Graco D200 Repair Manual page 32

Repair
Disassemble Ram Piston
1. Relieve pressure.
2. Remove nuts (1a) and lockwashers (1b) holding the
tie bar (1c) to the piston rods (1d). See page 39.
3. Remove nuts (103, 105) and washers (102, 104).
See parts illustration on page 43.
4. Lift tie bar (1c) off rods.
5. Remove retaining ring (1h) by gripping the ring tab
with a pair of pliers and rotating the ring out of its
groove.l
6. Remove guide sleeve (1g) and slide it off piston rod
(1d).
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.
7. Carefully lay piston (1r) and rod (1d) down so rod
will not be bent. Remove bottom retaining ring (1n)
and o-ring (1p). Remove piston guide band (1q).
Slide piston (1r) off piston rod (1d).
1p
1j
1r
1q
F . 32: 6.5 in. Ram Piston
IG
32
Assemble Ram Piston
1. Install new o-rings (1p, 1j) on piston rod (1d) and
2. Carefully insert piston (1r) into cylinder and push rod
3. Slide guide sleeve (1g) onto piston rod (1d).
4. Install retaining ring (1e) and tie bar (1c) as
1d
1n
TI10785A
piston (1r). Lubricate the piston (1r) and o-rings (1p,
1j). Reinstall piston (1r) and lower retaining ring (1n)
onto piston rod (1d). Install piston guide band (1q)
onto piston (1r).
(1d) straight down into cylinder. Add three ounces of
lubricant to each cylinder after inserting the piston
(1r).
explained in Disassemble Ram Piston.
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