Page 266 - CTS - Mechanic Diesel - TP

MECHANIC DIESEL - CITS

Fig 22

Insert lever shaft through the holes in guide lever and tension lever and secure with new sealing plugs .
To ‘pre-tension the governor spring, screw in notch screw fully into swiveling lever and then screw out six full
turns (24 clicks).

Note: The notch screw works with ratchet effect one click after every one-fourth turn of the screw.
Governor cover
Apply a thin coating of rubber sealing compound to governor cover face and place the gasket in position.
Proceed as follows:
• Hook starting spring into fastening plate
• Push guide sleeve assembly into flyweightassembly.
• Connect the shackle (link member) to control rack and secure it with leaf spring.
Place governor cover on governor housing, loosely securing with fixing screws . Control rack should now be
checked for free movement, Push control rack to stop and release; control rackmust automatically return to ‘full
load position. Repeat this test several times. Finally tighten the screws to 5...7 N.m (0.5...0.7 kgf.m) torque.

Fix end cover . Fix supplementary idling spring , adjusting screw , washer , hexagonal nut and secure with capnut.
Provisionally screw in stop or idling screw (9/14). Fix lock-nut (9/15) with washers (9/13) and capnut.
Screw the closing plug into governor housing. If air breather is provided, screw it into its reducing nipple. Fix
the speed control device wherever provided, with screws. If maximum speed stop screw was unscrewed, fit in
provisionally and secure with lock-nut . Remove tappet holders from the pump. Pour fresh engine oil into pump
camboxupto the mark. The governor is now ready for testing.
Testing of RSV governor
Setting of fuel injection pump without governor action
Mount pump assembled with governor, on fuelinjection pump test bench using suitable mounting brackets/clamps
Remove governor cover assembly

• Setting the pre-stroke (port closing)
Adjustment “A size pumps by adjusting the roller tappet adjusting screws or by varying the thickness of shims
‘P’ size pumps-by varying the thickness of shims under the element-delivery valve assembly flange.
• Cam sequence

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CITS : Automotive - Mechanic Diesel - Exercise 15.3