It is recommended to disassemble the engine in the following order:
We install the engine on a stand or stand. We prepare the necessary tools for disassembly.
When disassembling, you need to mark the parts that will be used in the future.
The crankshaft, flywheel and clutch are balanced as an assembly, so they cannot be disassembled.
Using a 10mm socket, unscrew the six bolts securing the cylinder block cover and remove the cover together with the gasket.
Remove the oil dipstick
Using a 12mm wrench, loosen the bolt on the top mounting of the generator
Using a 13mm wrench, unscrew the nut securing the adjusting plate to the block head
Remove the plate from the block head stud
Use a 13mm wrench to unscrew the two nuts securing the outer struts securing the rocker axle
Using a 17mm wrench, evenly loosen and unscrew the four nuts securing the main struts of the rocker axle
Remove the rocker arm axle from the studs
We take out the eight push rods and arrange them in order so that we can put them in their places later
Remove the ends of the high-voltage wires and turn out the spark plugs.
Disconnect the hose from the fine fuel filter.
Disconnect the vacuum corrector hose of the ignition distributor sensor from the carburetor.
Using a 19mm socket, unscrew the ten nuts securing the block head in the reverse tightening sequence
Remove the head from the cylinder block studs.
Remove the cylinder head gasket
Turn the engine over with the sump facing up and use a 13mm wrench to unscrew the eighteen nuts securing the sump.
There are shaped washers installed under the corner nuts for securing the pallet
Remove the front and back parts of the gasket from the pallet
Remove the side parts of the gasket from the block
Sealing gaskets cannot be reused. All gaskets are sold sets.
Using a 12mm socket with an extension, unscrew the two bolts securing the fuel pump
Removing the fuel pump
A gasket is installed between the pump and the block
Use a 24mm wrench to unscrew the bolt and disconnect the tube from the oil filter housing
Using a 13mm wrench, unscrew the four nuts securing the oil filter
Remove the oil filter
Using a 14mm wrench, unscrew the six nuts and two bolts securing the clutch housing
Removing the clutch housing
Use a 24mm wrench to unscrew and remove the oil radiator valve and oil pipe
Using a 12mm wrench, unscrew the fitting and remove the oil level indicator tube
Remove the timing gear cover to do this:
Use a 46 socket wrench to unscrew the ratchet
Use a 12mm socket to unscrew the six pulley mounting bolts
Remove the crankshaft pulley
Use a three-fingered puller to tighten the pulley hub
Using a 13mm wrench, unscrew the eight nuts securing the front cover
Remove the timing gear cover
Using a 13mm wrench, unscrew the two nuts securing the pusher box cover.
Remove the pusher cover
We take out the eight valve tappets and mark them or arrange them in order
Using a bit, knock out the key
Remove the oil deflector from the crankshaft
Using a 12mm socket through the hole in the gear, unscrew the bolts securing the thrust flange
Remove the camshaft together with the gear
Secure the sleeves from falling out using suitable bushings, washers and nuts
If the cylinder liners are not secured, then when the crankshaft is rotated, they may rise due to friction against their piston mirrors.
Scale particles from the water jacket will get under the seating collars of the liners, and when assembling the engine, the liners will not fit tightly into place, which will lead to coolant leaking into the oil sump.
Turn over the cylinder block.
Using a 13mm socket, unscrew the two nuts securing the oil pump
Removing the oil pump
Use an 8mm hex to unscrew the two nuts securing the oil seal holder
Remove the rear bearing oil seal holder
Using a 15mm socket, unscrew the two nuts of the connecting rod cover
Remove the connecting rod cover
Use the wooden handle of a hammer to press the piston out of the cylinder.
We also remove the remaining pistons.
Using a 19. socket, unscrew the two nuts securing the main bearing cap
Remove the main bearing cap.
We also remove the remaining main bearing caps.
Remove the crankshaft from the block
Unscrew the device holding the cartridges and take them out.
Marking the cartridges
After this, we wash all the parts and prepare them for fault detection