Page 58 - CTS - Mechanic Diesel - TP
P. 58

MECHANIC DIESEL - CITS



           EXERCISE 2.17: Practice  on  removing  piston with

                                       connecting rod  assembly


            Objectives

           At the end of this exercise you shall be able to
           •  remove the big end bearing from the connecting rod
           •  remove the piston with connecting rod.

           Requirements

           Tools/Instruments                                   Materials/Components

           •  Trainee’s tool kit            - 1 No.            •  Tray                          - 1 No.
           •  Torque wrench, Ring expander   - 1 No each.      •  Cotton cloth                  - as reqd.
           •  Mallet, Drift punch           - 1 No.            •  Kerosene                      - as reqd.
           Equipments/Machines                                 •  Soap oil                      - as reqd.
                                                               •  Lube oil                      - as reqd.
           •  Multi cylinder diesel engine   - 1 No.           •  Wooden block                  - as reqd.


           Procedure

           Remove the piston connecting rod assembly
           •  Remove the oil sump.

           •   Disconnect the oil pipe from the oil pump and remove   Fig 1
              the oil strainer.
           •   Remove the oil pump.

           •   Tilt the engine block.
           •   Clean and check for ridge formation of all cylinders.
           •   Turn the crank shaft (4) till the piston (1) comes at
              B.D.C.
           •   Remove the bolts/nuts (9) of the connecting rod (2).
           •   Tap the connecting rod’s (2) cap with a mallet and
              remove the cap (6) along with the bearing shell (10)
              from the connecting rod.
           •   Turn the crank shaft (4) till the piston (1) comes at
              T.D.C.  Tap  the  connecting  rod  (2)  with  a  wooden
              block (3).                                             Fig 2
           •   Note  down  the  connecting  rod  cap  matching  number
              stamped on it to avoid mismatching while reassembling.

           •   Place the upper and lower bearing shell in their respective
              positions in the connecting rod and cap (6).   Fit the cap on
              the connecting rod. (Fig 1)
           •   Repeat the relevant steps to remove all the pistons. (Fig 2)
           •   Clean the connecting rod and pistons









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 CITS : Automotive - Mechanic Diesel  - Exercise 2.16
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