504 serial prefix ?

PUTTER · Apr 4, 2013

There's a 504 on my local craigslist with the letters following the serial # SY-FF, just wondering what options were.

Weldon K · Apr 7, 2013

S= Torque Amplifier with provisions for PTO
Y= Hydraulic Power Supply ( 12 gpm pump )
FF= Hydraulic Power Supply ( 4.5 gpm pump)
The Two pumps are piggy-backed together. Large pump supplies 3 gpm to priority valve for power steering with the balance utilized for the auxiliary hydraulic system. The small pump supplies draft and position control system of the 2 or 3 pt hitch.
Additionally if letter Z= 17gpm and GG= 7gpm

PUTTER · Apr 7, 2013

Thank you Sir

504 serial prefix ?

PUTTER

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Weldon K

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PUTTER

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