48Z-1, 51R-1, 55Z-1, 57C-1 13
Hydraulic Hitch Unlock Sequence
1
4
4a
2
5
4b
3
6
Start Unlock Process
Remove Attachment
Crowd Override
Confirm Process
Change Attachment
Remove Attachment
Boom LED Indicator
Lock Quick Hitch
To start quick hitch unlock
process ensure hydraulics are
live then press quick hitch
sequence button (A).
For large attachments where
crowding is not possible
press & hold rotary dial (A)
for 5 seconds.
To disengage the pivot pin
operate use the dozer lift lever
(A) until the hitch unlocks then
remove attachment.
Operate the machine to
engage
the jaw (A) with the
attachment
(B) and then full
crowd the attachment
to align latch.
To disengage the pivot pin,
crowd attachment for 3 seconds
then remove attachment.
To engage the lock on the quick
hitch press one of the following
two buttons and visually check
hitch is locked.
Instrument panel will indicate
need to confirm process (A).
To confirm process press 2 GO
button (B).
When the sequence is
confirmed the LED on the
boom will flash red (A).
A
A
A
B
B
A
Specialised attachments are any
attachment that when crowded
fully could foul doom/dipper.
When using a specialised
attachment that requires this
process to be followed, replace
No.4 above with No.4 a & b
then continue to follow steps 5
and 6 to finish.
Specialised Attachments
A
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