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Apply one drop of adhesive, supplied, on the
4.
threads of the piston valve. Place the small ball (3)
on the piston valve (D). Hand tighten the valve
into the rod (E) just until the nut contacts the rod.
Place the flats of the rod in a vise .
5.
Tighten the piston nut (B) onto the piston rod (E)
to 19 ft–lb (25 N.m). Use two wrenches to main-
tain the alignment as mentioned in Step 3, page
1.
6.
Stack the male gland (11), packings (18) and fe-
male gland (12), one at a time into the top of the
cylinder (H). Install the packing nut (G) and plug
(L). Leave the packing nut loose for now.
7.
Insert the piston rod (23) through the bottom of the
oiled pump cylinder.
8.
Assemble the intake valve (J) with a new gasket
(6), the large ball (4), ball guide (K), and pin (7).
Screw the assembly into the pump cylinder. Tight-
en to 80 ft-lb (109 N.m)
9.
Install the jam nut (F) on the cylinder, if it was re-
moved. Connect the pump to the sprayer as de-
scribed in your separate pump instruction
manual.
10. Tighten the packing nut (G) just enough to stop
leakage, but no tighter. Fill the wet–cup/packing
nut 1/3 full with Graco TSL.
PARTS LIST
Repair Kit 222–687
REF NO. PART NO. DESCRIPTION
3
105–444
BALL,
4
105–445
BALL,
5
108–995
SEAL,
6
176–761
GASKET,
ball stop
7
176–759
PIN,
11
183–556
GLAND,
12
183–237
GLAND,
13
183–236
GLAND,
17
176–882
V–PACKING,
18
176–997
V–PACKING,
19
183–557
WASHER,
20
183–558
GLAND,
25
ADHESIVE
Subsidiary and Affiliate Companies: Canada; England; Switzerland; France; Germany; Hong Kong; Japan
QTY
sst; 0.3125"
1
sst; 0.50"
1
u–cup
1
copper
1
1
male,
1
female, brass
1
male, brass
1
polyethylene
5
polyethylene
5
backup
1
packing, female
1
1
Fig 2
Factory Branches: Atlanta, Dallas, Detroit, Los Angeles, West Caldwell (N.J.)
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1444
PRINTED IN U.S.A. 307–961
DETAIL OF
THROAT PACKINGS
LIPS OF
V–PACKING IN
THROAT MUST
FACE DOWN
F
JAM NUT
12
FEMALE
GLAND
11
MALE
GLAND
DETAIL OF
PISTON PACKINGS
LIPS OF
V–PACKING IN
PISTON MUST
FACE UP
B
PISTON NUT
13
MALE GLAND
20
FEMALE
GLAND
D
PISTON
VALVE
7
PIN
4
LARGE BALL
J
INTAKE VALVE
2–89
E
ROD
L
PLUG
G
PACKING
NUT
18
POLY
LIPS OF
V–PACKING IN
THROAT MUST
FACE DOWN
3
SMALL BALL
H
CYLINDER
17
POLY
LIPS OF
V–PACKING IN
PISTON MUST
FACE UP
5
U-CUP SEAL
LIPS FACE DOWN
19
BACKUP WASHER
6
GASKET
K
BALL GUIDE
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