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Doosan DX22 - Page 90

Doosan DX22
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5. General Engine Information
84
30. Hose and pipe
EDX22190075
1) Mount the pipe adapter and bracket and connect the fuel
delivery and return pipes.
2) Connect the low-pressure fuel pipes between fuel pumps
(A) and junction block (B).
31. Fuel filter
EDX22190133
1) Secure the bracket on the cylinder block and assemble
the fuel filter.
2) When replacing the fuel filter with a new one, make sure
to fill the cartridge inside with fuel before installing it.
32. Alternator
EDX22190065
1) Tighten the alternator bracket onto the cylinder block with
mounting bolts to assemble it.
2) Mount the alternator on the bracket and fasten it with the
lower bracket.
3) Mount the auto tensioner, connect the V-belt to the crank-
shaft, coolant pump, and alternator pulley; then, insert a
wrench into the tensioner pulley and turn it counterclock-
wise to mount the V-belt.
33. Idler pulley and belt
EDX22190135
1) Mount the idler pulley.
2) Connect the fan pulley, crank pulley, and idler pulley with
the V-belt.
3) Tighten tension adjustment bolt (A) of the idler pulley.
(Belt tension: 415 N/each, 3320 N/total)
Torque
Clamp torque (A)
1.2 kgf·m
(8.6796 lbf·ft)
Intercooler pipe
M10 (B)
6.2 kgf·m
(44.8447 lbf·ft)
Elbow pipe torque
M12 (C)
6.2 kgf·m
(44.8447 lbf·ft)
CAUTION
The seal rings installed in two places on assemblies no.
1 and no. 2 and assemblies no. 2 and no. 3 as described
above are a guide strap and O-ring.
Make sure that the guide strap and O-ring do not fall off
or get crushed.
A
B
C
Torque 4 kgf·m (28.9 lbf·ft)
A

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