Turbo Action 17999 Torqueflite 727, 904, 998 & 999 Tranz Brake (PRN123) - Manual (Page 9)

Part #17999 3/31/04 Page #9
Fig. #6 - Accumulator
Center of Transmission
Part #17131A
Piston Blocker
3/16” Hole
Outside of Transmission
Large Diameter
of Accumulator
Small Diameter
of Accumulator
Accumulator
CAUTION:
Transmissions manufactured in 1971 and later may
have a hole drilled in the bottom of the accumulator
bore. This hole must be blocked. Please note that
some units have an elongated hole on the side of the
bore which is fine to be left as is. 1971 or newer
transmissions have a Part #PK35XXXXX or higher on
the pan rail drivers side.
1970 or Older Transmissions Part #PK34XXXXX or
lower will have a hole in the bottom of the bore, but
does not require being blocked.