4
EATON Char-Lynn
VIS 45 Series Bearingless Motors Parts and Repair Manual C-MOLO-TM006-E March 2008
VIS Bearingless
Motors -
45 Series
Disassembly
Screw, 12pt
End Cap
Seal, Square Cut
O-ring
Valve Plate
Seal, Square Cut
Geroler
Check Balls
Drive
Seal, Square Cut
Balance Plate
Outer
Balance Plate
Inner
Seal, Square Cut
Spring, Belleville
Disc
Backup ring
O-ring
Flange
Face Seal
O-ring
Disassembly
1.
Cleanliness is extremely important when repairing
hydraulic motors. Work in a clean area. Before disconnect-
ing the hydraulic motor thoroughly clean the exterior.
Remove motor from application and drain the oil from
the motor before disassembly.
2.
Remove the 9 cap screws and disassemble the motor
in the vertical position as shown in Figure 1.
Note placement of small ball checks in Geroler.
3.
Remove shuttle valve (and relief valve if applicable)
from end cap.
4.
Remove two plugs from end cap (end ported motors only).
5.
Check all mating surfaces. To reduce the chance of leak-
age, replace any parts that have scratches or burrs. Wash
all metal parts in clean solvent. Blow them dry with
pressurized air. Do not wipe parts dry with paper towels
or cloth as lint in a hydraulic system will cause damage.
Tools Required
– 1/4 inch Hex Key
– 3/16 inch Hex Key
– 5/8 inch Hex Key (End Ported Motor Only)
– Torque wrench - 200 Nm [150 lb-ft] capacity
Figure 1
