Graco 306287, Instructions-Parts List Manual

Page: 7 / 16

306287 7
Service
Lubrication
Every two to six weeks, take the cap (20) off the riser
tube (14 or 28) and put a few drops of light, high grade
motor oil on the inside surface of the tube to lubricate
the leather packing (10). See Fig. 6. When replacing
the cap, torque to 20–40 ft-lb (37–54 N
S
m).
CAUTION
Be careful not to dent or damage the riser tube (14
or 28). Dents may cause the elevator to bind, making
operation impossible.
Fig. 6
20
19
25
17 or 22
21
5
4
8
10
9 or 18
12 or 24
13 or 29
14 or 28
1
3
4
2
1
Torque to 20–40 ft–lb (27–54 N S m)
2
Torque to 90–130 ft–lb (122–175 N S m)
3
Torque to 15–20 ft–lb (20–27 N S m)
4
Torque to 30–60 ft–lb (40–80 N S m)
5
5
Apply lubricant to inside surface
6
6
Apply tape
7
7
Apply Loctite
R
56765 Sealant to threads
7
Seals and Gaskets
To replace the leather cup packings (10), screw the
bearing housing (25) out of the riser tube (14 or 28)
and slide the tube up off the piston (11). See Fig. 6.
Screw the piston retainer capscrew (21) out of the
piston body and remove the parts. Inspect parts for
wear and damage and replace as necessary.
NOTE: When replacing packings, install a new
spreader (5). This will increase the life of the packings.
Soak new leather packing (10) in light oil, and put
lithium grease on the inside surface of the tube. Re-
assemble in the reverse order. Apply Loctite
R
56765
thread sealant to the internal threads of the piston
body (11) and the threads of the capscrew (21). Torque
the capscrew to 15–20 ft-lb (20–27 N
S
m).
To replace the guide tube gasket (19), screw the guide
tube (13 or 29) out of the elevator base (17 or 22).
Take the gasket out. See Fig. 6. Be careful not to
damage the outside bearing surface of the guide tube.
Put a new gasket into the base. Put
R
tape on
the threads of the guide tube and screw it into the
base. Torque to 90–130 ft-lb (122–175 N
S m).
Push-Pull Valve
Remove the valve guide (71), washer (64), o-ring (66*)
and seal (67*). Pull the assembled valve parts out of
the valve body (70). See the Parts Drawing on
page 8. Disassemble parts, clean and inspect. Re-
assemble the valve, using new parts as necessary.
PTFE