Threaded connection / Tightening torque Nm (kgf m)

Main bearing cap bolts:

  • Vertical 430–470 (43–47)
  • Horizontal 100–120 (10–12)

Crankshaft hub mounting bolt 431–490 (44–50)

Bolts for securing connecting rod covers 200–220 (20–22)

Flywheel housing mounting bolts 100–125 (10–12.5)

Flywheel mounting bolts:

  • with locking plates for two bolts 200–220 (20–22)
  • with a plate for all bolts 235–255 (24–26)

Bolts for fastening the front engine mount bracket 90–110 (9–11)

Bots for fastening the upper cover of the cylinder block 25–32 (2.5–3.2)

Nuts of studs securing cylinder heads 240–260 (24–26)

Nuts securing rocker arm axles 120–150 (12–15)

Starter bracket bolt 70–90 (7–9)

Starter bracket mounting bolts 45–62 (4.5–6.2)

Nuts of injector mounting brackets 50–62 (5–6.2)

Injection advance clutch fastening nut 130–150 (13–15)

High pressure fuel pump fittings 100–120 (10–12)

Injector nozzle nuts 60–80 (6–8)

Nozzle fitting 8–10 (8–10)

Camshaft gear nut 270–300 (27–30)

Nut securing the driven gear of the fuel pump drive 140–180 (14–18)

Threaded connections of the high pressure fuel pump drive coupling:

  • bolts securing the plates to the driven coupling half 32–40 (3.2–4)
  • others 44–60 (4.4–6.0)

Nut of the pulley axis of the tension device of the pneumatic compressor drive 120–150 (12–15)

Nut of the tensioner bolt of the compressor drive tensioner 10–20 (1–2)

Nuts of rocker arm adjusting screws 44–56 (4.4–5.6)

Oil pump mounting bolts 90–100 (9–10)

Oil sump drain plug 140–160 (14–16)

High pressure fuel pump mounting bolts 28–36 (2.8–3.6)

Nuts of high pressure fuel lines 18–25 (1.8–2.5)

Turbocharger mounting bolts 36–44 (3.6–4.4)

Exhaust manifold mounting bolts 36–44 (3.6–4.4)

Low pressure fuel pipe mounting bolts:

  • M10 = 20–25 (2–2.5)
  • M14 = 40–50 (4–5)
  • M16 = 48–50 (4.8–6)

Bolts securing the clutch housing to the gearbox housing 137–157 (14–16)* / 216–245 (22–25)**

Bolts securing the clutch housing to the flywheel housing: M12 = 70–80 (7–8)

Bolts securing the spacer to the main box housing 123–157 (12.5–16)

Bolts securing the range housing to the spacer:

  • pre-tightening 20–30 (2–3)
  • final tightening 79–98 (8–10)

Bolts for securing the upper crankcase cover of the main box 35–49 (3.6–5)* / 49–54 (5.0–5.5)**

Axes of range shift fork 118–128 (12–13)

Input shaft cover mounting bolts 23.5–35 (2.4–3.6)

Bolts securing the low range gear coupling to the spacer 49–55 (5–5.6)

Output shaft flange mounting bolt 431–490 (44–50)

Note:

* - for gearboxes of the YaMZ-238VM and YaMZ-2381 types;

** - for gearboxes of the YaMZ-239 type.

new

During operation, it may be necessary to adjust the full opening of the carburetor throttle valve and the position of the pedal

- Cause of malfunction Elimination method The clutch does not disengage completely (the clutch “drives”):