ARO 8521-A Operator's Manual - Page 10

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MOTOR SECTION

DISASSEMBLY

a. Remove motor from housing. Grasp cylinder in one hand and

tap splined end of rotor with a soft face hammer; motor will

assemble over rotor, aligning air inlet holes of cylinder with air

come apart.

inlet slots of end plate.

d. Coat blades (31363) with ARO 29665 spindle oil and as-

ASSEMBLY

semble to rotor slots - straight side out.

e. Assemble bearing (Y65-15) to end plate (31602) pressing on

a. Pack bearings with ARO 33153 grease and assemble bearing

(Y65-7) into end plate (31601), pressing on outer race of

outer race of bearing.

Assemble end plate (31602) to cylinder, aligning roll pin in cyl-

bearing.

inder with hole in end plate.

b. Assemble end plate (31601) to rotor, pressing on inner race of

g. Be sure rotordoes not bind (if rotor binds, tap splined end light-

bearing.

ly with a soft face hammer to loosen) and assemble motor to

c. Coat i.d. of cylinder (37684) with ARO 29665 spindle oil and

housing with locating pin (32814) and porting block (45471).

Assemble spacers (32310 and 32305) and gearing to tool.

* 32614 LOCATING PIN

31662 END PLATE

Y65-15 BEARING

Y178-24 ROLL PIN

Y65-7 BEARING

31661 END PLATE

31633 ROTOR

32310 SPACER *

2366 SPACER *

* NOT INCLUDED IN MOTOR ASSEMBLY

t INCLUDED WlTH 37664 CYLINDER

37664 CYLINDER

33811 MOTOR ASSEMBLY

31662 END PLATE

Y65-15 BEARING

Y176-26 ROLL PIN t

Y65-7 BEARING

31601 END PLATE

32310 SPACER $

37664 CYLINDER

32365 SPACER

0 31363 BLADE (5)

33816 MOTOR ASSEMBLY

PARTS MARKED THUS 0 ARE INCLUDED IN SERVICE KIT NO. 42114 AND/OR 42341, SEE PAGE 12.