11306982
Service
Throat Packing Service for In-Line Pump Model 205647
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
NOTE: See Fig. 4 on page 12 and the Parts Drawing
on page 14.
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. Remove the spacer and packing
from the base and packing nut. Clean the throat
packing area in the base and the packing nut.
Clean and inspect all parts and replace as
necessary.
4. Lubricate the packings, piston rod and piston
flange with a light waterproof grease. Reinstall the
spacer and packing in the base and packing nut.
Be sure the lips of the v-packings face down. See
Detail B. Screw the packing nut loosely into the
base. Carefully slide the piston rod down through
the throat packing and lower the piston into the
base. Tighten the packing nut securely. Reinstall
the plate (BB) and cylinder (G). Reassemble the
air motor to the displacement pump.
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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