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Installed Mitsubishi S6R diesel engine crankshaft


Detailed Description:

Installed Mitsubishi S6R diesel engine crankshaft

1.6 Install the front thrust plate (top)

(1) Push the crankshaft of the installed Mitsubishi S6R diesel engine toward the front side of the engine, and make the end face of the crankshaft neck of the Mitsubishi S6R diesel engine and the rear thrust plate (top) installed lightly contact.

(2) The oil groove of the front thrust plate (top) faces the front side of the engine. Insert the front thrust plate (top) between the gap between the crankshaft of the Mitsubishi S6R diesel engine and the crankcase of the Mitsubishi S6R diesel engine.

(3) Move the crankshaft of the Mitsubishi S6R diesel engine back and forth to confirm that there is proper clearance.

Install front thrust plate (top)

1.7 Install Mitsubishi S6R Diesel Engine Main Bearing Pad Lower Bearing Pad, Thrust Pad (bottom)

(1) Mitsubishi S6R diesel engine main bearing pad under bearing shell and Mitsubishi S6R diesel engine main bearing pad end cover are aligned and installed.

Note: The amount of protrusion at both ends of the bearing pads remains uniform.

(2) Evenly lubricate the inner surface of the lower bearing shell of each Mitsubishi S6R diesel engine bearing shell.

(3) Install the thrust piece at the position of the pin on the end cover of the main bearing pad of Mitsubishi S6R diesel engine (bottom).

Note: The oil grooves of the thrust piece (lower) are installed toward the outside of the end cover, respectively.

Install Mitsubishi S6R diesel engine main bearing pad, lower bearing pad, thrust plate (bottom)

Install thrust piece (below)

1.8 Installing Mitsubishi S6R Diesel Engine Main Bearing Pad End Cover

(1) Confirm that the main bearing pads and thrust plates installed on the main bearing pad end caps of the Mitsubishi S6R diesel engine are evenly coated with clean lubricant.

(2) At the time of installation, the engraved numbers on the end cover of the main bearing pad of Mitsubishi S6R diesel engine are in the order of the front side of the engine, and the side of the engraved “FRONT” mark on the front side of the engine faces the front side of the engine. All on the same side).

(3) Mitsubishi S6R diesel engine main bearing pad end cap bolts and washers are temporarily installed after being lubricated.

(4) Use a soft metal hammer to evenly drive the end cover of the main bearing pad of the Mitsubishi S6R diesel engine.

Install Mitsubishi S6R diesel engine main bearing pad end cap

(5) Mitsubishi S6R diesel engine excluding the rear end of the crankshaft end cap bolts of Mitsubishi S6R diesel engine main bearing pads are tightened in the order shown in the figure at 1/2 of the specified torque.

(6) Mitsubishi S6R diesel engine main bearing pad end cap bolts other than the last end of the Mitsubishi S6R diesel engine crankshaft are tightened in accordance with the sequence shown in the figure and with the specified torque.

(7) The Mitsubishi S6R diesel engine main bearing pad end cover at the rear end of the crankshaft of the Mitsubishi S6R diesel engine is temporarily installed with a degree of light contact.

In this state, measure the axial clearance of the crankshaft of the Mitsubishi S6R diesel engine.

Tightening sequence of Mitsubishi S6R diesel engine main bearing pad end cap bolts

1.9 Measure the axial clearance of the crankshaft of Mitsubishi S6R diesel engine

(1) Confirm that the crankshaft of the Mitsubishi S6R diesel engine can be easily cranked.

(2) Install the dial indicator and touch the meter head to the rear end face of the crankshaft of Mitsubishi S6R diesel engine.

(3) Use a spudger to move the crankshaft of the Mitsubishi S6R diesel engine, measure the maximum difference between the forward and backward movement of the crankshaft of the Mitsubishi S6R diesel engine, and detect the axial clearance value. When it exceeds the standard value, the thrust plate and the Mitsubishi S6R diesel engine crankshaft are detected. When the value is within the standard value, the Mitsubishi S6R diesel engine crankshaft is moved forward and backward in the state where the end cap bolt of the main bearing pad of the Mitsubishi S6R diesel engine at the end is loosened, and the test is performed again.

(4) After the end cap of the main bearing pad of the Mitsubishi S6R diesel engine at the rear end is officially tightened, the axial clearance is measured and confirmed again.

(5) Reconfirm that the crankshaft of Mitsubishi S6R diesel engine can be easily cranked.

(6) Reconfirm that all Mitsubishi S6R diesel engine main bearing pad end cap bolts have not been tightly tightened.

The following figure shows the axial clearance detection items and technical specifications of the crankshaft of Mitsubishi S6R diesel engine.

Measure axial clearance of crankshaft of Mitsubishi S6R diesel engine

1.10 Mitsubishi S6R Diesel Engine Crankcase

Place the Mitsubishi S6R diesel engine crankcase on the turntable and turn it over. When not using a turntable, hang a wire rope on the crankcase of the Mitsubishi S6R diesel engine, and fill in pads or cloth between the wire rope and the crankcase of the Mitsubishi S6R diesel engine. Lift it up and place it on the sleepers. Re-hang the wire rope, turn the Mitsubishi S6R diesel engine Mitsubishi S6R diesel engine crankcase on the sleepers to restore the normal placement state.

Crankcase for Mitsubishi S6R Diesel Engine

2. Mitsubishi S6R diesel engine cylinder liner, Mitsubishi S6R diesel engine piston, Mitsubishi S6R diesel engine connecting rod assembly

2.1 Detecting the height of the cylinder liner flange of Mitsubishi S6R diesel engine

(1) The dial gauge head is in contact with the upper end of the shoulder of the cylinder liner of Mitsubishi S6R diesel engine. Adjust the dial gauge pointer to zero.

(2) Measure the height of the Mitsubishi S6R diesel engine cylinder flange at four positions.

(3) When the measured value is not within the range of the reference value, or the flange part is broken, replace with a new Mitsubishi S6R diesel engine cylinder liner.

Test items

standard value

Mitsubishi S6R diesel engine cylinder flange height

0.16 to 0.24 mm

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