Bosch DIE 165 R User Manual download pdf (Page 23)

Inspectionof crankshaft

The crankshaft cannot be reconditioned and must be re-

placed by a new one in the event of defects or damage.

Some crankshafts display slight blue discoloration of

the webs round the crank pin. This is perfectly normal

and is the result of heat treatment round the crank pin

hole. Inspect the connecting-rod big-end. If binding

marks and discoloration of the sides are in evidence,

the crankshaft must be replaced.

Fig 7:5

The connecting-rod should display no perceptible radial

(up and down) play while axial play should be 1.2-1.6

mm.

Fig 7:6

Crankcase,crankshaft ~

Assembling

the crankcase

Fig 7:7

Heat the magneto side crankcase half to about 130°C.

Fit the crankshaft with ball bearings in the bearing seat.

Check that the correct crankshaft journal is mounted

and that the ball bearing abuts against the bottom of the

bearing seat.

Fig 7:8

Smear a little grease on the magneto side sealing surfa-

ce to keep the gasket in position. Fit a new gasket. Heat

the drive side crankcase half in the same manner as be-

fore and press it down over the crankshaft and the

magneto side.

Check that the locating pins mate correctly and that

the gasket is not dislodged.

Fit the crankcase screws in place and tighten them

alternately as shown in Fig. 7:9. Cut away any surplus

gasket material.

Mount the ball bearings on the ends of the crankshaft.

This will be facilitated by carefully heating the bearings

to about 80°C before fitting them on the crankshaft. Tap

the bearings down against the shoulder, using sealing

ring assembly sleeve No. 5025079-01.

7:2

For Husqvarna Parts Call 606-678-9623 or 606-561-4983

www.mymowerparts.com

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Bosch DIE 165 R User Manual Page 23