Graco 24H853, Repair Instructions

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Instructions
8 3A1494D
15).
12. Perform any air valve repairs / maintenance
needed. Instructions for these procedures are
included in the separate repair manual included with
the Air Valve repair kit.
13. Be sure seals (25) are lightly greased and installed
on air valve (38). Install air valve on air cylinder (27)
(Fig. 17).
NOTE: The air valve (38) can be installed in any
configuration. There is not just one correct way to
install these parts.
14. Install screws (43). Torque to 60-70 in. lbs (6.8 - 7.9
N.m).
15. Torque bolts (4) installed in Step 10 to 60-70 in. lbs
(6.8 - 7.9 N.m).
Muffler (21) Installation (Fig. 17)
Depending on your installation, the air valve (38) can be
mounted with the muffler (21) on either side of the air
valve (38).
To change the installation location:
a. Remove the 4 screws (43).
b. Remove the air valve (38) from its current
mounted position on the air cylinder (27) and
rotate the air valve 180 degrees, which will
reposition the muffler to face the other side of
the pump.
16. Install new o-rings around pump piston (33) (Fig.
16) fluid cylinder (32) and intake valve housing (28)
(Fig. 18) as described in the O-Ring Replacement
Kit 24H855 or 24K293, page 11. Be sure to apply a
thin coat of water-resistant grease to all o-rings and
seals.
17. Install the fluid cylinder (32) over the displacement
rod (3), threaded end first. Hand tighten and then
torque to 20-25 ft. lbs (27-34 N.m) (Fig. 18).
NOTE: It is not necessary to torque the fluid cylinder
in this step. Everything will be torqued simultane-
ously in Step 16 with the intake housing (28).
18. Install the intake valve (28) housing on the end of
the fluid cylinder (32). Hand tighten and then torque
to 20-25 ft. lbs (27-34 N.m) (Fig. 18).
Fig. 16
Fig. 17
4
33
43
38
27
25
21
4
Fig. 18
32
28