11
Service and Repair Manual
Model 710/760
710BV/KV/MV DISMANTLING
Important! Before carrying out any repairs, the hammer should be checked for electrical safety and for mechanical
performance. For electrical safety the hammer should be placed on a non-conductive surface which is either
of a wooden construction (with the mains supply disconnected) which contains no metal parts or a bench
which is insulated by a rubber mat. The hammer should then be checked by high voltage flash testing. On
completion of dismantling procedure all electrical components should then be checked for electrical safety.
The hammer should ONLY be checked for hammer performance if the unit passes the electrical safety test.
Service and Repair Manual
Model 710BV/KV/MV
Fig. 1
Removing
the handle
assembly
1. Remove two screws (14), two screws (17), two
washers (18) and remove handle assembly.
Note: It will be necessary to pull hard on the top of
the handle assembly after removal of screws
(17), to remove module (21) with the handle
assembly.
2. Disconnect RTR loom (26) from field loom (25).
18
14
17
25 26
Fig. 2
Fig. 3
Removing the
handle halves
and speed
control switch
1. Remove screw (2) and handle cushion.
2. Remove pivot bolt (4) and pivot nut (3).
3. Remove handle halves (5 and 6) and lower handle
cover (13).
4. Remove switch wires from handle half (6).
5. Remove lower cord clamp (7), upper cord clamp (8)
and foam slug (9).
6. Remove cord (12) and cord protector (11) from handle
(5).
7. Remove speed control (10), switch (24) and terminal
block ((115) 710KV/BV) ((126) 710MV) from handle
(5).
8. Remove screw (27), retaining plate (28) and RTR loom
(26).
Removing the
isolation
module
assembly
1. Remove upper handle mount (19), isolation
bellows (20) and isolation module (21).
WARNING: Do not dismantle isolation module
(21).
2
3
9
8
4
7
2
5
6
2
1
21 20 19
13
21
24
10
12
26
28
27
11
115 (710KV/BV)
126 (710MV)
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