26
MARA PIGGYBACK SERVICE MANUAL
1
Remove the negative chamber
MCU and spacer(s). Carefully
remove the dust wiper using
an O-ring pick. Remove the
quad-ring and piston ring.
Clean and inspect air can for
damage.
Remove the King Can outer
sleeve. Remove the O-rings,
remove white back-up ring
from the middle groove (Mid-
King Can volume setting), and
volume spacer rings if used.
Thoroughly clean the entire air
can with Isopropyl alchohol
2
Air can service
3
Optional use Air Can Negative
Seal Service Tool (172-
32193-K001) to ease seal
installation. If not available
refer to “50 hour Air Can and
Piston Service Guide.” The
flat surface of the tool will
help direct the seals into the
internal seal glands. Install
the quad-ring first.