Defender Jones and on-loan QPR forward Hewitt have been struck down by the norovirus in recent days and boss Kevin Blackwell may elect to leave them out of the travelling party.
Hewitt's absence would be keenly felt by the Shakers with fellow forwards Andy Bishop (foot), David Healy (thigh) and Lenell John-Lewis (hamstring) all sidelined.
Defender Ethan Ebanks-Landell, midfielder Zac Thompson, winger Gregg Wilde and forward Tom Hopper are all in contention to play after extending their loan spells at Gigg Lane.
Defensive duo Phil Picken (knee) and Adam Lockwood (groin) remain long-term absentees.
Bury are without a win in seven npower League One matches.