Gardner Denver HELIFLOW 8 Series, Owner'S Manual

Page: 36 / 64

HF-7-604 Page 35
2. Piston Ring Installation
6. Lubricate o-ring (17) with o-ring grease (51) (Parker
Super Lube Hi-Temp 884-2 or similar) and insert
into the groove on the inner diameter of the ring
carrier (7).
7. Install four piston rings (8) into the piston ring
carrier (7). O ff set the gaps in the rings 180°.
8. Repeat steps 6 and 7 for the remaining three ring
carriers.
3. Bearing Housing Assembly - Drive End
Bearing housing must be oriented so that dowel holes in bearing housing lines up with dowels in air
cylinder.
9. Attach mounting bracket to the inlet port of the air
cylinder (1) and mount cylinder (1) to trunnion. Refer
to the arrows cast into the air cylinder by discharge
port to determine the air
fl ow direction. The discharge
port has two feedback slots adjacent to the triangular
opening. Position cylinder vertically with the drive
end on the top. The feedback slots should be up.
10. Apply Loctite Gasket Eliminator 515 (50) to the sealing
surface of the cylinder and install two dowel pins (27)
into the cylinder. Install the bearing housing (3) onto
the cylinder using two sock- et head bolts (31), four
hex head bolts (38) and four lock washers (32).
11. Tighten bolts (31) to 110-lbs. and (38) bolts to
75-lbs.
12. Reposition the air cylinder vertically with the drive
end on the bottom for the next step.