Method Of Disassembling And Connecting Push-Pull Type Coupler - Komatsu ecot3 WA500-6 Shop Manual

Method of disassembling and connecting push-pull type coupler

Method of disassembling and connecting push-pull type coupler
k
Before carrying out the following work, loosen the oil filler cap of the hydraulic tank gradually to
release the residual pressure from the hydraulic tank.
k
Even if the residual pressure is released from the hydraulic tank, some hydraulic oil flows out
when the hose is disconnected. Accordingly, prepare an oil receiving container.
Type 1
1. Disconnection
1) Hold adapter (1) and push hose joint (2)
into mating adapter (3). (Fig. 1)
a The adapter can be pushed in about
3.5 mm.
a Do not hold rubber cap portion (4).
2) After hose joint (2) is pushed into adapter
(3), press rubber cap portion (4) against
adapter (3) until it clicks. (Fig. 2)
3) Hold hose adapter (1) or hose (5) and pull
it out. (Fig. 3)
a Since some hydraulic oil flows out,
prepare an oil receiving container.
2. Connection
1) Hold hose adapter (1) or hose (5) and
insert it in mating adapter (3), aligning
them with each other. (Fig. 4)
a Do not hold rubber cap portion (4).
2) After inserting the hose in the mating
adapter perfectly, pull it back to check its
connecting condition. (Fig. 5)
a When the hose is pulled back, the
rubber cap portion moves toward the
hose about 3.5 mm. This does not
indicate abnormality, however.
WA500-6
SEN00702-05
1
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