Graco D200 Repair Manual page 34

Repair
Assemble Piston Rod Seal and Bearing
See F . 33 on page 33.
IG
1. For S20 3 in. Ram: Lubricate seal (802d) and
spacer (802p) and install in bearing (802j).
a. Align groove on bearing with pin (802b) and
install bearing (802j) into end cap (802a). Lubri-
cate o-ring (802c) and end cap (802a).
b. Slide spring (802m) and end cap (802a) on bot-
tom of piston rod.
2. For D200 and D60 3 in. Rams: Lubricate o-ring
(202d) and bottom bearing (202j).
a. Install o-ring (202d), bottom bearing (202j), and
retaining ring (202k) into end cap (202a).
b. Install new o-ring (202c) and pin (202b) on end
cap (202a). Lubricate o-ring (202c) and end cap
(202a).
c. Slide spring (202m) and end cap (202a) on pis-
ton rod (202n, 302n).
3. Install retaining ring (203).
4. For D200 3 in Ram: Install tie bar (204), washers
(204, 205), and nuts (205, 206).
5. For D60 3 in. Ram: Remount mounting plate (381)
and attach nuts (383) and lockwashers (382).
Torque to 40 ft-lb (54 N•m).
6. For S20 3 in. Ram: Remount mounting plate (851)
and attach nut (857) and lockwasher (858). Torque
to 40 ft-lb (54 N•m).
Disassemble Ram Piston
1. Complete steps 1-4 from Disassemble Piston Rod
Seal and Bearing to remove the end cap from the
piston rod.
NOTICE
Do not tilt the piston rod to one side when removing it
from the base or when installing it. Such movement
can damage the piston or inside surface of the base
cylinder.
34
2. Carefully lay piston (202e, 802e) and rod (202n,
302n, 802n) down so piston rod will not be bent.
Remove nut (202f, 802f), washer (202g, 802g), pis-
ton (202e, 802e), outer o-ring (202c, 802c), and
inner o-ring (202h, 802h).
3. Inspect parts for wear or damage. Replace as nec-
essary.
202c
202h
F . 34: 3 in. Ram Piston
IG
Assemble Ram Piston
1. Install new o-rings (202h, 802h, 202c, 802c) and
lubricate piston (202e, 802e) and o-rings.
2. Apply medium strength thread sealant. Install piston
(202e, 802e), washer (202g, 802g), and nut (202f,
802f) on piston rod (202n, 302n, 802n).
3. Carefully insert piston (202e, 802e) into cylinder and
push piston rod (202n, 302n, 802n) straight down
into cylinder.
4. Slide spring (202m, 802m) and end cap (202a,
802a) onto piston rod (202n, 302n, 802n).
5. For D200 3 in. Rams: Install retaining ring (203), tie
bar (204), washers (204, 205), and nuts (205, 206).
6. For D60 and S20 3 in. Rams: Install retaining ring
(203) and install mounting plate with nuts (383, 857)
and washers (382, 858) with pump package and
platen.
202n, 802n
202e, 802e
202g, 802g
202f, 802h
TI10521A
313527ZAD