Kango 710 Series Installation and operating manual

10
Service and Repair Manual
Model 710/760
TORQUE SETTINGS
SERVICETOOLS
All repairs may be completed with standard workshop tools and equipment.
MODEL 710/760
ITEM NO. PART NO. DESCRIPTION NM IN/LBS.
2 9170 3282 20 SCREW 1.8 19
4 9170 3284 70 PIVOT BOLT 2.8 25
17 9170 3284 10 SCREW 4 35
22 9170 7040 03 SCREW 1.8 16
31 9170 7040 02 SCREW 1.8 16
36 9170 0198 60 SCREW 4 35
50 9170 7040 04 SCREW 2 18
54 9170 7040 07 SCREW 3 27
710BV/KV
86 9170 3290 60 SCREW 15 133
101 9170 3278 60 SCREW 10 89
710MV
87 9170 3290 60 SCREW 10 89
100 9170 3278 60 SCREW 10 89
760KV/SV
103 9170 3290 60 SCREW 15 133
109 9170 3278 60 SCREW 10 89
760MV
115 9170 3290 60 SCREW 15 133
147 9170 7030 02 SCREW 0.7 6
Service and Repair Manual
Model 710BV/KV/MV/760KV/SV/MV

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.
ServiceandRepairManual
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
256
2
1
21 20 19
13
21
24
10
12
26
28
27 11
115 (710KV/BV)
126(710MV)

12
Service and Repair Manual
Model 710/760
Service and Repair Manual
Model 710BV/KV/MV
Fig. 5
Removing the
upper handle
cover
1. Remove two screws (22) and upper handle cover
(23). 23
22
Fig. 4
Dismantling
the lower
handle cover
1. Remove two pivot isolators (15), screw (27), retainer
(28) and field lead grommet complete with loom (26)
from lower handle support (13).
13
15
15
Fig. 7
Dismantling
the top cover
(BV, KV
only)
1. Remove retaining ring (111) and pull off cover
(110).
2. Remove handle locking knob (108), washer (107),
bolt (105). Remove handle (104). Remove
adaptors (106).
3. Remove strap casting (109) and remove retaining
ring (103) from top cover (102). Remove top
cover (102).
108
107
106
103
110
111
106
105
104 102
109
Dismantling
the latch bar
1. Remove latch retainer (100), latch spring (99),
spring cover (98) and latch bar (97) from nose
piece (96).
Fig. 6
96
100
99
98 97
27 28 26

13
Service and Repair Manual
Model 710/760
ServiceandRepairManual
Model 710BV/KV/MV
Fig. 9
1. Remove brush cover screw (29), brush cover (31).
Pull back and release brushes (32) from brush
holder (33).
2. Remove two screws (36), two screws (50) and
withdraw the motor from gear box (112).
Removing
the motor 112
36
Fig. 10
Dismantling
the motor
(armature)
1. Withdraw the armature (43) from the gear box
(112) and remove bearing mount (39), bearing
(40) and washer (41).
2. Remove bearing (46) and sealing ring (45).
112
39
40
41
43
45
46
Fig. 11
Dismantling
the motor
housing
1. Remove two brushes (32).
2. Withdraw baffle (42), field coil assembly (38) and
two field location rubbers (37) from motor
housing (35).
3. Remove four screws (34) and two brush holders
(33).
42
30
34 38
37
33
34 33
32 29 31
35
Fig. 8
Dismantling
the top cover
(MV only)
1. Remove handle locking knob (106), washer (105),
bolt (104). Remove handle (103).
2. Remove strap casting (107) and remove retaining
ring (102) from top cover (101).
106
105
101
102
103
104
107
50

14
Service and Repair Manual
Model 710/760
Fig. 13
Dismantling
the crank
assembly 65
64
63
62
61
60
59
1. Remove circlip (59), crank gear (60), crank circlip
(61), bearing (62) and O-ring (63) from
crankshaft (65).
2. Withdraw crank assembly and O-ring (63) from
top housing.
3. Remove crank key (64) and bearing from
crank (65).
Service and Repair Manual
Model 710BV/KV/MV
Fig. 12
Removing/
dismantling
the gear box
assembly
1. Remove blanking knob (72).
2. Remove six screws (54) and separate the gearbox
((112) BV, KV), ((120) MV) from the top
housing.
3. Remove gearbox foam insert (68), bearing (67),
lower clutch bearing (58), remove O-ring (55),
and press out seal (47).
4. Remove gasket (57) and two dowel pins (66).
68
67 58
112 (BV, KV)
120 (MV)
54
55
66
72
57
Dismantling
the top
housing
Fig. 14
1. Remove two rear handle plugs (53). Remove two
screws (50), two washers ((116) BV KV) ((119)
MV), access cover (51), O-ring (52), and breather
assembly ((113) BV, KV), ((124) MV).
73
53
50
116 (BV, KV)
119 (MV)
113 (BV, KV)
124 (MV)
51
52
53
47

15
Service and Repair Manual
Model 710/760
Fig. 15
Dismantling
the barrel
assembly
1. Remove four screws (86), transmitter housing
(85), O-ring (84) and the following items:
- barrel (83)
- washer (82)
- shim (81)
- striker (79)
- piston (77)
Removing
the
nosepiece
1. Remove five screws (101), nosepiece (96) and the
following items:
- O-ring (95)
- O-ring (94)
- anvil sleeve (93)
- anvil seals (92)
- anvil (91)
- transfer ring (90)
- buffer ring (89)
- catcher housing (88)
- O-ring (87)
Fig. 16
710KV/710BV DISMANTLING
86 85 84 83 81
79 78 77
82
101 96 95 94 93
92
91
(710KV)
91
(710BV)
90
89 88
87
ServiceandRepairManual
Model 710KV/710BV
Fig. 17
Dismantling
the piston
assembly
1. Remove gudgeon pin (76) from piston (77).
2. Remove bearing (74) from connecting rod (114). 77 76 114 74

16
Service and Repair Manual
Model 710/760
Fig. 19
710MV DISMANTLING
Fig. 18
Removing
the chuck
1. Remove four balls (99).
Dismantling
the chuck
1. Dismantle chuck by removing end cap (118)
remove chuck cover (117) and the following
items:
- circlip (116)
- buffer stop (115)
- buffer (114)
- chuck (113)
- latches (112)
- latch plate (111)
- latch spring (110)
- lock plate (109)
- lock chuck (108) 113 112 111 110 109 108
118 117 116 115 114
99
Fig. 20
Dismantling
the driver
assembly
1. Remove five screws (100), nosepiece (98) and the
following items from driver (97):
- O-ring (88)
- catcher (89)
- buffer ring (90)
- transfer ring (91)
- junk ring (92)
- seal (93)
- anvil (94)
- junk ring (95)
- O-ring (96)
100 98 97 96 95
94 93 92 91 90 89 88
Service and Repair Manual
Model 710KV/710BV
97

17
Service and Repair Manual
Model 710/760
ServiceandRepairManual
Model 710MV
Fig. 21
Fig. 22
Dismantling
the barrel
assembly
1. Remove four screws (87) and transmitter housing
(85) from top housing (73).
2. Remove O-ring (84) and striker (82), seal (81)
and piston (80) from barrel (83).
3. Remove shim (76), washer (75) and O-ring (86).
1. Remove gudgeon pin (79) from piston (80).
2. Remove bearing (77) from connecting rod (125).
Dismantling
the piston
assembly
87
80 79 125 77
86 85 84 83 82 81
80 76 75 73

18
Service and Repair Manual
Model 710/760
760KV/SV/MV DISMANTLING
ServiceandRepairManual
Model 710MV
Fig. 26
Fig. 23
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. 24
Fig. 25
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
256
2
1
21 20 19
13
21
24
10
12
26
28
27 11
115 (710KV/BV)
126(710MV)
Dismantling
the lower
handle cover
1. Remove two pivot isolators (15), screw (27), retainer
(28) and field lead grommet complete with loom (26)
from lower handle support (13).
13
15
15
13 13 13

19
Service and Repair Manual
Model 710/760
ServiceandRepairManual
Model 760KV/SV/MV
Fig. 28
Dismantling
the top cover
(KV, SV only)
1. Remove retaining ring (120) and pull off cover
(119).
2. Unscrew handle (116) and remove screw (117).
3. Remove clamping wheel (115), and withdraw
depth gauge rod (110), gauge clamp (111) and
screw (113).
4. Pull off strap casting assembly (114), remove top
cover retaining ring (118) and top cover (112).
117
116
115 118 112 114
120 119 113 111110
Fig. 29
Dismantling
the switch
assembly
(MVonly)
1. Remove two screws (147) and clamp plate (146).
2. Removeknob(145).
3. Remove nose cone end cap (139) and chuck cover
(138).
4. Remove the following items from driver (110):
-wireclip (137)
- buffer stop (136)
- buffer (135)
- chuck (134)
- latches (133)
- latch plate (132)
- latch spring (131)
- washer (130)
Dismantling
the latch bar
(KV, SV only)
1. Remove latch retainer (108), latch spring (107),
spring cover (106) and latch bar (105) from nose
piece(104).
Fig. 27
104
108
107
106 105
110
139
146
138137136135
134 133132 131 130
147
145

20
Service and Repair Manual
Model 710/760
ServiceandRepairManual
Model 760KV/SV/MV
Fig. 31
1. Remove brush cover screw (29), brush cover (31).
Pull back and release brushes (32) from brush
holder (33).
2. Remove two screws (36), two screws (50) and
withdraw the motor from gear box (112).
Removing
the motor
Fig. 32
Dismantling
the motor
(armature)
1. Withdraw the armature (43) from the gear box
(112) and remove bearing mount (39), bearing
(40) and washer (41).
2. Remove bearing (46) and sealing ring (45).
112
39
40
41
43
45
46
Fig. 33
Dismantling
the motor
housing
1. Remove two brushes (32).
2. Withdraw baffle (42), field coil assembly (38) and
two field location rubbers (37) from motor
housing (35).
3. Remove four screws (34) and two brush holders
(33).
42
34
38
37
33
34 33
35
112
36
30
32 29 31
50
Dismantling
the top cover
(MV only)
1. Remove retaining ring (129) and pull off cover
(128).
2. Unscrew handle (125) and remove screw (124).
3. Remove clamping wheel (126), and withdraw
depth gauge rod (121), gauge clamp (122) and
screw (123).
4. Pull off strap casting assembly (127), remove top
cover retaining ring (120) and top cover (116).
Fig. 30
120
124
125
116
126
129128 127
123 122 121

21
Service and Repair Manual
Model 710/760
ServiceandRepairManual
Model 760KV/SV/MV
Fig. 34
Removing/
dismantling
the gear box
assembly
1. Remove blanking knob (78) (KV, SV only).
2. Remove six screws (54) and seperate the gear box
(124) from the top housing (79).
3. Remove bearing (67), lower clutch bearing (58),
seal (47) and O-ring (55).
4. Remove gasket (57) and two dowel pins (66). 67 58
124
54 55 47
57
78
(KV,SVonly) 66
79
Fig. 35
Dismantling
the top
housing
1. Remove two rear handle plugs (53). Remove two
screws (50), two washers ((112) KV/SV), ((144)
MV), access cover (51), O-ring (52) and breather
assembly ((116) KV/SV), ((141) MV).
73
53
50
121 (SV, KV)
144 (MV)
126 (SV, KV)
141 (MV)
51
52
53
Fig. 36
Dismantling
the crank
assembly
1. Remove circlip (59), crank gear (60), crank circlip
(61), bearing (62) and O-ring (63) from crankshaft
(65).
2. Withdraw crank assembly and O-ring (63) from top
housing.
3. Remove crank key (64) and bearing from crank (65). 65
64
62
63
61
60
59

22
Service and Repair Manual
Model 710/760
Service and Repair Manual
Model 760KV/SV/MV
Fig. 37
Dismantling
the bevel
pinion
1. Bend back tab washer (70), remove clutch
nut (68) and the following items from bevel
pinion (77):
- disc spring (69)
- tab washer (70)
- friction disc (71)
- drive gear (72)
- bush (73)
- circlip (74)
- pinion (75)
- O-ring (76)
2. Remove pinion and bearing assembly from top
housing (112).
3. Remove bearing (75) from pinion (77) and O-ring
(76) from top housing (112).
77
75
73
71
69
76
74
72
70
68
112

23
Service and Repair Manual
Model 710/760
Fig. 38
Dismantling
the
nosepiece
1. Remove five screws (109) and separate nosepiece
(104) from bearing housing (102). 104
760KV/760SV DISMANTLING
109
102
ServiceandRepairManual
Model 760KV/760SV
Fig. 39
Fig. 40
Dismantling
the bearing
housing
1. Remove four screws (103) and separate bearing
housing (102) from top housing.
2. Remove O-ring (101) from bearing housing (102).
3. Remove circlip (97), and withdraw driver and
barrel assembly (96). Remove circlip (99) and
press off bearing (98).
4. Remove seal (100) from bearing housing (102).
103
Dismantling
the driver
assembly
1. Unscrew driver (96) from barrel (88).
2. Remove the following items from the driver (96):
- catcher housing (90)
- O-ring (89)
- buffer ring (91)
- recoil transfer ring (92)
- anvil (93)
- anvil seals (94)
- junk ring (95)
94
102 100 98
101 99 97
96
96 95 93(760SV) 90
93(760KV) 92 91 89
88

24
Service and Repair Manual
Model 710/760
Fig. 41
Fig. 42
Dismantling
the barrel
assembly
1. Remove the piston assembly (85), striker seal (86)
and striker (87).
2. Remove crown wheel (81) and crown wheel
bearing (80) from the the top housing (73).
Dismantling
the piston
assembly
1. Remove gudgeon pin (84) from piston (85).
2. Remove bearing (82) from connecting rod (125).
73
82
87 86
8085 81
84
85 125
ServiceandRepairManual
Model 760KV/760SV

25
Service and Repair Manual
Model 710/760
Fig. 43
Dismantling
the driver
assembly
1. Unscrew nosepiece (114), remove O-ring (101),
lip seal (113).
2. Remove driver assembly from bearing housing.
Remove circlip (112) and bearing (111) from
driver (110).
3. Remove the following items from the opposite end
of driver (110):
- wire ring (102)
- catcher housing (104)
- O-ring (103)
- buffer ring (105)
- recoil transfer ring (106)
- anvil (107)
- striker seals (108)
- junk ring (109)
111
760MV DISMANTLING
114 113112 110
109 108 106 104
108 107 105 103
102
ServiceandRepairManual
Model 760MV
101
Fig. 44
Dismantling
the bearing
housing
assembly
1. Remove four screws (115) and separate bearing
housing (100) from the top housing.
2. Remove the following items:
- spring (96)
- washer (97)
- dry sliding bearing (98)
- O-ring (99)
3. Remove locking ring (95) from top housing.
4. Remove drive sleeve assembly from barrel.
Remove circlip (91) from drive sleeve (94),
washers (93) and spacer (92).
115 100 99
95 94 93 92 93 91
96
97
98
Fig. 45
Dismantling
the barrel
assembly
1. Remove barrel (90) and crown wheel assembly with
piston (83) and striker assembly (85).
2. Remove piston asembly (83), striker seal (84) and
striker (85) from barrel (90).
3. Remove circlip (86), waved washer (87) crown
wheel bearing (88), and crown wheel (89).
90 89 88 87 86
85 84 83

26
Service and Repair Manual
Model 710/760
Fig. 46
Dismantling
the piston
assembly
1. Remove gudgeon pin (82) from piston (83).
2. Remove bearing (80) from connecting rod (140).
83 82 140 80
ServiceandRepairManual
Model 760MV

27
Service and Repair Manual
Model 710/760
Lubrication At service and repair intervals the lubrication should be carried out as shown in the diagram below. All
parts in the service kit should be fitted. The total amount of grease is 120gm (9170 3071 70 (60g) and
9170 3043 20 (60g)). Lubrication of the hammer is as shown on the grease chart.
ALL SCREWS SHOULD BE REFITTED WITH LOCKTITE®222 OR SIMILAR
Smear
Liberally coat
Generously coat
Pack
710MV
710KV/710SV
Service and Repair Manual
Model 710BV/KV/MV
45gm
40gm
20gm
(9170 3043 23)
45gm
40gm
(710BV)
(710KV)
(9170 3071 70)
(9170 3043 23)
(9170 3071 70)
20gm
(9170 3043 23)

28
Service and Repair Manual
Model 710/760
Lubrication At service and repair intervals the lubrication should be carried out as shown in the diagram below. All
parts in the service kit should be fitted. The total amount of grease is 120gm (9160 3071 70 (80g) and
9170 3043 20 (40g)). Lubrication of the hammer is as shown on the grease chart.
ALL SCREWS SHOULD BE REFITTED WITH LOCKTITE®222 OR SIMILAR
Smear
Liberally coat
Generously coat
Pack
760MV
Service and Repair Manual
Model 760KV/SV/MV
40gm
(760KV)
(760BV)
(9170 3071 70) 65gm
(9170 3071 70)
(9170 3043 23)
45gm
40gm
760KV/760BV