Fault Diagnosis - Stanley 07535 Manual

E N G L I S H

9. FAULT DIAGNOSIS

Symptom
Tool will not place
fastener
'Mandrel Slip' - jaws
will not grip mandrel
Jaws will not release
mandrel
Fasteners will not feed
through nose jaws
Excessive tail jaw wear
Feeding more than
one fastener at a time
Item numbers in bold refer to the general assemblies and parts lists pages 26-27.
Other symptoms or failures should be reported to your local Avdel authorised distributor or repair centre.
26
Possible Cause
Low air pressure.
Lack of lubrication.
High broach load.
Check for correct size mandrel.
Worn or broken tail jaws.
Tail jaws switched off .
Air in hydraulic system.
Worn or dirty tail jaws.
Insuffi cient air pressure/volume.
Tail jaw switch inoperable.
Air leaks to tail jaws.
Mandrel broken and not reaching tail
jaws.
Defective non-return valve.
Dirty tail jaws or jaw housing.
Faulty tail jaw switch.
Tail jaws not switched on.
Worn tail jaws.
Cursor orientation incorrect.
Incorrect nose jaws.
Mandrel follower spring not fi tted.
Incorrect gap between fastener head
and nose jaws when loaded.
Cursor sticking.
Weak outer spring around cursor.
Incorrect mandrel follower spring fi tted. Fit correct mandrel follower spring
High broach load.
Mandrel slip.
Incorrect gap between fastener head
and nose jaws when loaded
O R I G I N A L I N S T R U C T I O N
Remedy
Increase air pressure
Lubricate tool at air inlet point
Check fastener grip and application hole
size
New tail jaws
Switch on tail jaws
See 'Priming Procedure'
Clean or renew as necessary
Increase air pressure/volume
Replace switch
Renew 'O' rings on piston 8
Replace mandrel
Replace non-return valve
Clean and lubricate
Replace 'O' rings
Switch on tail jaws
Renew tail jaws
Refi t, ensuring correct orientation
Fit correct nose jaws
Fit correct mandrel follower spring
Set gap to 1.5mm - 3mm (1/16" - 1/8")
See 'Loading the Tool'
Clean and oil cursor
Renew cursor
Check application hole size and thickness
and fastener grip capability
Check as for 'Mandrel Slip' , above
Set gap to 1.5mm - 3mm (1/16" - 1/8")
See 'Loading the Tool'
Page Ref
25
9-10
9-10