Page 33
Notice G05 - 3 590 503
Issue: 11/2011 - Rev.A
ERVOR (SCA) - 6, Rue Désiré Granet - Z.I. du Val d'Argent - 95100 ARGENTEUIL FRANCE
(33) 01 34 11 50 00
(33) 01 34 11 50 10
Web : www.ervor.com - Email : [email protected]
!
DISMOUNTING OF THE CRANKSHAFT
- Disassemble the coupling plate or the drive pulley and the air fan mounted on each end of
crankshaft (in case of difficulty remove the parts with a bearing-puller)
- Remove the bearing housing on the coupling side.
- Take out the bearing retaining circlips.
- Remove the bearing from the bearing plate with a bearing-puller.
- Remove the crankshaft spacer
- Remove the remaining bearing housing with the crankshaft.
- Rotate the crankshaft in the connecting rod until the balance weight will pass through the gap
in the piston block. This will allow the removal of the crankshaft through the side of the casing.
- Remove the baring housing with a bearing-puller
- The monobloc piston with the connecting rod can be removed after removal of the cylinders
REMOUNTING OF THE CRANKSHAFT
Position the piston with the connecting rod in the casing.
- Mount the crankshaft in the bearing
- Fit the assembly in the casing with the crankshaft in the correct orientation.
- Place the spacer on the side towards the circlips
- Fit the bearing housing
- Remount the air-fan and the coupling plate or the drive-pulley.
IMPORTANT
AFTER REASSEMBLY, MANUALLY CHECK THAT THE CONNECTING
ROD REVOLVES FREELY.
THE SPACER MUST HAVE LATERAL PLAY BETWEEN THE
CONNECTING ROD AND BEARING.
IF DURING ASSEMBLY THERE IS NO LATERAL PLAY, SLIGHTLY MOVE
THE CRANKSHAFT.
THE LATERAL PLAY OF THE SPACER SHOULD BE 0,5 TO 1 mm.
FITTING OF CRANKSHAFT - CONNECTING ROD - PISTON AXIS
FITTING THE CONNECTING ROD ON
THE CRANKSHAFT
-
ASSEMBLY PLAY ...................................................... 0,015 to 0,050 mm
- WEAR PLAY .............................................................. 0,07 to 0,08 mm
FITTING THE PISTON SPINDLE IN THE CONNECTING ROD
-
ASSEMBLY PLAY ...................................................... 0,010 to 0,015 mm
- WEAR PLAY .............................................................. 0,05 to 0,06 mm or oval
FITTING THE PISTON SPINDLE IN THE PISTON
- ASSEMBLY PLAY ...................................................... press fit
- WEAR PLAY .............................................................. rotation of piston spindle in the bore
