13306982
Service
Throat Packing Service for In-Line Pump Model 206078
The piston in the air motor, located behind the air
motor plates, moves when air is supplied to the
motor. Moving parts can pinch or amputate your
fingers or other body parts. Therefore, never
operate the pump with the air motor plates
removed.
WARNING
See Fig. 4 on page 12 and the Parts Drawing on
page 16.
1. Clamp the pump in a vise and unscrew the
displacement cylinder (CC) from the air motor
base (J). Pull the displacement cylinder away from
the air motor until the cotter pin (DD) which
secures the displacement pump connecting rod to
the air motor piston rod (FF) is visible. See Fig. 4.
2. Remove the cotter pin (DD) and unscrew the pump
connecting rod (EE) from the air motor piston rod
(FF). See Fig. 4. Remove the cylinder (G) from the
air motor base (J) as described under
Disassembly on page 8.
3. Remove one louvered air exhaust plate (BB) and
unscrew the throat packing nut (HH), using a
spanner wrench or a 0.22 in. (5.6 mm) diameter
rod. See Fig. 4.
4. Remove the packing nut (45{), male and female
glands (47{, 48{), v-packings (49{), washer
(44{), bearing (46{), retainer (24{), wiper (22{),
o-ring (23{), u-cup (25{), and washer (26{) from
the base.
5. Clean the throat packing area in the base and the
packing nut. Clean and inspect all parts, and
replace as necessary.
6. Lubricate the packings, piston rod and piston
flange with a light waterproof grease.
7. Install the washer (26{) into the base. Assemble
the packing (25{) and the wiper (22{) into the
retainer (24{). Install the o-ring (23{) onto the
retainer, and insert the retainer assembly into the
base.
NOTE: Make sure the packing (25{) lips face
down, and make sure the wiper (22{) lips face up.
8. Insert the bearing (46{) and the washer (44{) into
the base. Assemble the female gland (48{),
v-packings (49{), and the male gland (47{) into
the packing nut (45{).
9. Reinstall the spacer and packing in the base and
packing nut (45{). Screw the packing nut into the
base, and tighten it securely. Carefully slide the
piston rod (FF) down through the throat packing,
and lower the piston into the base. Reinstall the
plate (BB) and cylinder (G). Reassemble the air
motor to the displacement pump.
10. Torque the outlet adapter (42) to 45 to 55 ft-lb (61
to 75 N-m).
CAUTION
When reinstalling cotter pin (DD), always spread and
flatten the pin (both the head and prongs) around the
rod to within a 1 in. (25 mm) total diameter. See
Detail A of Fig. 4.
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