LAND ROVER 2.5 TD Cylinder Head Installation

The cylinder head is taken from the specialist where it has been repaired. Because of one valve seat that broke all the head was examined for damage. Hot plugs closely inspected for possible cracks. All valves, their guides and oil seals were renewed.

The turbo diesel engine powered truck (with 170 000 miles covered) was driven on a fairly long hilltop during extreme summer heat.
Due to blocked thermostat for cooling, a rupture of rubber tubing and coolant leakage occurred.
The engine has overheated. By a slight increase in the engine noise the damage was to be expected.
The truck arrived home 200 kilometers away with frequent water refilling into the cooling system.
The first valve seat broke so the pieces of exceptionally hard material from which it is made,
hit the soft top surface of the piston and damaged it even on two adjacent pistons in the engine.They have been carefully extracted. The pistons are not drilled through.The cylinders had no signs of significant damage. Similar signs on the head couldn't be removed completely even by alignment using special machine.
Here it is how we refitted the repaired cylinder head back and assembled all the rest needed.
Finaly, the oil feed pipe, for the lubrication of the rocker shaft assembly, to the cylinder head is conected as well as the heater plugs and all leads, washers and nuts fitted back ensuring that each cable eyelet is fitted vertically downwards to prevent heat from the cylinder head damaging the cable insulation. Fuel injectors fitted with new steel sealing washers bellow the nozzles that prevent overheating. Using new gaskets the air intake and exhaust manifold are tightened into place. Breather hose conected to the oil filler cap as well. Air intake and coolant hoses refitted, coolant refilled, battery reconected.The engine started successfully even without venting of the fuel supply system.

HRVATSKI PRIJEVOD: Na autu (sa peđenih 170 000 milja) u vožnji tijekom jednog prilično dugog uspona
za vrijeme ekstremne ljetne vrućine ... zbog blokiranog termostata za hlađenje
došlo je do puknuća gumenih cijevi i curenja rasladne tekućine.
Vjerojatno iz toga razloga pregrijan je motor i došlo je do pucanja sjedišta prvog ventila.
Komadići iznimno tvrdog materijala od čega je napravljeno, zabijeni su u mekani gornji sloj aluminjijskog klipa i oštetili gornju površinu čak i susjedna dva klipa u motoru.
Iznimno pažljivo su izvađeni pa su tragovi ostali no klip nije probušen.
Stjenke cilindara nisu značajno oštećene.Oštećenja na glavi nisu se mogla sasvim ukloniti strojnim poravnavanjem. Ugradnju sjedišta ventila, novih ventila, vodilica i gumica te strojnu obradu i obrada ventila povjereni su mehaničkoj radionici.. Ugradnju glave nazad na motor u automobilu izvršili smo sami upravo kako je opisano u ovom filmu. (P.Balenović)

Видео LAND ROVER 2.5 TD Cylinder Head Installation канала Pavle Balenovic