TM 10-4610-310-14
UNIT MAINTENANCE
LIGHTWEIGHT WATER PURIFIER
HIGH-PRESSURE PUMP MODULE
HIGH AND LOW PRESSURE SWITCHES
REMOVAL/INSTALLATION
INITIAL SETUP:
Equipment Condition Required:
Tools
All equipment de-energized, diesel engine off, high
Tool Kit, General Mechanics, Automotive
pressure hose taken off from the HP module
Material/Parts
Rags, cotton, (item 21, WP 0136 00)
Tape, anti-seize, (item 28, WP 0136 00)
Switch, high-pressure, (PN 122P88C6R990)
Switch, low-pressure, (PN 122P85C6R990)
GENERAL
This work package contains information and instructions for the removal and installation of the high-pressure
switch and low-pressure switch used on the high-pressure pump module in the Lightweight Water Purifier (LWP).
NOTE
The pressure switches looks identical on the exterior. Open the cover on the pressure switch by loosening the
two screws and swinging the cover away. Check the inscriptions inside the switch. Low pressure is rated from
50-250 psi and high-pressure switch is rated from 700-1500 psi.
REMOVAL
High Pressure Switch
Confirm that the correct switch is selected. See Note above.
1.
Loosen four screws on junction box cover. Remove junction box cover. See Figure 1.
2.
JUNCTION BOX
ASSEMBLY
FUEL TANK
SCREW
SWITCH
(4 PLACES)
MOUNTING
PANEL
WIRING NOT SHOWN
FOR CLARITY
Figure 1. Junction Box Assembly.
