or adjust
the air regulator. If the air regulator is not keep-
ing the air pressure between 57 to 62 psi (396
to 431 kPa), replace the air filter/regulator. It
cannot be repaired.
4. Clean the filter element.
4.1 Dip the filter element in alcohol or other
cleaning solvent. Blow compressed air
through the filter element (inside to out-
side) to loosen surface dirt and to dry the
element. The sintered metallic filter ele-
ment will last the life of the vehicle, pro-
vided it is not damaged.
4.2 Wipe out the filter housing with a clean,
dry, lint-free rag.
5. Clean and inspect the O-rings and the end cap.
Replace any parts that are damaged.
6. Install the large O-ring, then the filter element
(small end first) into the filter housing.
7. Install the small O-ring into the end cap, then
install the end cap on the filter housing. Tighten
the end cap until firm.
8. Start the engine, and build up pressure in the air
system. Check for air leaks at the filter housing
and air line connections, and repair any leaks.
f260037a
05/27/93
Fig. 3, Eaton Fuller Transmission Air Filter/ Regulator
Location
1
2
3
4
5
6
7
f260052a
10/17/2001
1. Air Regulator
2. Housing
3. Large O-Ring
4. Filter Element
5. Small O-Ring
6. End Cap
7. Plug
Fig. 4, Eaton Fuller Transmission Air Filter/ Regulator
Components
Transmission 26
Business Class Trucks Maintenance Manual, February 2003 26/5
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