ARO BR053B series Benutzerhandbuch - Seite 5

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DISASSEMBLY/ASSEMBLY

INSTRUCTIONS

DO NOT remove pinion from housing unless damage is evi-

dent. To remove pinion, grasp pinion in a vise and tap housing

with a soft face hammer.

Unthread and remove lock nut (48) -LEFT HAND THREADS

- releasing bearing (59).

To disassemble drive assembly, unthread lock nut (82) -

LEFT HAND THREADS -and pull drive assembly from hous-

ing (65). DO NOT disassemble further unless damage is evi-

dent. NOTE: Drive assembly contains 22 small balls which will

fall out if drive assembly is disassembled.

RIGHT-ANGLE

ASSEMBLY

(LIGHT DUTY)

Lubricate bearings upon assembly.

Assemble bearing (79) and gear (78, 83, 88 or 90) to shaft

(80).

Assemble gear and components to lock nut (82),

securing

balls (81) in groove in gear.

Assemble lock nut (82) to housing (85) - LEFT HAND

THREADS.

Assemble bearing (59) to body, securing with lock nut (48) -

LEFT HAND THREADS.

Assemble bearing (63) to pinion (64).

Assemble pinion to housing (65).

Assemble housing to body (60) to seat needle bearing. Un-

thread and remove body. NOTE: Bearing (63) is to be located

.525" from end of housing (65) (see illustration, below).

Assemble shims (61 and 62) and lock nut (47) to body,

Assemble housing (65) to body (60) - LEFT HAND

THREADS.

Assemble coupling (58) to pinion and assemble right-angle

section to tool, securing with lock nut (47) - LEFT HAND

THREADS,

GEARING

DISASSEMBLY

Remove right-angle section from tool.

Remove ring gear (24 or 30) using a wrench on flats.

Remove snap ring (29) and washer (28) where applicable.

Remove spindle(s) and gears from ring gear. NOTE: Keep

gears grouped with mating spindle when disassembling

double reduction gearing.

Do not remove bearing (27) or spacer (26) unless damage is

evident.

To remove bearing (27) and spacer (26) from ring gear, press

on spacer (26) from inside splined end of ring gear.

Do not remove gears (35 or 38) from carrier assemblies un-

less damage is evident. Gears (35 and 38) are press fit onto

carrier assemblies.

GEARING

ASSEMBLY

Assemble spacer (26) and bearing (27) into ring gear. NOTE:

Press on outer race of bearing and press to shoulder of ring

gear.

Coat shafts of spindle with ARO 33153 grease.

Assemble gears and bearings (33) to shafts of mating spindle.

Assemble carrier assembly to spindle assembly for models

with double reduction gearing.

M22

Lubricate sets of gears liberally with ARO 33153 grease (see

"Routine Lubrication Requirements", page 3).

Assemble spindle(s) and gearing into ring gear. Rotate

spindle(s) and gears to align gear teeth with splines of ring

gear.

Assemble washer (28) and snap ring (29) to spindle, where

applicable.

Thread ring gear (24 or 30) to tool, tightening with wrench on

flats.

Assemble right-angle section to tool.

MOTOR DISASSEMBLY

Remove right-angle section and gearing from tool.

Remove spacer (22) and "O" ring (21).

Tap front edge of housing to remove motor assembly. Locat-

ing pin (23) should also come out.

Tap drive end of rotor with a soft face hammer; motor will come

apart. NOTE: Bearings are light press fit on rotor.

Remove end plate (15) and bearing (14) from rotor.

MOTOR ASSEMBLY

Lubricate bearing (14) with ARO 33153 grease.

Assemble bearing (14) to end plate (15). NOTE: Press on out-

er race of bearing.

Assemble end plate (15) to rotor. NOTE: Press on inner race

of bearing.

Coat five rotor blades (16) with ARO 29665 spindle oil and as-

semble to rotor slots - straight side out.

Coat i.d. of cylinder (18) with ARO 29665 spindle oil and as-

semble over rotor. NOTE: Air inlet slots in end of cylinder must

be aligned with two air inlet slots in end plate (15).

Assemble bearing (20) to end plate (19). NOTE: Press on out-

er race of bearing.

Assemble end plate (19) to rotor. NOTE: Press on inner race

of bearing. Be sure rotor turns without binding.

Insert locating pin (23) into .096" diameter blind hole at bottom

of motor cavity in housing.

Align notches of end plates and cylinder and install motor into

housing, aligning notches with locating pin (23).

Grease and assemble "O" ring (21) to end plate (19).

Assemble spacer (22) to motor.

Assemble gearing and right-angle section to tool.

HOUSING

DISASSEMBLY

Clamp air inlet adapter (2) in a smooth face vise.

Unthread housing (9) with a strap type wrench.

Remove spacer (3), washer (4), exhaust cap (5), two fillers (6),

spring (7) and valve rod assembly (8). CAUTION: Do not re-

move or adjust rubber portion of valve rod (8), as it is preset at

the factory.

Remove screen (1) from inlet adapter (2).

Remove throttle pin (11) and spring (10).

HOUSING

ASSEMBLY

Lubricate throttle pin (11) with ARO 29665 spindle oil.

Install spring (10) and throttle pin (11) into housing. NOTE:

Align slot in throttle pin with air inlet holes in housing.

Install valve rod assembly (8) into housing. NOTE: Throttle pin

(11) should not pull out when valve rod (8) is seated properly.

Install two fillers (6) to exhaust cap (5).

Assemble exhaust cap (5) to housing, aligning lever with

throttle pin (11).

Assemble spring (7), washer (4) and spacer (3) to tool, secur-

ing with inlet adapter (2).

Clean and replace screen (1) in inlet adapter (2).