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©2022 Harford Attachments Ltd

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

PROLOK/GEN/MAN/R4 

 

Guide to Safety Symbols 

 

 

 
SAFETY NOTICE: 

These indicate specific precautions and recommended personal protective 
equipment (PPE) for use during the given situations. 

 

 
IMPORTANT: 

Specific points to note and situations to be aware of. 

 

 
IMPORTANT: 

Prohibited situations are specified and should be avoided. 

 

 
WARNING: 

Situations of danger in which the operator or installer must pay particular 
attention to the information provided to minimise the risk of injury to self or 
others 

 
 

General Safety Information 

 
 

 

IMPORTANT

Due to the weight of the product, handling of the hitch prior to installation should be 
done using appropriate lifting aids for the weight, which can be found on the punched 
information plate affixed to the side of the hitch. 

 

IMPORTANT

Ensures that the machine to which the Pro-Lok quick hitch is installed does not 
exceed its safe working load (SWL), taking into account the additional weight of the 
hitch, which is stated on the punched information plate affixed to the side of the hitch. 

 

IMPORTANT

:  

Be aware that the addition of the Pro-Lok quick hitch will increase the reach distance 
of the excavator arm, which may cause it to impact nearby objects and people or to 
impact the operators cab, leading potentially to property damage, injury, loss of limb 

or fatal injury.  

 

IMPORTANT

It is recommended for safety reasons that the machine to which this Pro-Lok quick 
hitch is installed is operated by an experienced, competent person, trained to ISO 
7130:2013 or later. 

 

IMPORTANT:  

If hammers are to be used for long periods of time the quick hitch should be removed 
to prevent unnecessary wear. 

 

IMPORTANT:  

During installation, no alterations must be undertaken to any protective structure 
(e.g., rollover protective structures (ROPS), tip-over protective structures (TOPS), or 

falling object protective structures (FOPS) are permitted except where authorised by 
the manufacturer, or according to the manufacturer’s specifications. 
 

Summary of Contents for Pro-lok

Page 1: ...DOUBLE LOCKING MECHANICAL QUICK HITCH Installation Operation Manual English Important This manual should be kept with the excavator at all times for easy reference...

Page 2: ...ce Information 15 Warranty 16 Example Declaration Error Bookmark not defined Serial Number Location Serial Number Stamped plate on side of hitch Sticker on rear of control box Sticker on solenoid mani...

Page 3: ...ro Lok Item Supplied Mechanical quick hitch CE Declaration of Conformity Ratchet Installation and operation manual Safety pin not required stickers Warning label Lifting eye test certificate see note...

Page 4: ...or invalidate the product warranty IMPORTANT All Harford Pro Lok hitches are CE certified having undergone a thorough evaluation process by Harford Attachments Any subsequent modification to the hitc...

Page 5: ...safe working load SWL taking into account the additional weight of the hitch which is stated on the punched information plate affixed to the side of the hitch IMPORTANT Be aware that the addition of t...

Page 6: ...ntacting the manufacturer Harford Attachments on 44 0 1603 403099 The following safety label is supplied in the required quantities with the Pro Lok fitting kit Their locations are given in the descri...

Page 7: ...ons SAFETY NOTICE It is strongly recommended that the Pro Lok quick hitch is lowered to the ground the machine switched off the key removed and the parking brake engaged blocks applied to the wheels t...

Page 8: ...an environmentally responsible manner Compatible Attachments Attachment Can be used up to the safe working load Can be used with limitations Cannot be used All Harford Attachments Buckets Hammer or br...

Page 9: ...ther 3 Repeat step 2 with the crowd link arm linkage 4 Grease the two pins and visually check that they are located and secured correctly 5 Use the excavator hydraulics to carefully rotate the quick h...

Page 10: ...ent pin is firmly seated in the C shaped jaw and the rear pin is seated on the rear locking surface shown in Figure 2 step 4 5 Use the ratchet spanner to rotate the threaded actuator in a clockwise di...

Page 11: ...Figure 3 Correct operating position Figure 4 Incorrect operating position Figure 5 Releasing an attachment position...

Page 12: ...duct 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 t...

Page 13: ...ng it to lift load If your Pro Lok hitch was supplied with a factory fitted lifting eye it must be examined at regular intervals for damage and defects by a competent person in accordance with UK HSE...

Page 14: ...off the threaded shaft and remove completely 4 Using an Allen key loosen the cap screws in the split nut 5 Place the ratchet spanner in the square drive and rotate the split nut anti clockwise L H th...

Page 15: ...is necessary to remove attachments in order to gain access to a grease nipple on the underside of the hitch 4 Grease threaded actuator points as required WARNING Ensure wedge plate is fully retracted...

Page 16: ...ntained in accordance with the instruction contained within this manual or have been subject to unauthorised repair or modification the warranty will be invalidated 3 The seller s liability in respect...

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