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MOTOR BREAK-IN
Motor break-in is required whenever major components
of the motor have been replaced. Break-in the motor by
operating the tool with the motor control valve fully
open for approximately 15 minutes. Do not attempt to
drill with the tool during the break-in period.
ACCUMULATOR HOUSING,
ACCUMULATOR, FLOW SLEEVE,
PISTON, AND AUTOMATIC VALVE
SERVICE
1.
Secure the tool in a bench vise, with the "IN" and
"OUT" ports up, clamping on the flow sleeve tube
between the side rods. Soft vise jaws are recom-
mended.
2. Remove the pigtail hose assemblies.
Note: The tool is full of fluid and will drip from the
ports when the hoses are removed.
3. Remove the charge valve cap (12) (1-3/8 inch hex). .
Loosen the 5/8 inch hex lock nut on the charging
valve (14) 1-1/2 turns. Using a small punch, depress
the stem in the charge valve to discharge the
accumulator completely.
4. Remove the charge valve.
5. Remove the blower tube nut (43).
6. Remove the four side rod nuts (66) (1 inch hex).
7. Using a soft faced mallet, tap on the edges of the
motor assembly to drive it from the flow sleeve tube
(30).
8. Remove the accumulator housing assembly (46)
from the flow sleeve tube by tapping on alternate
ends of the side rods (78) with a soft faced mallet.
Be careful to prevent the washer (27), valve body
(56), automatic valve (32), and push pins (57) from
falling out when the accumulator housing assembly
is separated from the flow sleeve tube.
a.
If the valve body remains in the accumulator
housing assembly, lift the automatic valve and
push pins out immediately after the accumulator
housing assembly separates from the flow
sleeve tube. Set the accumulator housing
assembly aside.
b. If the valve body remains in the flow sleeve
tube when the accumulator housing is separated
from the tube, proceed with step 9.
9. Skip this step if the valve body remained with the
accumulator housing assembly when separated from
the flow sleeve tube. Grasp the valve body with one
hand and slide the valve body off of the piston and
away from the flow sleeve. Use your other hand to
prevent the washer, automatic valve, and push pins
from falling out. Remove the washer, automatic
valve, and 2 push pins. Do not use a magnet to
remove the push pins.
10. Slide the piston (29) out of the flow sleeve (31).
Slide it toward the accumulator housing end of the
flow sleeve.
11. Remove the flow sleeve tube from the vise and
position it over a work bench so as to allow the push
pins (58) to drop out. Hold a finger over the flow
sleeve to prevent it from sliding out of the flow
sleeve tube.
12. Holding the flow sleeve tube in one hand, push on
the flow sleeve to slide it out of the flow sleeve tube.
The flow sleeve may be removed from the flow
sleeve tube from either end of the tube. Use extreme
care in handling the flow sleeve as it contains very
sharp edges which can cut you. If the flow sleeve
does not seem to be easily removeable from the flow
sleeve tube, do not remove it unless necessary. To
assist in the removal of a flow sleeve that has proven
difficult to remove, use the following procedures.
a. Place the Stanley special split ring tool (p/n
04908) on top of the Stanley special flow
sleeve removal tool (p/n 04910). Place the flow
sleeve tube on top of the split rings. Using an
arbor press and the Stanley special accumula-
tor cylinder puller tool (p/n 05640) to protect
the flow sleeve, push the flow sleeve out of the
tube.
13. Obtain the accumulator housing assembly. Insert
Stanley special accumulator removal tool (p/n
05639) or a 1/2-20 long threaded rod through the
blower tube nut hole and thread it into the top of the
accumulator. Tap on the special tool or rod with a
mallet to drive the accumulator assembly (22, 23,
24, 25, & 26) out of the accumulator housing. If the
valve body is in the accumulator housing it will be
driven out along with the accumulator assembly.
Make sure the washer (27) between the valve body
and accumulator is properly located in its
counterbore before driving out the valve body and
12
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