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Summary of Contents for Harford Attachments Pro-lok
- Page 1 MECHANICAL QUICK HITCH Installation & Operation Manual Important: This manual must be kept with the excavator at all times and referred to as required Harford Attachments Ltd...
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Page 2: Table Of Contents
The lifting eye test certificate is only supplied if a lifting eye is fitted to the quick hitch at manufacture. If at any time in the future, you require additional information on the HARFORD PRO-LOK quick hitch or any aspects of its use, please do not hesitate to contact: Harford Attachments Ltd Spar Road, Norwich. NR6 6BY. England Tel +44 (0) 1603 403099 Fax +44 (0) 1603 402399 email: info@harfordattachments.co.uk... -
Page 3: Introduction
This manual contains the installation and operation instructions for the mechanical Harford Pro-Lok quick hitch. If the quick hitch you are about to fit or operate is not the Pro-Lok, please refer to the separate manual. -
Page 4: Fitting The Quick Hitch To The Excavator
Fitting the quick hitch to the excavator SAFETY NOTICE: It is recommended that safety gloves are worn during the installation of the quick hitch. 1. Remove any existing attachment from the machine dipper arm and crowd link arm. The two original pins that are removed from these pivot points must be used to attach the quick hitch to the excavator (These pins are usually hardened and greasable). -
Page 5: Connecting An Attachment
Connecting an attachment SAFETY NOTICE: It is recommended that safety gloves are worn during the attachment changeover operation. 1. Lower the quick hitch front ‘C’ shaped jaw down towards the front attachment pin as shown in diagram 2, step 1. 2. - Page 6 Diagram 3 Correct operating position Diagram 4 Incorrect operating position Diagram 5 Releasing an attachment position PLM/MAN15/Rev 3B...
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Page 7: Releasing An Attachment
WARNING: During operation there should be no movement between the quick hitch and attachment. If any movement is detected, stop operation immediately, lower attachment to the ground and inspect the hitch. WARNING The quick hitch extends the length of the dipper arm and some attachments may hit the cab or boom in certain positions. -
Page 8: Adjusting The Threaded Actuator
The rotational resistance of the threaded actuator must be firm at all times. This is a safety feature that further enhances the positive locking mechanism built into the Harford Pro-Lok mechanical quick hitch. This resistance can easily be adjusted using standard tools. -
Page 9: Harford Attachments Ltd
7. Check quick hitch for evidence of fatigue, weld failure or stress. WARNING: If the hitch should be damaged in any way and there is any doubt as to the continued safety of the product please contact Harford Attachments Ltd, Technical Department on +44 (0) 1603 403099. Warranty Harford Attachments Ltd (the seller) warrants their quick hitches as follows: 1.
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