Manuels Connexes pour Malossi MHR
Sommaire des Matières pour Malossi MHR
- Page 1 MHR CYLINDER KITS Installation Instructions GROUPES THERMIQUES malossi.com Instructions de Montage 05/2008 - Rev. 12/2021 - 73 8565...
- Page 2 Dear Sir, we thank you very much for the preference you have given us by choosing our products. The consent of our customers is the most important incentive for the creativity of our designers and of all our company. Right from the very beginning, the objective of Malossi has been to make products of higher quality, in a fully satisfying requiremants with its customers.
- Page 3 TECHNICAL FEATURES cylinder kits CYLINDER - Material: special aluminium alloy with high percentage of silicon and titanium that guarantees exceptional strain strength even at high temperatures. - Heat treatment: special quenching and stabilizing treatment that gives the material increased toughness and strength, guaranteeing that mechanical and size specifications will remain unaltered for temperatures of up to 250 °C.
- Page 4 PISTON - Material: special aluminium alloy with a very high percentage of silicon and titanium that guarantees both excellent heat resistance and strain strength upon temperature variation. - External coating: graphite coating that guarantees a very low friction coefficient - Structure: reinforced in order to offer resistance to the stress suffered by cylinder units used for top-level competition, but at the same time light enough to reduce inertial force.
-
Page 5: Preliminary Operations
ASSEMBLY INSTRUCTIONS PRELIMINARY OPERATIONS Wash the entire vehicle, particularly the engine. Remove the old cylinder kit and carefully clean the housing where the cylinder rests, taking care that nothing falls inside the crankcase. AIR-cooled cylinder kits: For the assembly it is no necessary to modify the CRANKCASE. CYLINDER KIT Wash all the components of the modification system with petrol and blow them with compressed air, making sure in particular that there are no foreign bodies in the ports of the new cylinder. - Page 6 PISTON RINGS Fig. 1 Before piston rings assembly it is necessary to check the distance between the tips of the piston ring when inserted in the cylinder. The distance between the two extremities of the piston ring is normally indicated as “piston ring clearance”.
- Page 7 Piston ring machining - Fig. 2 Fig. 2 If the piston ring clereance is not included in the values indicated in Table 1, it is necessary to smooth the two piston ring extremities with an abrasive stone or with a diamond tool to obtain the right value for the cylinder that we have to assemble.
- Page 8 1) Assembling the PISTON Take the piston and insert a gudgeon pin circlip into one of the two piston recesses and then partially insert the gudgeon pin provided in the kit into the opposite side. Place the piston on the connecting rod with the opening or openings of the piston skirt facing the rear transfer ports of the piston, or with the arrow drawn on the piston crown facing the exhaust.
- Page 9 connecting rod is bent. If you do not wish to replace it, we recommend that you proceed as follows: insert a pin in the hole and lever it slightly to straighten the rod. When you think that you have succeeded in removing the problem, refit and then repeat the aforementioned operations several times until the cylinder liner and the piston are perfectly aligned.
-
Page 10: Reglage Du Squish
- Disassemble the head and measure the two wire extremities in the minumum point, then average the two value. - Assembly the cylinder basic gasket to obtain the optimum squish value for the cylinder kit that you will assemble (see Table 1 - pg. 20). Afin de garantir les prestations élevées des groupe thermique MHR REGLAGE DU SQUISH Le réglage de la valeur du squish se fait en variant l’épaisseur du joint de base du cylindre (joint se trouvant entre le cylindre et le carter). - Page 11 1.2 Kgm. N.B. Malossi heads supplied with O-rings must be assembled directly onto the cylinder without the insertion of any other gasket or sealing grease. HEAD - LIQUID-cooled cylinder kits Carefully clean the bottom of the cylinder and use compressed air to blow the O-ring slots.
-
Page 12: Cooling Circuit
COOLING CIRCUIT Once assembly operations have been completed connect the radiator pipe to the head, securing it with the relative clamp. Loosen the bleed valve and fit on a small rubber hose, place the other end of the hose in the expansion tank and start filling the tank. Continue this operation until the liquid reaches the maximum level and no air bubbles come from the hose. - Page 13 Remplacez les lamelles d’origine avec les lamelles fournies dans la transformation et réglez l’ouverture de la fin de course à 8 mm, mesurés sur le maximum de l’ouverture. KIT CARBURATEUR Nous vous conseillons de remplacer le kit carburateur d’origine par un kit carburateur MALOSSI étudié spécifiquement pour le type de scooter avec un Ø de diffuseur de minium 19mm. ALLUMAGE L’avance à...
-
Page 14: Carburant
Pour les modèles avec pompe à débit variable, étalonnez la pompe suivant les instructions indiquées, à l’aide de la vis de réglage du câble de transmission. Dans le cas d’utilisation extrême il est conseillé de la supprimer. HUILE LUBRIFIANTE Nous vous conseillons d’utiliser de l’huile de synthèse MALOSSI 7.3 et en cas d’utilisations sévères de l’huile 100% synthétique MALOSSI 7.1. RODAGE Après avoir monté... -
Page 15: General Care
Every 3000 km decarbonise the head, the piston crown, the exhaust and the silencer. Check that the piston rings are not carbonised and check also for wear at the meeting point (ring gap). The gap must never exceed 7-8 tenths of a millimetre. If it does, replace the piston rings with specific original MALOSSI piston-rings. GENERAL CARE Every time the cylinder kit is disassembled, replace the head and cylinder bottom gaskets with a new series in order to guarantee a perfect seal. -
Page 16: Garantie
Customer approval is the greatest form of encouragement a company can have for creativity and efficiency. Each Malossi product sold is conceived, designed and developed at the factories of the parent company with the precise aim of satisfying the needs of the most demanding motorcyclists who wish to race tune their vehicle. - Page 17 - been fitted with either original or Malossi parts; you can look up our Internet site at www.malossi.com, where you will find all the correct technical information by examining the relative tables for your vehicle. If this is not enough you can, along with your mechanic, explain the problem in greater detail by completing the special form inserted in the “contact”...
- Page 18 - Nous déclinons toute responsabilité dérivant de l’emploi impropre de nos produits. Les produits Malossi appartenant à la ligne MHR ne sont couverts par aucune forme de garantie à moins qu’il ne s’agisse du cas très rare d’un composant qui n’ait pas été relevé en phase d’essai et qui ait un vrai défaut de production à l’origine et non pas une rupture par fatigue ou grippage.
-
Page 19: Assembly Diagram / Schéma De Montage
Assembly diagram / Schéma de montage 31 8865 31 8865 31 8559 Piaggio-Gilera 50 scooters Piaggio-Gilera 50 scooters manufactured up to 2000 / manufactured from 2001 / produites jusqu’au 2000 produites à partir du 2001 ORIGINAL / Art. 15 9489B D’ORIGINE -19-... - Page 20 TABLE 1 - Technical data / TABLEAU 1 - Données techniques 31 8403 39,2 49,26 16° 0,12 14,5:1 W31FS-ZU 31 8559 39,2 49,26 16° 0,12 0,70-0,75 15:01 W31FS-ZU 31 8565 39,2 49,26 16° 0,12 14,5:1 W31FS-ZU 31 8862 39,3 49,38 16°...