Page 65 - CTS - Mechanic Diesel - TP

MECHANIC DIESEL - CITS

EXERCISE 2.21: Overhauling of crankshaft

Objectives

At the end of this exercise you shall be able to
• use of service manual
• check the clearance of crankshaft.

Requirements

Tools/Instruments Equipments/Machines
• Trainee’s tools kit - 1 No. • Work bench - 1 No.
• Engine manual book - 1 No. • Multi cylinder engine - 1 No.
• Soft harmer - plastic - 1 No. Materials/Components
• Pry bar - 1 No.
• Feeler gauge - 1 No. • Tray - 1 No.
• Plastic gauge - 1 No. • Banian cloth - as reqd.
• Torque wrench - 1 No. • Soap oil - as reqd.
• Dial gauge - 1 No. • Lube oil - as reqd.
• Inside micro meter - 1 No. • Shell bearing - as reqd.

Procedure

• Remove the bearing cap bolt (10). (Fig 1)

• Remove the bearing caps (8).

Note: The crankshaft bearing caps are marked with stamped numbers. Remove the bearing cap
from the vibration damper side.

• Remove the crankshaft bearing caps (9) and lower thrust bearings (7).
• Remove the lower bearing shell (6) from the bearing cap (9). (Fig 2)

Fig 1 Fig 2

• Remove the crankshaft (5). (Fig 3)
• Remove the upper thrust bearings (4). (Fig 4)
• Remove the upper bearings shells (3) from crankcase.
• Thoroughly clean the oil gallery.

48