Dynabrade 52689 Veiligheid, bediening en onderhoud - Pagina 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.
10. Peel backing off 51924 Gasket and align it firmly in place onto 51923 Rear Bearing Plate.
11. Place 51923 Rear Bearing Plate over rotor mandrel and insert raised boss on rear bearing plate into cylinder diameter, while
inserting short coiled pin into cylinder slot. Be sure inlet slot on rear bearing plate line up with inlet slot on cylinder. Flip
cylinder end to end and repeat step 8 for correct assembly.
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 while
still maintaining 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 lb.-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 lb.-in.).
18. Install collet insert and 50012 Collet Cap.
Motor Assembly Complete.
Housing Assembly:
1. Secure housing using 51989 Repair Collar ( see back cover for Optional Accessories ) with collet facing down.
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 lb.-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.
Tool Assembly Complete. Please allow 30 minutes for adhesives to cure before operating tool.
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. Motor should now be tested for
proper operation at 90 PSIG max. If tool operates at a higher RPM than marked on the tool or if vibration and sound 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 51947 Housing Cover using 50971 Pin Wrench ( ordered
®
®
243 (or equiv.) to 51937 Inlet Bushing thread.
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