Doosan 12/154, Operation & Maintenance Manual

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MAINTENANCE 71
12/154
Screw in the hexagonal nuts (19) and (20) and adjust them in
accordance with regulation SK70008 . Mount on the top middle part.
Using gentle hammer impacts, put the pin (12) through the drawbar
and the top middle part. Secure the pin (12) with the seal ring (9), disc
(10) and the bolt (11). Spread the bolt (11) with liquid high strength
thread locker and fasten it with a tightening moment of 20 ± 2Nm. Set
the handbrake lever into its non-braking position and check the
adjustment of the KHD braking system
in accordance with regulation
SK70008 once more. Do additional adjustments if necessary. Put on
shields (15) and (14) and secure them with blind rivets (13). Plug in the
adaptor (7) and the winding handle (5). Secure the winding handle (5)
with the pin (6). Put the coupling unit into the highest position and
adjust the whole braking system (KHD + axles).
Replacement of the coupling head or the spring pack
To be carried out ONLY by skilled service personnel.
Disassembly
Loosen the balance bar (58, tandem) or (59, single axle) so that the
handbrake lever can be moved down. Undo the SL-clips (63) and pull
out the pin (62). Replace the damaged spring pack.
Assembly
Mount the new spring pack onto the spring pack bracket (60) and
secure it with the SL-clip (63). Mount the spring pack (61) with the
handbrake lever, insert the pin (62) and secure with the SL-clip (63).
Set up the whole braking system according to general KNOTT
regulation.