11
Rev. 5/22
GB740 S/N 1175 AND ABOVE
PLEASE CONTACT GAGE BILT FOR ALL OTHER SERIAL NUMBERS.
FILLING AND BLEEDING PROCEDURE:
WARNING:
Do not cycle tool without air bleeder assembly (704153), or the screw and stat
-
o
-
seal, installed in tool head. Severe
personal injury could result.
Use CAUTION when removing screws, air bleeder assembly (704153) and fill bottle (745263). Hydraulic oil may be under
pressure.
CAUTION:
Before filling handle assembly (744129), air piston assembly (744121) should be all the way down.
CAUTION:
When forcing piston rod assembly (744136) downward, with head cylinder assembly (740109) removed, hydraulic oil will
eject forcibly from handle assembly (744129).
CAUTION:
When bleeding tool, ensure tubing is free from kinks or other obstructions.
Bleeder hole on head cylinder assembly
(740109). Button head cap screw (402482)
& stat
-
o
-
seal (S572).
Images may not reflect actual tool.
Oil Passage hole
O
’
ring (S832)
Handle Assembly and
Power Cylinder hole
***Keep air
hole free
from oil***
Note:
•
Air Bleeder Assembly (704153) (sold separately) is required.
FILLING & BLEEDING VIDEO AVAILABLE AT:
http://www.gagebilt.com/rivet_tools_videos.php
BLEEDING PROCEDURE:
To replace a small amount of oil,
DISCONNECT AIR FROM TOOL.
Remove button head cap screw (402482) and stat
-
o
-
seal (S572) from
head cylinder assembly (740109). Install air bleeder assembly (704153) and connect tool to air line. Cycle ten times to fully circulate oil
through hydraulic system.
DISCONNECT AIR FROM TOOL,
remove the air bleeder assembly (704153), and reinstall button head cap
screw (402482) and stat
-
o
-
seal (S572) on head cylinder assembly (740109). Torque 35
-
40 inch lbs. (3.95
-
4.52 Nm). Do not over tighten.
This will ensure the removal of any air from the hydraulic system and its replacement with oil.
FILLING AND BLEEDING PROCEDURE: (
Required after tool has been dismantled).
1.
Place piston rod wrench assembly (704149) in power cylinder (743131) and carefully push piston rod assembly (744136) and air piston
assembly (744121) completely down.
2. Fill handle assembly (744129), power cylinder (743131) and the oil passage on top of handle assembly (744129) with automatic
transmission oil, Dexron® III or equivalent. When looking at the top of the handle assembly (744129), the oil passage is the hole that
is counterbored for o'ring (S832). See image below.
3. Push piston assembly (740409) full forward in head cylinder assembly (740109), then attach head cylinder assembly (740109) with
care, ensuring gasket (704129) and o'ring (S832) are properly installed. Apply Loctite® 242 to button head cap screws (400062) and
torque uniformly to 40 inch lbs. (4.52 Nm) to prevent leakage around gasket (704129).
4.
ENSURE TOOL IS DISCONNECTED FROM AIR.
Remove button head cap screw (402482) and stat
-
o
-
seal (S572) from head cylinder
assembly (740109). Install air bleeder assembly (704153) and connect tool to air line. Cycle ten times to fully circulate oil through
hydraulic system.
5.
DISCONNECT AIR FROM TOOL.
Remove air bleeder assembly (704153) and install button head cap screw (402482) and stat
-
o
-
seal
(S572) on head cylinder assembly (740109). Torque 35
-
40 inch lbs. (3.95
-
4.52 Nm). Do not over tighten.
6.
Reconnect air and cycle tool ten more times. Check tool stroke using instructions a thru c and diagrams below. We recommend
using dial calipers.
a. With the actuator assembly
-
air (704130) released check dimension (A).
b. Holding actuator assembly
-
air (704130) in, check dimension (B).
c. Add dimension (A) to dimension (B). If stroke doesn
’
t check 1.330" (33.8 mm) min. (See figures below) follow
bleeding procedure above until stroke met.
For your consideration, Gage Bilt offers a depth gage (Pt.# A
-
1935) to help simplify and more accurately check your tool stroke.
Please contact Gage Bilt for more information.
Air Bleeder
Assembly
(704153)
