15
Use a long stem socket wrench 35 mm to unscrew the oil cylinder lock nut (32), and then use a suitable diameter pin
carefully to punch out the lever pin (41) to separate the trigger lever (37) from air cylinder (30). Carefully use a hex wrench
3 mm to unscrew the lock screw (31) behind the trigger lever (37) (See 11.6 Fig.1), and then vertically pull the oil cylinder
(15) out of the air cylinder (30) with care, the lock nut o-ring (32A) is jumped out from the thread of oil cylinder (15). Check
and replace the worn or scratched air cylinder (30) on the inner wall.
Carefully use a wrench 27 mm to dismantle the oil cylinder end cap (25), remove the hanging bracket (24) and hanging
bracket o-ring (23), take out the large & small return springs (21 & 22), and slowly press the threaded end of oil piston (18)
to take out the oil piston assembly (18AY).
Pay special attention to dismantle the oil cylinder end cap (25), do not let
the strong force of large & small return springs (21 & 22) jump out to hurt people. Be careful not to scratch the
rod of oil piston (18) and the inner wall of oil cylinder (15) (Fig.2).
Check and replace the worn oil cylinder o-rings (13, 27, 29) and oil cylinder back-up rings (14, 28) in the front part and
lower part of oil cylinder (15), as well as the oil piston o-ring (19) and oil piston back-up ring (20). Check and replace
the worn or scratched oil piston rod (18) and oil cylinder (15) on the inner wall. Also check and replace the weak or
broken large & small return springs (21 & 22). Finally check and replace the worn hanging bracket o-ring (23).
Clean and grease on the inner walls of oil cylinder (15) and air cylinder (30) (Fig. 3), the oil piston o-ring (19) and air piston ring (53).
Reverse above steps to reassemble the oil piston assembly (18AY), large & small return springs (21 & 22), oil cylinder end
cap (25) along with hanging bracket (24) and hanging bracket o-ring (23).
Pay special attention to the strong force of
large & small return springs (21 & 22) which might jump out to hurt people.
Reverse above steps to reassemble the oil cylinder (15) and air cylinder (30) together by aligning and using a hex wrench
3 mm to fasten the lock screw (31) behind the trigger lever (37) carefully (See 11.6 Fig.1), put a
new lock nut o-ring (32A)
onto the thread of oil cylinder (15) and carefully move it (32A) down to touch the top of air cylinder (30), and then fasten the
oil cylinder lock nut (32) with a long stem socket wrench 35 mm. Finally, reassemble the trigger lever (37) back to the air
cylinder (30) by punching the lever pin (41) into the original pin holes carefully (See 11.7 Fig.1).
Put the tool upside-down, and use the oil bottle (63) with new hydraulic oil to refill into the oil cylinder (15)
through the air cylinder (30) until the oil is flushed with the upper oil cylinder o-ring (29) (See 11.6 Fig. 3). Make
sure not to overfill oil, and rest for a while until the oil stops releasing air bubbles.
Use a pair of pliers to clamp the air piston lock nut (57), and slowly plug the air piston assembly (55AY) in a straight line into
the oil cylinder (15) through the oil cylinder lock nut (32) of air cylinder (30) (See 11.6 Fig. 1), then depress the air piston
assembly (55AY) 2 ~ 3 times. Finally, use a wrench 27 mm to reassemble the air cylinder end cap (59) & o-ring (58).
Reverse above steps to reassemble the collet case lock nut (11) and lock nut (12) to the threaded end of oil piston (18), then
use a ruler to measure distance 15.5 mm or 3/5˝ (Fig. 4) and fasten collet case lock nut (11) and lock nut (12) together. Insert
the rotation knob (26) into the oil cylinder end cap (25) and lock rotation knob (26) with a snap ring washer (10A) and a snap
ring (10), then insert the mandrel seat (9) connected with threaded mandrel (1) into collet case (8) from the rear end, then
screw collet case (8) clockwise all the way to touch collet case lock nut (11), and fasten these 2 parts (8 & 11) firmly by using
a 17 mm wrench and a 22 mm wrench (Fig.4). Screw front head (7) into oil cylinder (15) and fasten it firmly by using a 30
mm wrench. Finally screw part no. 3 ~ 6 together back to front head (7) and use a wrench 30 mm to fasten firmly. Now the
reassembly process is completed.
5.
6.
7.
8.
9.
10.
11.
12.
13.
1
3
4
5
6
7
8
9
10
10A
11 12
17
16
24 25
15
18
26
1.
2.
13
13
17
16
15
14
27
29
28
18
24
19 20
21
22
23
25
GREASE
30
15
3.
15.5
mm
3/5˝
4.
1
9
8
11 12
18
15
Содержание RNT 120
Страница 1: ......
Страница 6: ...5 7 DIMENSIONS 39 0 UNIT mm 240 3 303 4 91 0 121 4 115 2...
