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#1
10-26-2008, 08:31 AM
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Transmission pump .
My secondary pump piston was damaged in my 420sel tranny when a spring from the secondary valve body found its way between the gears .Is the secondary pump only used for tow starting or has it anouther function ?Does anyone have a spare secondary pump or piston for a 722 series tranny HELP!
My box is a 722.355 from a 1991 420sel its almost back together with new seals friction plates and rear bearing . Steve. 
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#2
10-27-2008, 07:59 AM
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You can simply leave the gears out as you suggested that pump is only for tow starts
__________________
MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator
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