Repair
24 3A1570A
Remove Air Motor1. Press in tube fitting ferrules and pull out tubing (65)
to disconnect air line.
2. Disconnect DataTrak communication cable, if
installed.
3. Place wrench on adapter (315) and a another
wrench on lock nut (313). Remove lock nut (313).
4. Remove four nuts (310) from tie rods (309).
5. Loosen two screws (314) behind air motor bracket.
Carefully lift air motor and tie rods away from the
proportioner frame and plate (301).
6. Lay air motor on a clean flat work space. Place a
wrench on the tie rod flats (309) and hold one of
other tie rods with your hand to keep the air motor
(308) in place. Remove the tie rods from the air
motor.
7. Use a wrench to hold the piston rod in place and
remove the adapter (315) with another wrench. See
FIG. 1.
8. See air motor manual for repair instructions.
Install Air Motor1. Apply medium blue thread lock on adapter (315).
Use a wrench to hold the piston rod in place and
install the adapter (315) with another wrench.
Torque to 32-38 ft-lbs (43-51 N•m). See FIG. 1.
2. Install tie rods (309) in the bottom of the air motor
(308). See FIG. 3.
3. Install tie rods through plate (301). Ensure screws
(314) fit in the bracket slots (311). Install screws
(314). See FIG. 2.
4. Tighten nut (313) to 32-38 ft-lbs (43-51 N•m).
5. Evenly torque four tie rod nuts (310) in small incre-
ments to 27-32 ft-lbs (37-43N•m). See FIG. 2.
FIG. 1
FIG. 2
313
315
ti17992a
310
309
301
314
ti17993a
FIG. 3
309
308
ti17994a