Nilfisk-Advance MC 6P Service Manual page 41

Pic. F.11: Header ring
Assemble header ring in right position. Knob on
header ring must be placed in groove in cylin-
derhead. Drop —do not knock it into the right
position.
Cylinder head bolts
IMPORTANT:
Cylinder head bolt Torque:
Step 1: Tighten bolt 1-8 with 20 Nm
Step 2: Tighten bolt 1-8 with 30 Nm
Step 3: Re-tighten ALL bolts with 30 Nm
SM_MC_6P Ver.2.0_2021
Service / Repair
Pic. F12: Header ring
If the header ring is mounted wrongly and not
according to instruction, there is a big risk of
damaging the header ring and parts of it will
block pistons and valves in the pump or get
stucked in the non return valve in the unloader.
IMPORTANT:
Cylinder head bolt Torque:
Bolts must be tightened in a criss-cross
sequence.
(Bolts are marked with number 1-8 in the
pump head).
F
Pump valves
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