Dynabrade 52374 Manual - Página 6

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Assembly Instructions - (Continued)

Important: Manufacturer's warranty is void if tool is disassembled before warranty expires.

Please refer to parts breakdown for part identification.

12. Press 02057 Bearing onto rotor and into 51923 Rear Bearing Plate hole until it is seated.

Important: While pressing 02057 Bearing, make certain to contact inner race of bearing. Cylinder must fit snug between

bearing plates. If too tight, rotor will not turn freely. Rotor must be lightly tapped at press fit end until rotor spins freely,

maintain a snug fit. A loose fit will not achieve the proper preload on motor bearings.

13. Add one drop of Loctite

HAND thread) with a slotted screw head. Torque to 2 N•m (18 lbs.-in.).

14. Install motor assembly into housing, making sure motor drops all the way into housing. Note: Align both 96445 Coiled Pins

to slots in insert and against 51924 Gasket.

15. Install 95438 O-Ring onto 53620 Adapter and slide adapter into housing and over 54520 Bearing.

16. Place 96498 Wave Washer onto 53620 Adapter.

17. Apply a small amount of Loctite

separately) or an adjustable pin wrench. Torque cover to 35 N•m (310 lbs.-in.).

Motor Assembly Complete.

Housing Assembly:

1. Secure housing using 51989 repair Collar (see back cover for Optional Accessories) with wheel adapter facing downward.

2. Install 51945 Valve Seat by aligning 3 male prongs with three deep slots on insert. Make certain valve seat is pressed flat

against base of pocket.

Note: Add a few drops of Dynabrade Air Lube (P/N 95842) to pocket walls before inserting 51945 Valve Seal.

3. Install 51944 Tip Valve as shown.

4. Slide 51942 Baffle into housing long end in first, and place 51941 Spring into shallow wall end of baffle.

5. Pre-assemble 51937 Inlet Bushing by sliding 51939 Silencer Plate, 51940 Spacer over male thread and set 96442 O-Ring

into groove at the base of thread. Slide 51943 Spring into bushing and up to the two 51938 Screens.

6. Apply one drop of Loctite

7. Align small inside diameter of 51943 Spring to cone point on 51944 Tip Valve and thread 51937 Inlet Bushing and sub-

assembly into place. Torque bushing to 35 N•m (310 lbs.-in.).

8. Slide 96443 O-Ring onto 51946 Valve Stem and slide sub-assembly until o-ring passes through housing hole. Make certain

valve stem assembly slides freely after the o-ring passes through the hole.

9. Remove housing from 51989 Repair Collar and place repair collar onto the bench top with the part number identifier against

the bench. Align the throttle lever holes to housing pin hole and rest the housing and throttle lever onto the legs of the repair

collar. Press 96444 Coiled Pin into lever hole and center into housing.

10. Install 53624 Guard Assembly over 51961 Housing Cover and position guard to best protect the operator before

tightening bolt. Regularly inspect guard for wear, guards subject to wheel breakage must be replaced.

Important: Before operating, places 2-3 drops of Dynabrade Air Lube (P/N 95842) directly into inlet with throttle lever

depressed. Operate tool for 30 seconds to allow air lube to properly lubricate internal motor components.

11. Slide 51963 Backup Flange onto 53615 Type 1 Wheel Adapter. Align flange slot over the spindle flats and against

the adapter base.

12. Then install new blotter and reinforced type 1 wheel, make certain the wheel speed rating is equal to or greater than the tool

RPM rating. Follow the recommended inspection and /or mounting procedures from the tool manual. Install second blotter

against wheel and slide 51964 Front Flange onto spindle.

Note: Wheel should slide freely over the spindle length, with minimal clearance, and firmly against the blotter and drive

flange. Clearance over the spindle size to be approximately .007 in. (.17 mm) maximum.

13. Secure 96511 Spindle Nut.

Caution: Tighten spindle nut only enough to prevent the abrasive wheel from spinning under working conditions. Over

tightening the spindle nut can cause damage to the abrasive wheel and/or flanges. Before starting the grinder with an

abrasive wheel, it should be tested in an enclosed protective area. The operator must check to make sure that no one is in

the unguarded plane of the wheel rotation. Increase the speed of the tool gradually. The wheel must be run at free speed

for at least one minute before applying the wheel to work. During this time, check the tool for excessive vibration and noise.

The cause of unusual vibration and noise must be determined and corrected before use.

Tool Assembly Complete. Please allow 30 minutes for adhesives to cure before operating tool.

Important: Motor should now be tested for proper operation at 90 PSIG max. If tool operates at higher RPM than marked on

the tool of if vibration levels seem abnormal, the tool should be serviced to correct the cause before use.

Loctite

is a registered trademark of Loctite Corp.

243 (or equiv.) to governor assembly male thread and screw governor assembly into place (LEFT

567 to housing thread, and install 51961 Housing Cover using 50971 Pin Wrench (ordered

243 (or equiv.) to 51937 Inlet Bushing thread.