JLG T500J Service And Maintenance Manual page 91

19. If shuttle valve components items #21, were removed
from the end cover (2) turn a plug (21), loosely into one
end of the valve cavity in the end cover. A 3/16 inch
Allen wrench is required.
20. Assemble a new seal ring (4) into end cover (2) and
assemble end cover over the alignment studs and onto
the commutator set. If the end cover has only 5 bolt
holes be sure the cover holes are aligned with the 5
threaded holes in housing (18).The correct 5 bolt end
cover bolt hole relationship to housing port bosses.
3121200
SECTION 3 - CHASSIS & TURNTABLE
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NOTE: If the end cover has a valve (24) or has five bolt holes, use
the line you previously scribed on the cover to radially align
the end cover into its original position.
21. Assemble the 5 or 7 special bolts (1) and screw in finger
tight. Remove and replace the two alignment studs with
bolts after the other bolts are in place. Alternately and
progressively tighten the bolts to pull the end cover and
other components into place with a final torque of 
45-55 ft. lbs. (61-75 N m) for the seven 3/8-24 threaded
bolts.
3-55