Carlisle BINKS 31-425 Manuel De Service page 6

EN
SPEED
The speed of the air motor is regulated by the 73-159 air adjusting valve.
The speed of the propeller shaft will be determined by the fluid, but it
should never be run faster than 3,000 RPM.
AIR SUPPLY
The air supply leading to the motor should have a minimum of 60 and a
maximum of 100 PSI gauge pressure for best results. Use air filter and
moisture trap.
Avoid any end or side thrust on the shaft when coupling the motor to a driven
member. Especially, do not hammer on shaft itself or on the coupling. This can
cause internal damage to vanes, bearings and housing surfaces.
37-478 AIR MOTOR REPLACEMENT OF PARTS (SEE FIG 3)
1. Remove the end cap (14).
2. Remove dead end plate bolts (28).
3. Remove dead end plate (17). Use a puller, do not use screwdriver to
remove the end plate.)
4. Remove the dowel pins (21) from the body and push back into end
plate (17) until flush or just below the machined surface of the dead
end plate. Remove rotor (20) using an arbor press.
5. Remove vanes (19).
6. Remove shaft seal (27) and drive end plate bearing (26) from drive
end plate (24) and bearing (16) from dead end plate (17). Do Not
remove drive end plate bolts or drive end plate.
7. Clean parts. Check for scoring on the end plates and rotor assembly.
If scoring exists, replace the end plates.
8. Check the bearings for signs of wear. Replace the bearings at least
every 2 years.
9. Place the drive shaft of the rotor assembly (20) through the body
into the drive end plate (24). Press the drive end bearing (26) onto
the drive shaft using a bearing pusher.
10. Using a suitable tool, lightly tap on inner race of the drive end
bearing (26) to snug up rotor (20) to drive end plate (24).
11. Check the vanes (19) for wear. If the height of the vanes are less
than 6.8mm (0.270") then re-new the vanes. Install new vanes
(19), the angle cuts on the vane face to the center of the rotor.
FIG 3
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BINKS MODEL 37-478 VERTICAL AIR MOTOR
CAUTION
!
PREVENTIVE MAINTENANCE AIR MOTOR LUBRICATION
Lubricate air motor daily by adding 4 or 5 drops of SAE 10 weight oil into
air inlet fitting. For convenience, an automatic oiler may be connected
to the air inlet.
!
Failure to properly lubricate the air motor will result in
premature motor failure and will void warranty.
12. Place the dead end plate gasket (18) on the body (22). If the
original is damaged, replace with a new one supplied in the service
kit.
13. Place the dead end plate (17) on the body.
14. Install the dead end bearing (16) and press into place with bearing
pusher tool.
15. Install the dowel pins (21).
16. Fully tighten the bolts (28).
17. Set end clearance to the values at the end of this section. Lightly
tap on the inner race of the dead end bearing to free up and center
the rotor in the body.
18. Apply a small amount of grease to bearing seal (27) and install the
drive end bearing seal by pressing flush with bearing pushing tool.
19. Reattach end cap (14) with new gasket (15).
20. Apply a few drops of 10w oil lubricant into ports and rotate shaft
by hand for a few rotations.
21. Re-assemble in reverse order.
END CLEARANCES
Total clearance .051mm (0.002")
Top end clearance .038mm (0.0015")
6 / 8
CAUTION
Ref.
Description
No.
14 End Cap
15* Gasket
16* Bearing Dead End Plate
17 Dead End Plate
18* Gasket Dead End Plate
19* Vane
20 Rotor
21 Dowel Pin
22 Body
23 Gasket Drive End Plate
24 Drive End Plate
26 Bearing Drive End Plate
27* Seal
28 Screw
* 6-196 Motor repair kit
77-1474-R21 (2/2022)
Ind.
Parts
Req.
1
1
1
1
1
4
1
2
1
1
1
1
1
10