15
12/21 REV 9/22
GB745/206
-
500
-
5
GB745/206
-
500
-
5 with GB946 BLEED PUMP PROCEDURE:
WARNING:
Keep oil control valve on the GB946 bleed pump in the
“
OFF
”
position unless it is being used to bleed the tool or
when the hose adapter is place into a collection container for bleeding. Failure to do so will result in oil shooting
from the adapter at 200 psi. (13.8 bar) causing great personal injury.
WARNING:
Use CAUTION when removing bleed screws and stat
-
o
-
seals, Hydraulic oil may be under pressure.
WARNING:
Read and understand ALL warnings and cautions in GB946 powerunit manual and on pgs. 11
-
12 before proceeding.
Note:
•
GB946 bleed pump and Regulator (756605) are required. (Sold Separately).
OVERHAUL BLEED: (Make sure oil control valve on the GB946 is turned to the
“
OFF
”
position). (See GB946 manual for more information).
1.
Make sure the air piston assembly (744121) is all the way down then fill the oil passage.
2. Remove (2X) button head cap screws (402482) and (2X) stat
-
o
-
seals (S572) from head cylinder (204300).
3.
Ensure piston assembly (206129) is in forward position (.250 ±.005) (19.5mm ±.127mm) (Dim
“
A
”.
See image on pg. 13).
Caution:
Be aware oil may eject forcefully from open bleeder holes when pushing piston forward.
4. Attach and torque the button head cap screw and stat
-
o
-
seal to hole
“
R
”
on the head cylinder (204300) to 35 inch lbs. (3.95 Nm) then
attach the manifold
-
handle (745303) to the handle assembly (744129).
5. Remove the button head cap screw and stat
-
o
-
seal from the hole
“
P
”
on the manifold
-
handle (745303) and attach the pump hose
adapter to hole
“
P
”
on the manifold
-
handle (745303). Plug the GB946 powerunit into a 110V electrical source and turn the oil
control valve and motor control switch
“
ON
”.
(See images below).
6. Hold head cylinder so hole
“
P
”
faces down and over your oil collection container. Press the separate
“
ON
”
button (located on the
remote) and run pump for 5
-
10 seconds then release the button and turn the oil control valve to the
“
OFF
”
position.
7. Re
-
attach the button head cap screw and stat
-
o
-
seal to hole
“
P
”
on head cylinder. Remove the pump hose adapter and re
-
attach the button
head cap screw and stat
-
o
-
seal to hole
“
P
”
on the manifold
-
handle. Torque screws to 35 inch lbs. (3.95 Nm). Do not over tighten.
8.
Connect regulator (756605) to airline and connect tool to air. Cycle piston (206129) to rear position (.250 ±.005) (6.4mm ±.127mm)
(Dim
“
B
”.
See image on pg. 13). Disconnect air from tool.
***
If piston does not check (.250 ±.005)
(6.4mm ±.127mm)
(Dim
“
B
”)
in the rear position, repeat steps 1
-
8 above.
***
9.
Remove button head cap screw and stat
-
o
-
seal from hole
“
R
”
on head cylinder and hole
“
R
”
on manifold
-
handle.
10.
Attach the pump hose adapter to hole
“
R
”
on manifold handle.
11.
Place head cylinder over your oil collection container with hole
“
R
”
pointed down and turn the oil control valve and motor control
switch to
“
ON
”
position. (See images below).
12.
Run pump for 5
-
10 seconds by pressing the separate
“
ON
”
button (located on the remote). Release the remote
“
On
”
button and
turn the oil control valve to the
“
OFF
”
position.
13.
Re
-
attach the button head cap screw and stat
-
o
-
seal to hole
“
R
”
on head cylinder. Remove the pump hose adapter from hole
“
R
”
and
re
-
attach the button head cap screw and stat
-
o
-
seal to hole
“
R
”.
Torque screws to 35 inch lbs. (3.95 Nm). Do not over tighten.
14.
Ensure regulator (756605) is still attached and connect tool to air. Slowly loosen button head cap screw on hole marked
“
R
”
on head cylinder
to allow excess oil to drain. After excess oil has drained, torque screw to 35 inch lbs. Measure stroke (.500 ±.010) (12.7mm ±.25mm).
***
If piston does not check (.250 ±.005)
(6.4mm ±.127mm)
(Dim
“
A
”)
in the rear position, repeat steps 9
-
14 above.
***
Oil control valve
“
OFF
”
Oil control valve
“
ON
”
Motor Control Switch
“
ON/OFF
”
Pump Hose Adapter
Oil Container
“
OFF
”
“
ON
”
Remote
“
ON
”
button when
pressed, pumps oil thru
the hose adapter and into
tool.
