300E (124.026) L6-2.6L (103.940) (1990)
Fluid Pump: Service and Repair
Removing and Installing Primary Pump and Front Cover
Removing and Installing Front Transmission Cover and Primary Pump
Preceding work:
Removing and installing transmission with torque converter. See: Service and Repair/Remove and Install/Remove and Installing Transmission With
Torque Converter
Remove, install Front transmission cover (10) by unscrewing, screwing in bolts (18), 13 Nm, check gasket (19).
Take off, insert, Teflon rings (9), stick in place with grease, joint of rings must stay together.
Remove and insert Snap ring (15) by tensioning spring plate (13) using assembly device.
Take off, fit on, Spring plate (13) and return springs (14).
Pull out, Piston (12), check lip seals (16, 17), replace if necessary.
Remove and install, Primary pump (1-4) by loosening bolts (8), 20 Nm. Pull out pump gears (3, 4), insert and check. chamfer of primary pump gear
(4) must be facing bearing bush in primary pump housing cover.
Check, replace, Radial seals (6) and O-ring (7) if necessary, and also check radial roller bearing in primary pump housing cover.
Special Tools
Return spring for B3 piston