Hale MG - Manual (Page 104)

Muscle Pumps
5-40
2. 40BD Series Valve Maintenance
(Refer to figures 6-19 and 6-20)
The Hale 40BD series valve requires a minimum
amount of maintenance. Most maintenance can be
performed with the valve in place on the apparatus.
The only time the valve must be removed is when
there is not access to the valve or the valve requires
rebuilding.
a. To remove the valve from the
apparatus do the following:
1) Place apparatus out of service in
accordance with departmental
procedures.
2) Open all drains and release
pressure from pump system.
3) Tag and disconnect electrical
wires from valve.
4) Disconnect valve operator reach
rods and remove panel interference.
5) Disconnect drain lines from valve
VALVE BODY IS HEAVY. MAKE SURE THE
VALVE BODY IS PROPERLY SUPPORTED
BEFORE REMO VING FASTENING DEVICES.
6) Remove thread cap from T-bolt
on V-clamps.
7) Remove jam nuts from clamps
then loosen T-bolt nuts.
8) Slide the clamps towards the
connectors to clear valve.
9) Slide valve body from between
both connectors.
10) Take valve to suitable work area
for disassembly and repair.
b. To install the valve in the apparatus
do the following:
1) Make sure the connector mating
surfaces are clean and free from
debris and dirt.
2) Make sure the V-clamps are on the
connectors and there is clearance
to allow insertion of the valve
body between the connectors.
3) Apply a small amount of grease to
the O-ring grooves on the valve
body to hold the O-rings in place
and install new O-rings in both
grooves.
4) Making sure the O-rings do not
get pinched slide the valve body
between the connectors.
5) Once valve is in place and
oriented slide the V-clamps into
place over the valve body groove
and connectors.
6) Tighten the T-bolt nut to 20 ft-lb
(27 Nm) on each clamp. Install
jam nuts then install thread caps.
7) Reconnect drain lines, operator
reach rods and electrical
connections.
8) Test apparatus and check valve
for leaks.
9) Return apparatus to normal
operation.
c. To lubricate valve ball and seat do the
following:
1) Place apparatus out of service in
accordance with departmental
procedures.
2) Open all drains and release
pressure from pump system.