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Stihl BT 131, Руководство по обслуживанию

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BT 131

23

14.1 Tools, Servicing Aids

14 Tools, Servicing Aids

Part No.

Part Name

Application

0811 611 8200

Pliers DIN 5254-A10

Removing, installing circlip on clutch drum

0811 641 8380

Pliers DIN 5256-C19

Removing, installing circlip on clutch drum’s ball 

bearing

0812 542 2104

Socket bit, T27x125

Removing and installing spline socket screws with 

electric or pneumatic screwdrivers; tightening 

down screws with torque wrench

1115 893 4600

Installing sleeve

Installing ball bearings in clutch housing, clutch 

drum, ball bearing in gearbox cover

1117 890 0900

Assembly tube

Unhooking, attaching spring to anchor pin

1117 893 7200

Press arbor

Removing ball bearings from clutch housing, 

clutch drum; installing oil seal, ball bearing in gear

-

box cover, ball bearing in gearbox housing

4119 893 7200

Press arbor

Removing, installing ball bearing in clutch housing

5910 890 0302

Torque wrench with optical/acoustic signal

Screws (1 to 18 Nm / 9 to 160 lbf.in)

5910 890 0312

Torque wrench with optical/acoustic signal

Screws (6 to 80 Nm / 5 to 60 lbf.ft)

5910 890 2415

Screwdriver, T27x200

Removing, installing spline socket screws

5910 893 0510

Stud puller, M5

Removing collar screws from fan housing

9216 263 0700

M5 nut

Installing collar screws in fan housing

Open-end wrench, 8 mm

Removing, fitting nuts on handlebars and anti-

vibration elements; removing, fitting clutch hous

-

ing mounting screws from/on powerhead

Socket, 8 mm

Removing, fitting nuts on handlebars and anti-

vibration elements

Socket, 10 mm

Removing, fitting clutch mounting screws

Hot air blower

Removing, installing ball bearings in gearbox 

housing, gearbox cover and clutch housing

Knife

Cutting open assist handle

Tube, 16 mm (0.63 in) inside diameter

Supporting clutch drum bearing

Pin punch, 3 mm (1/8 in)

Driving out pivot pins of brake lever and brake 

spring

Pin punch, 5 mm (1/4 in)

Freeing gearbox housing from gearbox cover; 

driving out oil seal in gearbox cover

0781 120 1110

STIHL multipurpose grease

Lubricating brake lever pivot pin; lubricating seal

-

ing lips of oil seal

0781 120 1118

STIHL gear grease

Packing gearbox housing, clutch housing with 

grease: lubricating brake band

0781 957 9000

STIHL OH 723 press fluid

Rubber elements, AV elements, assist handle

0783 830 2000

Dirko HT red sealant

Sealing clutch housing and gearbox housing

0786 111 2101

Loctite 242 (medium-strength threadlocking 

adhesive)

Securing pivot pins in gearbox, collar screws in 

fan housing

Standard commercial solvent-based degreasant 

containing no chlorinated or halogenated 

hydrocarbons

Degreasing clamp surfaces on handlebar

Содержание BT 131

Страница 1: ... 2016 10 STIHL BT 131 Service Manual ...

Страница 2: ......

Страница 3: ... Guide Shroud 9 8 1 Tools Servicing Aids 9 8 2 Removing the Collar Screws 9 8 3 Installing the Collar Screws 9 8 4 Removing the Fan Housing 9 8 5 Installing the Fan Housing 10 8 6 Removing the Air Guide Shroud 10 8 7 Installing the Air Guide Shroud 10 9 Clutch Housing with Gearbox Handle Frame 11 9 1 Tools Servicing Aids 11 9 2 Removing Clutch Housing with Gearbox 11 9 3 Installing Clutch Housing ...

Страница 4: ...cuts or burns N If sharp or hot components have to be handled during a repair Wear protective gloves 2 2 Safety Glasses Particles and objects can be thrown into the air at high speed during a repair Thrown particles or objects can cause eye injuries N If there is a risk of particles being thrown during the repair Wear safety glasses 2 3 Spare Parts If spare parts not approved by STIHL are installe...

Страница 5: ...ke band stretched worn or broken Replace brake band Clutch drum worn Install new clutch drum Condition Cause Remedy Loud noises Ball bearings damaged or worn Inspect bearings in clutch housing and gearbox replace if necessary Pinion output shaft or gears damaged or worn Replace pinion set at input and output sides Insufficient or no grease in gearbox and or clutch housing Replace pinion set at inp...

Страница 6: ...ssist handle 9 and elbow 1 N Hold screws 4 steady and unscrew the nuts 5 N Pull out the screws 4 N Pull out the elbows 1 5 3 Removing the Control Handle N Remove handlebar 6 together with control handle 2 5 2 N Loosen the screws 3 N Pull the handlebar 6 out of the control handle 2 Disassemble and assemble the control handle 2 see Series 4180 Powerhead service manual 5 4 Removing the Assist Handle ...

Страница 7: ...andlebar 6 as far as bend N Tighten down the screws 3 N Fit handlebar 6 together with control handle 2 5 7 5 7 Fitting the Handlebars N Push the elbows 1 into place N Insert the screws 4 from outside N Hold the screws 4 steady and fit and tighten down the nuts 5 N Push the handlebars 6 and 10 into place N Insert the screws 8 from outside N Hold the screws 8 steady and fit and tighten down the nuts...

Страница 8: ...r with tubes 6 N Coat rubber buffers 3 and stops 4 in area of tubes with press fluid N Pull off the rubber buffers 3 N Pull off the stops 4 6 3 Installing the Antivibration Elements N Align tubes 6 so that the labels face up N Coat stops 4 and rubber buffers 3 with press fluid before installing N Push the stops 4 onto the tubes 6 N Push the rubber buffers 3 onto the tubes 6 6 Antivibration System ...

Страница 9: ... 3 with press fluid N Assemble the AV housing 2 N Fit the AV housing 2 with tube 8 on the frame N Insert the screws 1 from outside N Hold the screws 1 steady and fit and tighten down the nuts 5 N Install the handlebars 5 7 7 0000 GXX 2687 A0 ...

Страница 10: ...ousing 4 7 3 Removing and Installing the Clutch See Series 4180 Powerhead service manual 7 4 Disassembling and Assembling the Powerhead Refer to Series 4180 Powerhead service manual for diagnosis and repair procedures on powerhead 7 5 Installing the Powerhead N Position the powerhead 5 on the clutch housing 4 N Fit the nuts 3 on the collar screws in the powerhead 5 and tighten them down N Push the...

Страница 11: ... 8 3 Installing the Collar Screws N Coat threads 5 of collar screws 3 with Loctite 242 N Fit M5 nuts on the collar screws 3 N Insert and tighten down the collar screws 3 N Unscrew the M5 nuts N Install the powerhead 7 2 N Install handlebar together with control handle 5 7 8 4 Removing the Fan Housing N Preparations 3 1 N Remove handlebar together with control handle 5 2 N Remove the powerhead 7 2 ...

Страница 12: ...g 1 are in the holes in the engine pan N Insert and tighten down the screws 4 N Install the powerhead 7 2 N Install handlebar together with control handle 5 7 8 6 Removing the Air Guide Shroud N Preparations 3 1 N Take out the screw 5 N Unhook and remove the air guide shroud 6 N Remove the bushing 7 8 7 Installing the Air Guide Shroud N Fit bushing 7 in the air guide shroud 6 N Fit retaining lugs ...

Страница 13: ...ng with Gearbox N Fit clutch housing 1 with gearbox 4 in the handle frame 7 so that the screw plug 9 faces the narrow side arrow of the base plate N Insert and tighten down the screws 8 N Install the powerhead 7 2 N Install handlebar together with control handle 5 7 9 4 Removing the Clutch Housing from the Gearbox N Preparations 3 1 N Remove handlebar together with control handle 5 2 N Remove the ...

Страница 14: ...aling face arrows and check the following points Sealant forms a bead a 1 mm 0 04 in high Sealant does not project into the clutch housing 1 N Position the gearbox 4 on the clutch housing 1 so that the pinion shaft 3 is seated in the ball bearing in the gearbox 4 N Fit screws 5 and 6 and tighten them down crosswise in an alternate pattern N Install clutch housing together with gearbox 9 3 N Instal...

Страница 15: ...BT 131 13 N Install the antivibration elements 6 3 N Install the handlebars 5 6 ...

Страница 16: ...signs of wear If there are visible signs of wear on the inside diameter of the clutch drum 1 N Measure remaining wall thickness a If the remaining wall thickness a is less than 80 of the original wall thickness b N Install a new clutch drum 1 10 3 10 3 Removing the Clutch Drum N Preparations 3 1 N Remove handlebar together with control handle 5 2 N Remove the powerhead 7 2 N Remove clutch housing ...

Страница 17: ...talling sleeve 5 1115 893 4600 so that the annular groove is exposed on the inside N Fit circlip 3 with pliers DIN 5254 A10 0811 611 8200 so that it is seated in the groove in the input journal of the clutch drum 1 N Fit clutch housing on the gearbox 9 5 N Install the clutch housing with gearbox 9 3 N Install the powerhead 7 2 N Install handlebar together with control handle 5 7 5 2 4 1 0000 GXX 2...

Страница 18: ...disengage the auger brake N Open the throttle wide N Activate the auger brake manually the auger must come to a standstill without any perceptible delay 11 3 Removing the Brake Band N Preparations 3 1 N Disengage the auger brake N Remove handlebar together with control handle 5 2 N Remove the powerhead 7 2 N Remove clutch housing together with gearbox 9 2 N Remove clutch housing from the gearbox 9...

Страница 19: ...10 N Push out the retainer 2 N Pull out the brake lever 9 11 6 Removing the Flat Springs N Remove the brake lever 11 5 N Take out the screw 3 N Remove the hooked flat spring 4 N Remove the two flat spring 5 N Take out the nut 6 11 7 Removing the Pins N Remove the flat springs 11 6 N Use 3 mm 1 8 in diameter pin punch to drive out pin 8 from the outside N Use 3 mm 1 17 in diameter pin punch to driv...

Страница 20: ...must engage the opening in the retainer 2 N Insert bearing pin 1 and tighten it down firmly N Fit E clip 10 in groove of pin 8 N Attach the brake spring 16 to the lever 9 N Use assembly tool 1117 890 0900 19 to attach brake spring 16 to the anchor pin N Install the brake band 11 11 11 11 Installing the Brake Band N Disengage the auger brake N Lubricate inside of brake band 15 with gear grease N At...

Страница 21: ...ghten down the screw 12 N Install the clutch drum 10 4 N Fit clutch housing on the gearbox 9 5 N Install clutch housing together with gearbox 9 3 N Install the powerhead 7 2 N Install handlebar together with control handle 5 7 ...

Страница 22: ... bearings 3 and 4 N Heat the clutch housing 1 in area of ball bearing 2 to about 120 C 250 F N Carefully knock out the ball bearing 2 12 3 Installing the Clutch Drum N Heat the clutch housing 1 in area of bearing seats to about 120 C 250 F N Use installing sleeve 1115 893 4600 to fit the ball bearing 2 N Press home closed ball bearing 3 with press arbor 4119 893 7200 N Use press arbor 4119 893 720...

Страница 23: ...from the gearbox 9 4 N Take out the screw 3 N Insert 5 mm 1 4in diameter pin punch 11 through bore arrow and tap to release the gearbox housing 1 N Pry the gearbox housing 1 off the gearbox cover 3 N Pull the output shaft 9 with gear 10 out of the ball bearing N Push the output shaft 9 out of the gear 10 N Heat the gearbox cover 4 in bearing seat area to about 120 C 250 F N Knock the gearbox cover...

Страница 24: ... about 85 g 3 oz gear grease to the gearbox housing so that the sealing face arrows remains free from grease N Apply Dirko sealant to the gearbox housing 1 sealing face arrows and check the following points Sealant forms a bead a 1 mm 0 04 in high Sealant does not project into the gearbox housing 1 N Line up the gearbox cover 4 so that the output shaft 9 engages the ball bearing 7 N Push the gearb...

Страница 25: ...using 9216 263 0700 M5 nut Installing collar screws in fan housing Open end wrench 8 mm Removing fitting nuts on handlebars and anti vibration elements removing fitting clutch hous ing mounting screws from on powerhead Socket 8 mm Removing fitting nuts on handlebars and anti vibration elements Socket 10 mm Removing fitting clutch mounting screws Hot air blower Removing installing ball bearings in ...

Страница 26: ...BT 131 24 ...

Страница 27: ......

Страница 28: ...RA_023_2016_01_01 englisch G www stihl com ...

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