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Service and Repair Manual

Model 845S

6

FIG.

%

NOTES

54, 55, 56 TO REMOVE BELLY SHROUD #56 FROM TOOL, INSERT SMALL SCREW

DRIVER INTO GROOVE BETWEEN BELLY AND SIDE SHROUDS #54 AND

#55, ABOUT 1/3 OF THE WAY FROM THE MOTOR END, AS SHOWN. PRY

OUT AND DOWN ON BOTH SIDES OF THE TOOL.

54, 55

TO INSTALL THE SIDE SHROUDS #54 AND #55, THE TOP HINGE OF THE

SHROUDS MUST BE COMPLETELY INTERLOCKED, THEN THE BACK

SIDE ROTATED CLOSED AROUND THE TOOL.

73

LUBRICATE ALL BORES IN SPINDLE #73 WITH A MEDIUM COATING OF

GREASE.

63, 108, 109 LUBRICATE RUBBER DAMPING WASHER #63, BARREL THRUST

WASHER #108 AND STRIKER CUSHION WASHER #109 WITH A MEDIUM

COATING OF GREASE BEFORE ASSEMBLY.

10, 100

PRESS NEEDLE BEARING #10 IN ROD #100 SO THAT THE SAME

AMOUNT STICKS OUT ON BOTH SIDES OF THE ROD, AS SHOWN.

9, 71

PRESS (2) NEEDLE BEARINGS #9 INTO HOLLOW CLUTCH SHAFT #71,

FLUSH WITH THE ENDS OF THE SHAFT.

11, 12, 46 PRESS NEEDLE BEARINGS #11 AND #12 FLUSH TO THE MACHINED

FACES ON BOTH ENDS OF THE INTERMEDIATE HOUSING #46.

9, 44

PRESS NEEDLE BEARING #9 INTO CRANKCASE #44, FLUSH WITH TOP

OF BORE, AS SHOWN.

81

LIGHTLY GREASE INSIDE OF BARREL #81 BEFORE ASSEMBLY.

48, 73

SMALL OUTSIDE DIAMETER OF SPINDLE #73 IS TO BELUBRICATED

WITH A LIGHT COAT OF GREASE BEFORE ASSEMBLING THE NOSE

ASSEMBLY #48 TO THE TOOL.

48, 73, 102 NOSE ASSEMBLY #48 MUST BE PLACED SQUARELY OVER SPINDLE #73,

WHEN ASSEMBLING, TO PREVENT DAMAGE TO OIL SEAL #102.

14, 19, 20, 23 FASTENERS #14, #19, #20 AND #23 ARE TO BE RE-ASSEMBLED USING

BLUE LOCTITE.

48, 102

LUBRICATE BORE IN NOSE ASSEMBLY #48 BEFORE PRESSING OIL

SEAL #102 INTO PLACE.

60, 61, 62, LUBRICATE O-RINGS #60, #61, #62, #66 AND #67 WITH GREASE.

66, 67

69

INSTALL BEVEL SNAP RING #69 WITH BEVEL SIDE UP.

4, 50, 80

PLACE BEARING CUP #80 ON SMALL ARMATURE BEARING #4 BEFORE

INSTALLING MOTOR COVER #50.

41

BRUSH SPRINGS #41 ARE TO BE WOUND 1/2 TURN TO  ENGAGE

BRUSHES.

4

RUBBER SEAL SIDE OF BALL BEARING #4 TO FACE FAN.

95, 98

FACES OF PISTON #95 AND RAM #98 ARE TO BE FREE OF GREASE.

105

WHEN REASSEMBLING BARREL AND CLUTCH SCREWS INTO EXISTING

CRANKCASE, MAKE SURE SCREW IS STARTED IN EXISTING THREAD.

DO NOT CREATE TWO SETS OF THREADS IN ONE HOLE.

Summary of Contents for 845S

Page 1: ...845S GB DateCode 0001L2001 9800 0332 01 a ...

Page 2: ...to prevent any adverse damage occuring ALL SEALS GASKETS GREASE OR OTHER PARTS DEEMED NECESSARY FOR SERVICINGARE IN THE SERVICE KIT ALLNEEDLE ROLLER BEARINGS SHOULD BE PRESSED WITH THE ROUNDED EDGE ENTERINGTHE BORE FIRST ANDTHE PRESSTOOL PRESSINGAGAINSTTHE FLAT SURFACE OF THE BEARING Cleaning All mechanical parts with the exception of any sealed bearings should be cleaned in a suitable cleaning fl...

Page 3: ... 60 Handle Cushion 1 110 9170 3254 00 Rubber Washer 2 114 9170 4660 90 Fan 1 123 9170 3253 80 Cord Protector 1 SEE PAGE 5 FOR ADDITIONAL LUBRICATION AND SERVICE NOTES FIG PART NO DESCRIPTIONOFPART NO REQ 2 9170 4667 30 5 mm Steel Ball 2 4 9170 3251 20 Ball Bearing 1 7 9170 3251 60 Ball Bearing 1 13 9170 3253 10 Pivot Nut 1 15 9170 3252 90 Pivot Bolt 1 16 9170 3251 00 M6 x 1 0 x 120 Pan Hd Slt Tapt...

Page 4: ..._______________ ___________________________________________ ________________________________________ ___________________________________________ FASTENERTORQUESPECIFICATIONS IN LBS SEATING TORQUE FIG NO MINIMUM MAXIMUM 14 120 140 15 20 25 16 30 35 19 30 35 20 25 30 21 20 25 22 25 30 25 30 20 25 6 10 105 60 70 HANDLE HALVES AND SHROUDS CUSHION GRIP CRANKCASE COVER 23 24 9170 3237 20 CARBON BRUSH SE...

Page 5: ...170 3254 70 M4 x 0 7 x 14 Pan Hd Slt Taptite T 20 4 28 9170 3257 80 External Retaining Ring 1 43 9170 3255 90 Bearing Retainer 1 44 9170 4662 10 Crankcase 1 45 9170 3254 40 Crankcase Cover 1 46 9170 4662 30 Intermediate Housing 1 48 9170 4662 50 Nose Assembly 1 49 9170 3254 50 Cap Cover 1 57 9170 3257 30 Bevel Gear 1 58 9170 4662 90 Cap Seal 1 60 9170 4664 40 O Ring 1 61 9170 3255 80 O Ring 1 63 9...

Page 6: ...ED FACESONBOTHENDSOFTHEINTERMEDIATEHOUSING 46 9 44 PRESSNEEDLEBEARING 9INTOCRANKCASE 44 FLUSHWITHTOP OF BORE ASSHOWN 81 LIGHTLYGREASEINSIDEOFBARREL 81BEFOREASSEMBLY 48 73 SMALLOUTSIDEDIAMETEROFSPINDLE 73ISTOBELUBRICATED WITHALIGHTCOATOFGREASEBEFOREASSEMBLINGTHENOSE ASSEMBLY 48TOTHETOOL 48 73 102 NOSEASSEMBLY 48MUSTBEPLACEDSQUARELYOVERSPINDLE 73 WHENASSEMBLING TOPREVENTDAMAGETOOILSEAL 102 14 19 20 ...

Page 7: ...nics boat to retain leads as shown Cord to be inserted into clamp trap Cord to extend 1 4 minimum above top of clamp For 120 V only See below for 110 V and 230 V Fast on terminals must be completely connected between leads 4 and 9 Keep leads away from potential pinch points Electronics Assembly WIRING SPECIFICATIONS SWITCH CONNECTIONS Bottom view Tuck leads 5 and 6 away from armature BRUSH CARD AS...

Page 8: ...00 Volts min C Armatuure shaft to commutator 3000 Volts min ELECTRICAL PERFORMANCE TEST READINGS CLUTCH SLIP Measured on disassembly assembly 35 45ft lbs 47 61Nm Non Electrical Test Note On all test readings or 5 of figures shown is acceptable 845S 845S MODEL 110V 120V 220V 240V ARMATURES 440 506 Ohms 440 506 Ohms 1 283 1 477 Ohms FIELD COILS 845S 110V 120V 220V 240V 4 5 6 5 Amps 4 5 6 5 Amps 2 9 ...

Page 9: ...d without breakdown or flashover for a few seconds 3 If the armature has been tested remove the carbon brushes before carrying out the test thus avoiding overstressing the armature insulation system 4 The test voltage must be applied between the main casting and each live pin of the plug in succession Running Test 1 Ensure the unit is switched ON before testing Operate the unit for approx 10 minut...

Page 10: ...Atlas Copco Berema AB Sickla Industriväg 1A S 105 23 Nacka Sweden Telephone 46 0 8 743 9600 Fax 46 0 8 743 9650 9800 0332 01 a 54 24 0975 Drwg 3 04 02 ...

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