2-63
1. REMOVAL AND INSTALL
REMOVAL
If engine is running or full up pressure
into hydraulic system, absolutely does
not repair or tighten hose, fitting.
As hydraulic line explode, dangerous
accident may occur.
Lowered the bucket on the ground.
Shut off engine and raise the seat bar.
Raise canopy and remove the front cover
(1, 2).
For raising and lowering of the canopy,
refer to page 4-14 of the operator's
manual.
Disassemble hoses connected with HST
pump and auxiliary pump.
Loosen the nut(3) and bolt(4).
INSTALL
Install HST pump to frame by tightening
the nut(3) and bolts(4).
ÂTightening torque
- Nut(3) : 19.6Ü2.9kgfÂm
(142Ü21.0lbfÂft)
- Bolt(4) : 6.9Ü1.4kgfÂm
(49.9Ü10.1lbfÂft)
Assemble hose connected with HST
pump and auxiliary pump.
1)
2)
(1)
(2)
(3)
ö
(4)
(5)
(1)
(2)
4
3
1
2
6507AHT09B
13031GE18
GROUP 6 HST PUMP (PILOT TYPE)
2-64
2. STRUCTURE (1/4)
1
Rotary group
1-1 Rotary group
1-12 Cradle
1-13 Slide ring
1-14 Drive shaft
1-26 Bearing liner
1-31 Plain roller bearing
1-32 Cradle bearing assy
1-36 Retaining ring
1-37 V-ring
1-38 Shaft seal ling
3 Hydraulic control
6
Control cartridge
7
Pressure relief valve
8
Pressure relief valve
10 Pump housing
11 Flange bearing
14
Internal gear pump
16 Coupling
21 Locking screw
22 Locking screw
30 Socket head screw
32 Cylinder pin
43 O-ring
46 Eccentric screw
47 Seal lock nut
49 Roller bearing
30
11
43
3
16
49
10
49
32
22
21
6
7
8
32
21
7
47
46
21
1-37
1-37
1-38
1-31
1-36
1-26
1-32
1-12
1-13
1-1
1-14
6507AHT50
2-65
STRUCTURE (2/4)
14-1
14-10
14-19
14-13
14-6
14-12
14-5
14-21
14-8
14-9
30
12
43
2-1
2-13
2-12
2-32
2-26
2-36
2-31
2-37
2-14
6507AHT51
2
Rotary group
2-1 Rotary group
2-12 Cradle
2-13 Slide ring
2-14 Drive shaft
2-26 Bearing liner
2-31 Plain roller bearing
2-32 Cradle bearing assy
2-36 Retaining ring
2-37 V-ring
12 Bearing flange
14
Internal gear pump
14-1 Intermediate flange
14-5 Coupling
14-6 Internal gear pump
14-8 Shaft key
14-9 Snap ring
14-10 Socket head screw
14-12 O-ring
14-13 O-ring
14-19 O-ring
14-21 Cylinder pin
30 Socket head screw
43 O-ring
2-66
S