Lockout Kit, Open Center (Oc), Closed Center (Cc) - Stanley HD01 User Manual

LOCKOUT KIT OC/CC
DUAL SPOOL FEATURES FOR THE HD01 HAMMER DRILL
This tool is furnished with an on-off valve spool commonly referred to as a "dual spool" which permits
adjustment so the tool may be operated on either an open-center hydraulic system or a closed-center
hydraulic system. The dual spool is normally set to the open-center (OC) position at time of manufac-
ture. The dual spool can also be disabled so that the tool may be set to open-center only operation or
closed-center only operation. For more details, please refer to the following instructions.
SETTING THE TOOL FOR EITHER OPEN-CENTER OR CLOSED-CENTER
To change the tool to closed-center (CC) system operation, locate the knurled knob on the spool end. Note that
the knob contains two set screws which are located directly opposite one another. Turn the knurled knob so that
the set screws are on a horizontal or cross-wise line. To change the tool to open-center (OC) system operation,
turn the knurled knob so that the set screws are on a vertical or up and down line. For more detailed information
on making these adjustments, refer to the User Manual.
TO DISABLE DUAL SPOOL OPERATION AND CONVERT TO OPEN-CENTER
The on-off valve spool commonly referred to as a "dual spool" can be set to open-center or closed-center opera-
tion and then locked in position. The lock disables the normal method for adjusting the dual spool so that the tool
cannot be changed from one hydraulic system setting to another (OC to CC or CC to OC) without first removing
the lock. The parts included in this kit are required to disable the dual spool operation and install the lock. If you
do not wish to disable the dual spool operation, you may discard this kit. To install the kit, refer to the instructions
below.
FOR OPEN-CENTER (OC) SYSTEM OPERATION ONLY:
1. Turn the knurled knob so that the two set screws are on a vertical or up and down line.
2. At the end of the valve spool opposite from the knob is an o-ring which retains two steel balls. Remove the o-
ring and the two (2) steel balls.
3. Obtain the set screw from the kit and install it (use a small amount of Loctite) in the threaded hole located in the
o-ring groove (the groove for the o-ring which you just removed). Tighten the set screw until snug and then back
off 1/2 turn. Check to make sure the valve spool moves freely.
4. Replace the two steel balls and the o-ring.
FOR CLOSED-CENTER (CC) SYSTEM OPERATION ONLY:
1. Turn the knurled knob so that the two set screws are on a horizontal or cross wise line.
2. At the end of the valve spool opposite from the knob is an O-ring which retains two steel balls. Remove the O-
ring and the two (2) steel balls.
3. Obtain the set screw from the kit and install it (use a small amount of Loctite) in the threaded hole located in the
O-ring groove (the groove for the O-ring which you just removed). Tighten the set screw until snug and then back
off 1/2 turn. Check to make sure the valve spool moves freely.
4. Replace the two steel balls and the O-ring.
14 ► HD01 User Manual
KIT P/N-73018
IMPORTANT
HYDRAULIC SYSTEM OPERATION
OR CLOSED-CENTER ONLY OPERATION