Komatsu 170-3 Series, Руководство по ремонту, Страница: 10 / 454

FOREWORD METHOD OF DISASSEMBLING, CONNECTING PUSH-PULL TYPE COUPLER
00-8
METHOD OF DISASSEMBLING, CONNECTING PUSH-PULL TYPE COUPLER
k
Before carrying out the following work, release
the residual pressure from the hydraulic tank.
For details, see TESTING AND ADJUSTING,
Releasing residual pressure from 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.
Disconnection
1) Release the residual pressure from the hydrau-
lic tan k. For details, see TESTING AND
ADJUSTING, Releasing residual pressure from
hydraulic tank.
2) Hold adapter (1) and push hose joint (2) into
mating adapter (3). (See Fig. 1)
!
The adapter can be pushed in about 3.5
mm.
!
Do not hold rubber cap portion (4).
3) After hose joint (2) is pushed into adapter (3),
press rubber cap portion (4) against (3) until it
clicks. (See Fig. 2)
4) Hold hose adapter (1) or hose (5) and pull it out.
(See Fig. 3)
!
Since some hydraulic oil flows out, prepare
an oil receiving container.
Connection
1) Hold hose adapter (1) or hose (5) and insert it in
mating adapter (3), aligning them with each
other. (See Fig. 4)
!
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. (See Fig. 5)
!
When the hose is pulled back, the rubber
cap portion moves toward the hose about
3.5 mm. This does not indicate abnormality,
however.
Type 1
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