REPAIR valve gear. Removal and installation of valves
Removing the valve is made after the head
cylinder is removed from the engine. Disassembly operations head
cylinders is carried out in the following sequence:
- Tighten the cylinder head in a vise;
- Loosen the screws holding the flange thrust distribution
shaft and remove the flange;
- Raskontrite rocker adjusting screws and remove
them so that the spherical ends were recessed into the threaded
holes and remove the valve stem tip;
- With the rocker arm shaft mandrel knock out holes in the
the cylinder head and rocker anime, springs and axles
spacers (see "Disassembly axes rocker arms");
- Remove the fuel pump drive shaft and a distribution
shaft bearings in the cylinder head;
- On the plate of each valve mark the serial number
- With a special puller (Fig. 31) compress the spring
valve to be disassembled. To do this, a bracket
puller set with respect to the head, so that
ring emphasis was on top of two plates of the spring
valve. When you turn the lever 5 from the position I in the
position II kulachek clicks on the bar 4, which moves
a bracket and thereby squeezes the two valve springs.
When the spring compressed, remove the crumbs from the valve stem.
Weakening the pressure on the lever puller, release the valve spring.
Next, remove the puller and remove the spring,
valve plate and valve protective cover and then remove
Valve guide bushing. Similarly, remove the
and all other valves.
Install valves in reverse order,
at the same time check the condition and the wear bars
valves and guides, valve job facets,
seat and valve springs. Each time the cylinder head assembly
with the valves after repair or after grinding valves,
Dish washers valve springs required
replace with new ones, regardless of the state.
This change is necessary in order to avoid possible leakage
oil through the washers, as from time to time material
washers hardens and loses its elasticity,
necessary to create a seal. When repair parts
the valve mechanism must be borne in mind that the valves
Spare parts are available only to the nominal size.
Therefore, in the past worn valve stem to replace the
new ones. Repairing the valve stem through pereshlifovaniya
on the smaller size is impractical because it requires
replacement guides in the head and use croutons
oversize. When installing the valve rods are required
Grease graphite grease.