11. Insert the rod assembly and centering spring.
removed. The spool may now be pushed from either end of
the valve body.
12. Install the completed coil assembly on the solenoid
valve body and fasten with the four bolts.
13. When assembling the valve sections together be sure to
Do not remove the body sleeve unless replacement is
replace the O-ring on the connecting ports.
necessary. The sleeve-spool assembly is a matched set
and must be replaced as a unit in the event of wear or
14. Torque the nuts that hold the valve sections together
damage to one Of these parts.
to 25 foot-pounds (3.4575 m-kg).
INSPECTlON. Inspect the disassembled solenoid valve and
TESTING. When the valves have been reassembled, test for
perform the following maintenance as require:
proper operation by applying 12 volts DC to each of the
solenoids in turn. This should cause the valve to "click"
1. Thoroughly clean the spool and body in kerosene or
into the energized position. The click should be clearly
clean diesel fuel and examine the parts for scoring.
audible if the solenoid and valve are in good condition.
2. Inspect the centering springs for proper Iength. If one
Solenoids are replaceable.
spring is noticeably longer than the other spring, It should
Test the manual operation of the valves by depressing the
pushbuttons on each end of each valve until they bottom.
3. Discard all O-rings.
No tendency to stick should be apparent. The total stroke
of each pushbutton should be approximately 0.160 inch
(4.064 mm), plus or minus 0.002 inch (.0508 mm), all
measurements being taken from the point where the push-
button first contacts the valve stop.
ASSEMBLY. To assemble each solenoid valve, proceed as
INSTALLATION. Install the valve bank on the truck frame
and make all electrical and hydraulic connections. Be ex-
1. Be sure all pans we clean and free from dust and dirt.
tremely careful to prevent the entrance of foreign material
The sleeve, spool and O-rings should be coated with hy-
into the hydraulic lines and valves.
draulic oil before assembly.
OUTRIGGER EXTENSION CYLINDERS
The sleeve-spool assembly is J matched set and must
be replaced as a unit in the event of wear or damage
to one of these parts.
GENERAL. The function of the outrigger extension
2. Install the O-rings on the sleeve.
cylinders is to extend and retract the outrigger beams (see
3. Using a soft driving tool, push the sleeve into place in
the valve body.
REMOVAL. To remove the extension cy!inders, proceed as
4. Insert the spool into the sleeve.
1. Remove the hydraulic lines from the cylinder to be
5. Insert a large brass washer in each side of the valve
removed. Install duct plugs and caps to prevent the entry of
dirt into the system.
6. Install the two. small washers, being sure they seat inside
2. Remove the pin from the mar of the cylinder and re
each of the large washer.
move the outrigger beam from the outrigger box. Remove
the pin that connects the cylinder to the outrigger beam to
7. Insert the O-ring in place on the valve body.
remove the cylinder completely.
8. Place the large metal end plate washer over the tube.
Slide it to the end plate. lnstall the coil washer on the end
DISASSEMBLY. To disassemble the outrigger extension
plate. note the location of the coil washer.
9. Install the plunger in the solenoid coil tube with the
1. Loosen setscrews (12) and remove screw (14) and
pointed end facing away from the pushbutton assembly.
locking bracket (13). Unscrew rod bearing end (8) front
cylinder body (6) and remove piston rod assembly (7) from
10. Insert the O-ring on the end washer and push the end
cylinder body (6).
washer into the end plate tuba.