Motor Reassembly Instructions (continued)
9.
Press
02649
Bearing into
01722
Bearing Plate. Press bearing plate and bearing onto rotor. Be sure that pin in bearing plate lines up with pin slot in cylinder.
Important:
Fit must be snug between bearing plates and cylinder. If too tight rotor will not turn freely. In this case, rotor must be lightly tapped at press
fit end so it will turn freely while still maintaining a snug fit. A loose fit will not achieve a proper preload of motor bearings and may cause premature wear
and failure of motor.
10.
Motor adjustment must now be checked . Pull end of rotor and twist (10-15 lbs. force). Rotor should turn freely without drag. If drag or rub is felt, then
increase preload by removing shim. Also, push end of rotor and twist (10-15 lbs. force). If drag or rub is felt, then deload by adding shim.
11.
Position valve body in padded vise with motor cavity facing up.
12.
Install motor assembly into housing. Make sure motor drops all the way into housing by aligning air passage way.
13.
Install
50383
Collar and
50381
Lock Nut onto valve body housing (left hand threads). Apply Hernon #940 PST Pipe Sealant (or equivalent)
to threads of valve body.
14.
Install valve body/motor housing onto angle housing. Apply Hernon #940 PST Pipe Sealant (or equivalent)to threads of angle housing. Tightening
50381
Lock Nut onto housing (left hand threads) (torque 45 N•m/400 in. - lbs.).
Note:
Throttle lever must be in desired position before securing
50381
Lock Nut.
Angle-head Reassembly:
1.
Position angle housing assembly in padded vise with angle cavity facing up.
2.
Install
50424
Bearing Washer into recessed cavity in angle housing.
3.
Press
12152
Bearing into recessed cavity against
50424
Bearing Washer.
4.
Press bevel gear onto spindle with gear teeth facing up. Press down to shaft step.
5.
Slip
50431
Bearing onto spindle until it rests against opposite side of shaft step.
6.
Install felt ring over spindle nut. Grip onto bevel gear and install spindle nut (Torque 34 N•m/300 in - lbs.).
7.
Place
52088
Spacer over felt ring so that felt ring protrudes thru inner diameter of spacer. Spacer should seat evenly on bearing.
8.
Install angle gear assembly into motor housing. Motor should drop completely down in angle housing so the end of the spindle seats into inner diameter of
12152
Bearing. Make sure bevel gear and pinion teeth line up correctly. Push down on the spindle to insure proper seating while rotating 360°. Install
shims from
52120
Shim pack to adjust for backlash or slight clearance from the gear to pinion teeth.
10.
Install
52089
Washer into angle housing and over felt ring and spacer. Larger inside diameter of washer goes over felt ring.
11.
Install
50384
Spindle Bearing Cover (left hand threads) (Torque 34 N•m/300 in - lbs.).
12.
Reassemble muffler assembly as shown on parts breakdown and secure with
50511
Screws (torque 4.5 N•m/40 in - lbs.).
Tool Reassembly Complete.
Important:
Grease should be applied to the gears of the tool before operation. Dynabrade recommends using their
95542
Grease and
95541
Grease Gun.
Locate grease fitting in angle housing and inject one full gun load of grease into gear case. Also, 2 or 3 drops of Dynabrade Air Lube (P/N
95842
) or
equivalent should be placed directly into air inlet with throttle lever depressed.
Operate tool for 30 seconds prior to application to workpiece to determine if tool is working properly and safely and to let lubricating oils properly penetrate
motor parts. If motor does not operate properly or operates at a higher RPM than marked on the tool, the tool should be serviced to correct the cause before use.
Optional:
(To adjust throttle lever position)
1.
Secure valve body in softjaw vise with
50362
Angle Housing facing up.
2.
Slide Back
50383
Collar to expose
50381
Lock Nut.
3.
Using a 34.0 mm crows foot, and firmly holding motor housing, turn lock nut counter clockwise to loosen assembly.
4.
Reposition throttle lever to desired position. Allow for additional rotation due to torquing.
5.
Using the 34.0 mm crows foot and a torque wrench, tighten lock nut (45 N•m/400 in - lbs.).
Note:
Hold motor housing firmly to reduce housing rotation.
6.
Replace collar and remove from vise.
DYNABRADE
®
DYNABRADE, INC.,
8989 Sheridan Drive
•
Clarence, NY 14031-1490
•
Phone: (716) 631-0100
•
Fax: 716-631-2073
•
International Fax: 716-631-2524
DYNABRADE EUROPE S.àr.l.,
Zone Artisanale
•
L-5485 Wormeldange—Haut, Luxembourg
•
Telephone: 352 76 84 94
•
Fax: 352 76 84 95
© DYNABRADE, INC., 1996
PRINTED IN USA
Dynabrade Air Lube
•
Formulated for pneumatic equipment.
•
Absorbs up to 10% of its weight in water.
•
Prevents rust and formation of sludge.
•
Keeps pneumatic tools operating longer
with greater power and less down time.
95842
: 1pt. (473 m)
95843
: 1gal. (3.8L)
Grease and Grease Gun
•
Multi-purpose grease for all types of
bearings, cams, gears.
•
High film strength; excellent resistance
to water, steam, etc.
•
Workable range 0° F to 300°F.
95541
: Push type grease gun
95542
: 10 oz. (283.5 g) tube
