ARO PG087A-A5 Operator's Manual - Page 10

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MAINTENANCE SECTION

END PLATE

SPACER SPANNER

CLOCKWISE

TO LOOSEN

(Dwg. TPD1269)

Reposition the Motor Housing in the vise jaws so that

the vise jaws grip the end of the rotor shaft and the

handle grip of the Housing is downward. Tap the edges

of the Housing surrounding the motor bore with a

plastic hammer to separate the Housing from the

motor. Refer to Dwg. TPD1270.

(Dwg. TPD1270)

Remove the motor from the vise jaws and remove the

Front End Plate (27), Front End Plate Bearing (29),

Cylinder Assembly (25) and Vanes (26) from the

Rotor.

Remove the two Rear Motor Seals (17) from the Motor

Housing.

On the table of an arbor press, support the Rear End

Plate (21) with blocks as close to the Rotor as possible

and press the Rotor out of the Rear End Plate and Rear

Rotor Bearing (22).

In the following step, do not enlarge or damage the

shaft hole in the End Plate when removing the

Bearing.

To remove the Rear Rotor Bearing from the Rear End

Plate, use a small drift or pin punch through the central

opening of the Rear End Plate to tap the Bearing out of

the End Plate. Refer to Dwg. TPD1271.

(Dwg. TPD1271)

8. Using a pin punch, tap the Throttle Retaining Pin (16)

and the Deflector Retaining Pin (19) out of the Handle.

The Throttle Retaining Pin is protected by an

embossed circular pad of metal. Insert the pin punch

into the middle of the pad to locate the Pin. Refer to

Dwg. TPD1272.

10.

11,

12.

13.

14.

TPD1272)

Grasp the Trigger (14) and pull the assembled throttle

out of the Motor Housing.

Using a pin punch and without damaging the Trigger,

remove the Trigger Pin (15).

Being careful not to lose the Reverse Valve Detent

Ball (10) or Reverse Valve Detent Spring (ll), slide

the Throttle Bushing Assembly (7), Throttle Valve

Assembly (4) and Throttle Rod Assembly (2) off the

Reverse Valve (9).

Using a pin punch and without damaging the Reverse

Lever (12), remove the Reverse Lever Retaining

Pin (13) and separate the Lever from the Valve.

Using a thin blade screwdriver, remove the Throttle

Valve Retainer (6) and slide the Throttle Valve

Assembly off the shaft of the Throttle Valve Rod.

Grasp the Exhaust Deflector Assembly (18) and pull it

out of the Housing.

ASSEMBLY

General Instructions

1. Always press on the

inner

ring of a ball-type bearing

when installing the bearing on a shaft.