AIRLESSCO GS800 - Manual (Page 13)

Maintenance
3A1186F 13
Packing Replacement Procedures
Disassembly of the Fluid Pump
1. Disconnect the Fluid Pump, page 10.
2. Unscrew and remove the packing nut.
3. Push the piston rod down through the packings and
out of the pump.
4. Now push the packing removal tool up through the
pump and remove from the top bringing the pack-
ings, spacer and springs along with it, leaving fluid
body empty.
NOTE: Make sure all old packings and glands have
been removed from fluid pump.
5. Clean inside of fluid body.
6. Disassemble all parts and clean for reassembly.
Discard any old packings.
7. Lubricate leather packing in lightweight oil for 10
minutes prior to reassembly.
Reassembly of the Fluid Pump
1. Place lower male gland (1) down on the flat side.
2. Take three of the lower polyethylene packings (2)
and two of the leather packings (23) and place onto
the male gland (1), with the inverted side down, in
the following order:
•
Polyethylene (2)
• Leather (23)
• Polyethylene (2)
• Leather (23)
• Polyethylene (2)
3. Take the female adaptor (3), which is inverted on
both sides, and place it on top of your assembled
lower packings.
4. Follow step 2 with your packings inverted side up.
5. Take the second lower male gland (1) and place it
on top of your assembled packings with rounded
side down.
6. Take assembled glands and packings (13 pieces)
and slide onto the lower half of the piston (14).
7. Take the spacer (15) and slide over the top of the
piston (14) (it doesn’t matter which direction it sits),
falling onto the lower packings.
8. Take three Belleville Springs (16) and slide over the
top of the piston (14) in the following order:
•
First spring - curve facing down
• Second spring - curve facing down
• Third spring - curve facing down
9. Take the upper male gland (17) and place it
rounded side up.
10. Take three upper polyethylene packings (18) and
two leather packings (22) and assemble with
inverted side down, on to the male gland (17) in the
following order:
•
Polyethylene (18)
• Leather (22)
• Polyethylene (18)
• Leather (22)
• Polyethylene (18)
11. Take upper female gland (19) and place on top of
assembled upper packings with the inverted side
down.
12. Take assembled upper glands and packings (7
pieces) and slide on over the top of the piston (14),
making sure inverted sides are down.
13. Take the packing holder (20) and replace the white
O-ring (24) and the black O-ring (25) with new ones
from the packing kit.
14. Slide the packing holder(20) over the top of the
upper packings so they fit inside.
15. Lubricate inside of the fluid pump body (4) and the
outside of the packings with a light weight oil.
16. Slide assembly into fluid pump body (4).
NOTE: To keep packings secured in correct position,
hold the pump body upside down and push the com-
pleted assembly upwards into the pump body. Once
placed inside, tilt pump body back up to keep all pieces
in.
17. Tighten the packing nut (21) into the top of the fluid
pump body (4) and tighten until you feel slight resis-
tance against the Belleville Springs (16). Using the