The chain is replaced when it is stretched and removed when the engine is repaired.
To replace the chain, you need to remove the engine from the GAZelle NEXT car
To carry out the work, you will need keys: hexagons for 5, 6, socket heads for 10, 15 and a device for holding the master disk of the phase sensor from turning.
We remove the engine.
We install the piston of the first cylinder at the TDC of the compression stroke (article - Installing the TDC of the first cylinder Cummins ISF2.8).
We unscrew the five bolts securing the crankcase cover of the timing drive
Remove the cover
Remove the gasket. When installing, you need to replace the gasket
Unscrew the two bolts securing the chain tensioner cover
Remove the cover
We remove the hydraulic tensioner plunger
We fix the chain by tying with a wire
We loosen the tightening of the mounting bolt of the drive disc and the camshaft sprocket, keeping the shaft from turning.
We completely unscrew the bolt securing the master disk of the phase sensor and the camshaft sprocket
After unscrewing the bolt securing the master disk of the phase sensor and the camshaft sprocket, the crankshaft and the camshaft must not be rotated so as not to disturb the valve timing.
Removing the disc
Remove the sprocket with the chain from the camshaft shank
We remove the spacer washer so as not to lose it
We fix the timing chain on the engine together with an asterisk
We unscrew the two bolts securing the crankcase of the timing drive to the flywheel housing
An arrangement of bolts of fastening of a crankcase of a drive of a timing mechanism
Remove the clutch housing
We remove the flywheel (article - Removing and installing the flywheel of the Cummins ISF2.8 engine)
We unscrew the ten bolts securing the flywheel housing to the cylinder block.
The flywheel housing bolts differ in diameter and length, you need to remember their location. The flywheel housing weighs 23 kg, so you need to remove it with a second person.
Using a mallet or a rubber hammer, we pull the crankcase from its place and remove it together with the starter.
We unscrew the mounting bolts of the shoe "A" of the tensioner and the damper "B"
We remove the bolts and remove the shoe and damper.
We inspect the boot "A" of the tensioner and the damper "B", if there is strong wear, then we replace them
We remove the camshaft sprocket from the chain
Removing the chain from the intermediate gear sprocket, remove it from the engine
Install the chain and all parts in reverse order
Before installing the flywheel housing, make sure the two dowel sleeves are in place.
Apply heat-resistant sealant to the mating surface of the flywheel housing to the cylinder block.
Tighten the bolts in the sequence shown in the figure.
Tighten the M8 bolts with a torque of 24 Nm, and the M12 bolts with a torque of 85 Nm.
We check the correct valve timing.