Avdel 07500, Instruction Manual

AIR PISTON ASSEMBLY

Ensure oil is drained from the tool.
Remove air cylinder 

68

 as described earlier.

Using external circlip pliers* free circlip 

48

 and drop out piston buffer 

50

.

Using an Allen key* unscrew four screws 

67

 and separate cylinder head assembly 

24

 from head and handle sub-assembly 

1

.

Separate air piston assembly 

40

 from cylinder head assembly 

24

 by gently tapping out handle insert 

51

.

Unscrew kaylok nut 

46

 using a spanner* and remove from intensifier rod assembly 

52

 the following: piston insert 

47

, external circlip

48

, piston buffer 

69

, insert retaining plate 

43

, gasket 

65

, ‘O’ ring 

71

, ‘H’ ring seal 

45

, air bleed insert 

44

, handle insert 

51

, spiral

back up ring 

42

, square seal 

41

, ‘O’ ring 

76

 and anti extrusion ring 

75

.

Remove ‘O’ ring 

54

 and head gasket 

74

 from cylinder head assembly 

24

.

The intensifier rod valves are pre-set and should not be tampered with.

Assemble in reverse order to dismantling.

HEAD CYLINDER

Ensure that the head piston is in the forward position before proceeding to dismantle.
Pull off rear pin tail deflector 

63

.

Release the lock on insert retainer 

21

 by loosening screw 

2

 using an Allen key*.

Using combination tool for head cylinder* unscrew and remove insert retainer 

21

.

Pull out head piston 

12

 together with seal housing 

20

. Taking care not to damage the head bores.

Pull off front pin tail deflector 

15

.

Unscrew screws 

16

 using an Allen key* and remove head end cap 

14

 and wiper ring 

80

.

Remove internal circlip 

8

 using internal circlip pliers*.

Remove retaining washer 

9

, square seal 

10

 and spiral back up ring 

11

.

Assemble in reverse order to dismantling.

AIR VALVE SETTING

To set the air valve (tool fully assembled), unscrew front valve seat 

38

 and rear valve seat 

31

 a few turns.

Connect airline to the tool. Air should now leak through front valve seat 

38

.

Using spanner (front valve seat)*, screw in front valve seat 

38

 until ‘O’ ring just seats and air leak ceases.

Push valve stem 

35

 fully back. Air should now be leaking through rear valve seat 

31

.

With valve stem 

35

 held fully back, screw in rear valve seat 

31

 using spanner* until ‘O’ ring just seats and air leak ceases.

14

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I M P O R T A N T

Check the tool against daily and weekly servicing.

Priming is ALWAYS necessary after the tool has been dismantled and prior to operating.