TROUBLESHOOTING
H-22
H-22 Steering does not turn easily or lacks power
j, Carry out troubleshooting in the H/O mode.
2
I I
Is it difficult to turn
YES to both left and
- right, or is it difficult 8
to turn in one
direction only?
1
Is travel oil pressure
switch normal?
l See JUDGEMENT
TABLE
l Note:
If auto-deceleration
is canceled when
travel is operated,
system is normal
k
-Difficult to
turn to both
left and right
when relieved on
Pressure high only on
side not being relieved
1
4 YES
p$;;pqj~H-
- Min. 2.74 MPa
NO
(Min. 28 kg/cm’)
- Engine at high idling
* Set swing priority mode ON
Pressure high only on side being relieved
(oil pressure is normal)
1
[Both left and right high]
‘Neither fron:
nor rear
reach relief
pressure
I
I
* Interchacye left and
right spools.
YE
l 34.8 :::: MPa
(355 ::: kg/cm?
* Engine at high
idling
l Arm IN relief
Does not
c
[ 1
turn to left -
or right
t
-
IO
3
20-230
a
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