SHAFT END COVER SUBASSEMBLY
Screw the two check valve assemblies into their
respective holes, approximately two threads below
1. Install back-up rings (17) and shaft "O" ring (18) in
face of shaft end cover (9). Single rotation units do
gear side of shaft end cover (9).
not require check assemblies. Instead, a plug is
installed on the high-pressure side
Installing back-up ring
Peening over check valve seat
2. Install two new roller bearings (19, 33) in the bores
of the cover-IF-the used ones were removed.
of pump with the low-pressure side left open. Peen
over the check valve seat and ball retainer to
prevent the valves from backing out.
4. Remove shaft end cover (9) from vise, turn over,
place in arbor press and press in oil seal (8) with the
open side down facing toward the bearing bore.
Pressing in oil seal FIGURE 6-7
3. Place the shaft end cover (9) gear side up in a vise
having soft jaws and reassemble the two check
valves for double rotation by inserting the ball (35)
into the check valve seat (36) and screwing the
check ball retainer (34) flush into the check valve
seat being sure the check ball is free to move.