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©2022 Harford Attachments Ltd
PROLOK/GEN/MAN/R4
WARNING:
During operation there should be
no movement
between the
Pro-Lok
hitch and any attachment.
If movement is detected, stop operation immediately, lower the attachment to the ground and
inspect the hitch.
WARNING
:
The
Pro-Lok
extends the length of the dipper arm and some attachments may hit the cab or
boom in certain positions as a result.
WARNING
:
The
Pro-Lok
is designed to pick up attachments manufactured to OEM specifications and
capacities only. Use of oversized attachments with this quick hitch can be hazardous and may
invalidate the product warranty should damage occur.
WARNING
:
Ensure the Safe Working Load of the excavator is not exceeded - check the excavator
manufacturer
’s information.
IMPORTANT:
To prevent unnecessary wear and tear, we recommend that the
Pro-Lok
hitch is removed if
hydraulic hammers are to be used on the excavator for long periods of time.
IMPORTANT:
The use of pallet forks with the
Pro-Lok
is not recommended, in order to maintain the integrity of
the product design. Mis-use, resulting in damage to the hitch could invalidate the product
warranty.
Releasing an Attachment
1. When releasing an attachment, first ensure people and property are well clear of the area of
operation. Place the attachment on level ground or in a position so that once released the attachment
cannot roll away from the hitch.
2. Use the ratchet spanner to rotate the threaded actuator in an anti-clockwise direction until the rear
wedge plate is fully retracted and front lock fully open as shown in Diagram 5.
3. Using the crowd cylinder of the excavator, rotate the quick hitch away from the rear pin of the
attachment then lift away from the front attachment pin.
Lifting a Load
IMPORTANT:
This section only applies to quick hitches that are supplied with a factory fitted and certified lifting
eye.
WARNING
:
If your Pro-Lok hitch was not supplied with a factory fitted and certified lifting eye you must not
attempt to lift loads that are not wholly contained within a bucket-type attachment, it is unsafe,
may lead to damage and will invalidate the warranty.
IMPORTANT:
Ensure the safe lifting capacity of the excavator is not exceeded. Refer to excavator
manufacturer’s information.
1. Ensure that the load to be lifted does not exceed the safe working load of the lifting eye.
2. The lifting eye is designed to be used with a lifting shackle with the same safe working load rating.
