(12) Install new O-ring (11) on back plate (12).
(13) Align matchmarks and slide back plate (12) over gear shafts until dowel pins are engaged.
(14) Install eight bolts (13). Tighten bolts evenly to 35-40 lb-ft (47-54 N.m).
(15) Rotate shaft (9) by hand or with pliers. Shaft will have small amount of drag but should turn freely after short
period of use.
(16) Install drive key in pump shaft.