PDF Operating & Maintenance Manual Sakai SW770 SW770HF Vibrating Roller - 2 MB
This comprehensive manual provides all the necessary information for the safe operation and routine maintenance of the Sakai SW770 and SW770HF Vibrating Rollers.
Operators will find clear instructions on controls, safety procedures, and best practices for achieving optimal compaction results.
The maintenance sections detail service schedules and procedures to ensure the longevity and reliability of your equipment.
It is an essential guide for every owner and operator.
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M No. 3498-36120-0
O
D Read this handbook thoroughly and understand the whole information
E contained before trying to operate, inspect and service your machine!
L
S
W
7
7
0
S
W
7
7
0
H
F OPERATING &
MAINTENANCE
INSTRUCTIONS
VIBRATING
ROLLER
From SW770 → 4SW48 – 10101
SW770HF → 4SW48 – 10101
--- Page 3 ---
WARNING: Negligence of these instructions can lead to accidents.
■ Know the stopping distance.
• When traveling on a road, bear in mind the stopping
distance. Avoid excessive speed, and abrupt starting
and stopping, and moving in a zigzag direction.
1.3 Before Starting the Engine
■ Adjust the operator’s seat to your most effective operating position.
• Sit on the operator’s seat. Adjust the seat so that your back will make contact with the seat
back when the brake pedal is depressed to the full extent. Check to be sure that the brake
pedal can be fully depressed without difficulty when you twist your body for reverse run.
■ Secure good visibility (with cabin)
• Keep the windowpane clean.
• Lock the windows and doors no matter whether they are open or closed.
• Do not leave the doors half-closed.
■ Secure forward and backward visibilities.
• Adjust the rear view mirrors and under mirrors for good visibility. If dirty, clean them. If
damaged, replace.
■ Check that the horn, lamps and gauges work correctly.
■ Before starting, make certain that each lever is in the neutral position and the
parking brake is applied.
■ When starting, sound the horn.
• Before starting the engine. Make sure there is no one
in the immediate vicinity and there are no obstructions
around the machine.
–7–
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WARNING: Negligence of these instructions can lead to accidents.
1
11
4
6
10
9
12
8
2
7 5
2
8
3
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--- Page 5 ---
2.1.4 Operating levers and pedals
Forward-reverse lever (F-R lever) with vibrator switch
Moving the F-R lever forward or backward makes the
machine travel forward or backward respectively. The Vibration ON / OFF
neutral position brings the machine to a stop. The vehicle Ⓕ Forward
speed increases or decreases in proportion to the lever
displacement. Ⓝ Neutral
The vibrator ON-OFF control is easily made by the F-R
lever top vibrator switch (See page 25).
Ⓡ Revarse
IMPORTANT
• For normal braking, return the F-R lever back to neutral.
• In an emergency, depress the brake pedal. More powerful braking will take place.
Brake pedal
In an emergency, push down on the pedal to the full extent, and the machine will come to a
sudden stop.
IMPORTANT
Do not use the pedal wherever practicable except for an emergency. If used during
the compacting operation of ashalt pavement, this can cause damage to its surface.
NOTE: Depressing the brake pedal brings the F-R lever into neutral (N).
– 27 –
--- Page 6 ---
3) Press down parking brake switch button to release the
brake. Check that indicator lamp on the monitor
display goes off.
Released
Applied
4) Move the F-R lever in the direction to travel, and the
machine will begin traveling.
CAUTION
Avoid abrupt operation of the F-R lever.
Ⓕ Forward
NOTE: The travel speed can be controlled by the throttle
lever and F-R lever.
Ⓝ Neutral
Ⓡ Revarse
WARNING
Pay extreme attention to the area behind the machine when backing, since the
space just behind it tends to be a blind spot.
– 37 –
--- Page 7 ---
2.9 Loading and Unloading
WARNING
• Use sturdy ramps with proper width, length and thickness which allow safe
loading and unloading.
• If the ramps deflect considerably under load, apply wooden blocks to reinforce
them.
• Loading should be conducted on a level and hard ground. Leave a sufficient
distance between the machine and the shoulder.
• To prevent slippage on the ramps, keep the drums free from mud, oils, etc. The
ramps must also be free of grease, oil and ice.
• Do not steer the machine on the ramps. If the machine is facing in the wrong
direction, allow it to dismount from the ramps and correct the direction.
For loading and unloading, use ramps or a proper loading stand.
2.9.1 Use of a trailer equipped with a winch
WARNING
Placing the unloader in UNLOAD position disrupts the power for traction. Do not
enter the areas ahead of and behind the machine. It is very dangerous.
1) Engage the trailer brake and chock its wheels. Fix the ramps so that the machine and
trailer are completely aligned.
☆ The angle between the ramps and ground must be
less than 15 degrees.
Ramp
☆ Leave a proper space between the ramps
according to the width of the roller drum.
Wooden block Less than 15°
Blocks
– 47 –
--- Page 8 ---
3.2 Walk-Around Checking
For efficient operation, daily, before-operation checking is very important. Before starting,
perform walk-around checking for loose bolts, nuts and signs of leakage in addition to items
as shown below:
Vibrating drum
・Loose bolts
・Condition of
shockmounts
Engine
・Oil level
・Oil leakage Hydraulic oil tank
・Oil leakage
・Oil level
Engine fan belt
・Looseness Air cleaner
・Clogging
Radiator Brake pedal
・Coolant leakage ・Function
・Coolant level ・Adjustment
・Fin cleanliness
Sprinkler tank
Fuel tank
・Water level
・Fuel leakage
・Fuel level
Hydraulic
Vibrating drum
components
and joints ・Loose bolts
・Condition of
・Oil leakage shockmounts
– 57 –
--- Page 9 ---
⑳ Brake 5 Hose
6 Bolts×2
1 Hose
Traveling motor disassembling procedure
• Traveling motor part No.4217-26000-1
• Before disassembly, carefully clean the circumference so
that foreign matter will not enter the traveling motor. 3 Hose
1) Hydraulic hose
2 Hose 4 Hose
Separate hydraulic hoses ① , ② , ③ , ④ , and ⑤ from the
motor.
• Attach a blind plug to thee hoses and motor-side adaptors
respectively.
2) Removal of traveling motor
Remove two bolts ⑥ , and then remove the traveling motor.
• A small quantity of gear oil will flow out of the motor.
Exercise care.
O-RING and
Back up ring
Motor case
6 Bolts×2
O-RING and
Back up ring 13 Brake shaft
7 Snap ring
12 Brake disc
8 Spring retainer 7 sheets
plate
11 Brake disc
9 Spring 8 sheets
10 Brake O-RING and
piston Back up ring
– 67 –