Yaroslavl Engine Plant YMZ-536, Руководство по эксплуатации

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160
Tightening needed
Fixing elements
Preliminary
tightening torque,
Nm (kgf m)
Final tightening
to angle in
degrees or torque
in Nm (kgf m)
Timing mechanism
Bolts fixing rocker arm shaft
and supports
Tightening is performed in three
steps:
1.
Preliminary tighten (2–3
revolutions)
2. Start in the middle,
successively moving toward
both sides, tighten to torque of
20–30 Nm (2.0–3.0 kgf·m).
3. Starting from the left end,
successively move to right and
tighten additionally to torque
73.54 ± 4.9 (7.4 ± 0.5)
Rocker arm adjusting nuts 50 – 55 (5.0 – 5.5)
Fuel equipment fixing
Fuel pump drive gear nut 195 ± 5 (19.5 ± 0.5)
High pressure injection pump 50 – 55 (5.0 – 5.5)
Rail securing bolts 45 ± 2 (4.5 ± 0.2)
Bolts fixing injector brackets
in the cylinder head
16 ± 1 (1.6 ± 0.1) 95º± 2
Nuts attaching the injector’s
union to the cylinder head
5 (0.5) 55 ± 1 (5.5 ± 0.1)
Nuts attaching the fuel pipes
to the rail and to the injector
union 25 + 8 (2.5 + 0.8)
Tighten to maximum torque
in case of fuel leakage
Fine fuel filter fixing bolts 22 – 25 (2.2 – 2.5)
E.C.U. securing bolts 8 – 10 (0.8 – 1.0)
Cylinder head cover to oil sump fixing
Cylinder head cover fixing
bolts
8 – 10 (0.8 – 1.0)