Specifications

D-1000B Heater Operations & Maintenance
5.4.7 Removal and Installation of Fuel Solenoid
5.4.7.1 Removal Procedures:
1. Disconnect power cord and allow heater to cool.
2. Using an 8mm nut driver, remove two middle screws from the maintenance access panel (7) and loosen four
corner screws (78).
3. Slide maintenance access panel (7) rearward.
4. Disconnect the fuel solenoid wire leads (red, white, and yellow with green stripe).
5. Using a 4mm Allen wrench, loosen and remove fuel solenoid cap nut (71A) and wave washer (71B) as shown in
Figure 5-6.
6. Remove fuel solenoid (71) off of fuel pump.
5.4.7.2 Installation procedures:
1. Install new fuel solenoid (71) onto the fuel pump assembly (See Figure 5-8).
2. Install wave washer (71B) and cap nut (71A) as shown in Figure 5-6.
3. Using a 4mm Allen wrench, tighten cap nut (71A).
4. Reconnect electrical leads to fuel solenoid.
5. Using an 8mm nut driver, install two middle screws on the maintenance access panel (7) and tighten four corner
screws (78).
6. Test heater in accordance with the operations manual. (See Chapter 6).
Figure 5-8 – Fuel Solenoid Installation
MAINTENANCE, and REPAIR PROCE
DURES 5-11 DHS SYSTEMS LLC
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