Shibaura SG280E, Руководство по ремонту

Страница: 9 / 111

8
1. Pre-maintenance precautions
1. Wash the mower clean, and then drain oil, fuel, coolant, and other fluids prior to disassembly as
necessary.
2. Keep the maintenance workplace free from dust and brightly lit at all times.
3. Remove all oil and grease from disassembled parts, and then arrange the parts by group on a clean
work stand.
4. Check all work clothes, equipment, and tools to ensure a safe working environment.
2. Basic procedures for pre-maintenance precautions
1. The engine, HST, and hydraulic system are precision equipment. They should be kept clean and
disassembled only when necessary.
2. Parts that have become defective due to wear should be stored temporarily so that they can be
shown to the customer. Model, equipment number, part code number, and part name should be
clearly identified for placing an order.
3. During assembly, it is necessary to oil all movable parts and create an initial oil film for normal
lubrication.
4. Use appropriate tools to tighten bolts and nuts to an appropriate torque, unless specified otherwise.
5. Be sure to turn off the engine before performing inspection, maintenance, or repair work.
Tightening torque chart
* See the bolt head marks on the following page for strength divisions.
Coarse thread Fine thread
Screw
dimen-
sions
* Strength
division
Screw
pitch
Tightening torque
(kgf
⋅
m)
Tightening torque
(N
⋅
m)
Screw
pitch
Tightening torque
(kgf
⋅
m)
Tightening torque
(N
⋅
m)
4.8 0.15 to 0.21 1.47 to 2.06
8.8 0.27 to 0.37 2.65 to 3.63 M4
10.9
0.7
0.36 to 0.50 3.53 to 4.90
4.8 0.29 to 0.41 2.84 to 4.02
8.8 0.50 to 0.70 4.90 to 6.86 M5
10.9
0.8
0.68 to 0.96 6.66 to 9.41
4.8 0.50 to 0.70 4.90 to 6.86
8.8 0.85 to 1.15 8.33 to 11.3 M6
10.9
1.0
1.20 to 1.60 11.8 to 15.7
4.8 1.30 to 1.70 12.7 to 16.7 1.55 to 2.05 14.7 to 20.1
8.8 2.30 to 2.90 22.5 to 28.4 2.70 to 3.50 26.5 to 34.3
M8
10.9
1.25
2.90 to 3.70 28.4 to 36.3
1.0
3.10 to 4.10 30.4 to 40.2
4.8 2.60 to 3.40 25.4 to 33.3 2.90 to 3.70 28.4 to 36.3
8.8 4.50 to 5.70 44.1 to 55.9 5.00 to 6.40 49.0 to 62.7
M10
10.9
1.5
5.50 to 7.10 53.9 to 69.6
1.25
5.90 to 7.50 57.8 to 73.5
1-3 Maintenance precautions and procedures
Fig.1-2-4
Parking lever