FF-MM-369-REV - 02
Page 8
Operation and Maintenance Guide 4 VM Air Motor Series
Dis assembly and Re-assembly
Disconnect air supply and vent all air lines.
Air stream from product may contain solid or
liquid material that can result in eye or skin
damage.
Flush this product in a well ventilated area.
Do Not use kerosene or other combustiblesol-
vents to flush this product.
Failure to follow these instructions can result
in eye injury or other serious injury.
Always open from the back side first.
Use proper tools to open the fasteners.
a. Unscrew Allen Bolts (12) with Spring
Washer (11) from Bearing Cap (5) from
Rear Flange (3). Remove O-ring (8) on
Bearing Cap (5) and replace with new one
(if found damaged).
b. Unscrew Allen Bolts (15) with Spring
Washer (19) from Rear Flange (3) from
Housing (1) & replace Shim (10) with new
one (if found damaged).
c. Now remove Ball bearing (6) from Rear
Flange (3) using mallet and replace it with
new one (if worn-out).
d. Now remove the Rotor Shaft (4) with Rotor
Blades (16) from the Housing (1), Now
remove the Rotor Blades (16), Spring Cap
(18) & Compression Spring (17) from
Rotor Shaft (4) and replace them with new
ones. (if found damaged)
e. From front side of motor remove Internal
Circlip (20) using circlip plier from Front
flange (2) then remove Oil Seal (9), Now
remove Ball bearing (6/7) by using puller
and replace it with new ones (bearing & oil
seal).
f. After installation bearing seals then install
the Internal Circlip (20) using circlip plier
in the internal groove of Front Flange (2).
g. Now assemble Compression Springs (17)
with Spring Caps (18) on both end of
springs. After that, insert the same into the
Rotor Shaft’s (4) through holes (use small
amount of grease to prevent Spring caps to
fall during assembly). Now place the 4
nos. Rotor Blades (16) into the rotor shaft
grooves.
h. Now install the above Rotor Shaft assem-
bly into the Housing (1) and Front Flange
bearing using press/mallet precisely and
ensure that rotor face is not above the
housing face.
i. Now follow the above steps ‘c’ & ‘b’ in
reverse manner to assemble the motor.
j. Now after assembly, ensure that Rotor
Shaft (4) is rotating smoothly inside, else
tap lightly on the rotor shaft front end or
rear end until you obtain smooth rotation
of Rotor Shaft (4).
k. Once smooth rotation is achieved follow
the step ‘a’ in reverse manner and com-
plete the assembly.
