Page 273 - CTS - Mechanic Diesel - TP

MECHANIC DIESEL - CITS

Mount injection pump assembled with governor on swiveling vice (Fig 2) with suitable mounting flange and
adapter ring.
Auxiliary idling spring/damping valve
• MZ type earlier design

Fig 2

Remove screws and take out cap together with guide bush adjusting screw and other components (. Pressure
spring and stop pin from the governor cover. Where necessary, remove guide bush screw and other components
• MZ type simplified design
Loosen the hexagonal nut and screw out the spring stopper assembly
• MZ type modified design (with cam operated spring stopper).
Remove the two screws along with washers . In the earlier design where countersunk screws are used, carefully
remove the aluminium washers with a sharp tool taking care not to damage the countersunk surface. Remove
end cover and gasket . Pull out the sliding spring stopper .

Fig 3

Remove screw along with spring washer . In the new design where hexagonal head screw is used, an additional
plain washer is used. Remove control lever , spring and bush . Remove washer from this side. Take out the split
pin and remove washers . Remove ‘O’ rings .
• MV type with damping valve
Loosen the nut with an open end spanner and unscrew the damping valve assembly (Fig 3). Unscrew valve
retainer and remove valve cone , spring and compensating washer .
Remove governor cover by unscrewing Screws (Fig 4). Remove governor spring .

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CITS : Automotive - Mechanic Diesel - Exercise 15.4