Graco A Series Instructions-Parts List Manual page 16

Repair - Model 24J090
Lower Reassembly
1. Lubricate the new piston seal (25*) and install it on
the piston.
2. Install the piston plate (24) with the beveled edge
facing away from the piston seal. See F
20
21
3
4
*22
1
1
Apply lubricant.
3
Torque to 200-210 ft-lb (270-285 N•m).
4
Apply lubricant to face of piston nut.
8
Apply high strength (red) Loctite
length of threads. Sealant must be allowed to cure for a
minimum of 12 hours before use.
F . 14. Piston Assembly
IG
Tighten the tool on the
widest part of the shaft
(19). Grip the tool with
a wrench and unscrew
the shaft.
F . 15. Tool Kit 220385
IG
16
. 14.
IG
19
8
23*
24
25*
1
26
TI0219
®
263 or 2760 to entire
19
01413
3. Install o-ring retainer (20). Lubricate o-ring (22*) and
slide it on over the threads of piston rod (19). Apply
high strength (red) Loctite
length of the piston rod (19) threads. Sealant must
be allowed to cure for a minimum of 12 hours before
use.
4. Screw the piston nut (21) snugly against the o-ring
retainer (20). Apply lubricant to the bottom face of
the piston nut (21). Assemble o-ring (23*) and install
in the groove on the piston nut. Screw rod (19) into
piston (26) until snug. Tighten piston nut (21) to
270-285 N•m. (200-210 ft-lb).
5. Remove the piston assembly from the vise, but do
not lay it down on its side; doing so may dam-
age the seal.
6. Carefully and evenly guide the seal and the piston
into the cylinder. The piston seal and piston may
need to be tipped at an angle and the exposed,
leading lip of the seal tapped into the cylinder with a
plastic mallet. After the seal lip has entered the cyl-
inder use an arbor press or tap the bottom of the
piston assembly lightly with a plastic mallet to slide
the piston assembly into the cylinder. Before press-
ing, ensure the piston seal lips are started into the
cylinder. See F . 16.
IG
®
263 or 2760 to entire
3A2023C