Doosan DX60R Shop Manual page 651

Hint for Disassembly and Assembly of Main Relief Valve
Figure 4
1. Disassembly
For the original product, replace assembly.
When replacing,
subtense24) with a spanner, etc and take off the O-ring (2,
Figure 4).
If oil leaks from the adjuster part (3, Figure 4), loosen the
adjuster part and replace the O-ring (4, Figure 4).
In disassembling disassembly the adjuster kits, be
cautious so that poppet may not be lost by which parts
are popped up by spring.
2. Assembly
Properly check that there are no scraps, primer pieces,
etc around cap (1, Figure 4) screw part. and insert a new
O-ring (2, Figure 4).
After properly cleaning the relief mounting part of the
valve housing, mount the relief valve and then tighten cam
(1, Figure 4) <1: hexagon subtense 24> to tightening
torque of 69~78N•m. If disassembling the adjuster kits,
properly clean around the screw part and adjust pressure
according to "Hint for Disassembly and Assembly of
Overload Relief Valve" on page 1-21).
All tightening torques as directed above are wet status
(working oil adherence status).
Main Control Valve
loosen the cap (1:
CAUTION
CAUTION
hexagonal
SP001639
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