OKADA TOP Series Owners And Operators Instruction Manual & Parts List page 27

3. Grease-up
● Grease every 2 hours through the grease nipple on front cap using high quality Chisel Paste.
● While greasing; the breaker must be stood up-right then with the weight of the carrier; press the working tool
all the way until it stops.
● Pump in Chisel Paste until grease comes out around the Working Tool or
from the Chisel Set Pins.
** DO NOT fill up the space between the piston and chisel with grease,
otherwise seals may be damaged.
● When Sliding Surface of working tool becomes dry immediately,
please stop operation and refill Chisel Paste.
Note: Working Conditions and grease quality greatly effect the amount of grease
required to properly lubricate the tool. See chart for reference:
Breaker Class
Tube/ Day
3. Inspection for oil leakage
Location
Between the front
A
cap bushing and the
chisel.
Between the back
B
cap and the hose.
Between the cylinder
C
and the valve box.
Between the valve
D
box and the valve
cap.
Between the
E
accumulator and the
cylinder
Between the back
F
cap and the cylinder.
4. Inspection for gas leakage
Location
Gas valve body inlet.
Between the gas valve
body and cap mount.
Between the back cap and
the cylinder.
● Leaking point can be easily identified by applying soapy water.
If gas is depleted shorter than expected although the above problems are not found, replace the back cap O-ring,
cylinder sleeve O-ring, and sleeve U-packing.
Note: ● Before installing new U-packings, apply a slight coat of hydraulic oil to their surface.
● Pay attention not to damage or cut U-packing or O-ring when installing.
21-90#
1 - 2
Possible Cause
Cylinder U-packing
damaged, worn or
hardened.
Clamp bolt loosened,
O-ring worn or damaged.
Valve box set bolts
loosened, or O-ring worn,
damaged or hardened.
Valve cap bolt loosened,
or O-ring worn, damaged
or hardened.
Accumulator set bolts
loosened, or O-ring worn.
damaged or hardened.
Loosened side rods, or
back cap O-ring worn or
damaged.
Possible Cause
O-ring worn or hardened.
Weak spring tension. Worn gas valve
Loose gas valve body.
Gas valve body
hardened.
Side rods loosened, or back cap O-ring
worn or hardened.
See illustration:
See illustration:
100-210#
2 - 3
Remedy
Replace U-packing.
Retighten clamp bolt.
Replace O-ring.
Retighten valve box set bolts
or replace O-ring.
Retighten valve cap bolts or
replace O-ring.
Retighten accumulator
bolts or replace O-ring.
Retighten side rods or replace
back cap O-ring.
Replace gas valve O-ring.
Replace spring or gas valve.
Retighten gas valve body.
O-ring worn or
Replace gas valve body O-ring.
Retighten side rods or replace
back cap O-ring.
27
270-300#
3 - 4
set
Remedy
400-800#
4 - 5
B
F
E
D
C
A