TM 9-4520-272-14&P
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5
6
REPLACE
WARNING
Fuel is toxic. Be sure to place a petroleum absorbent mat or tray below the
fuel pump to collect any fuel. Be sure to wipe up any spills with a rag.
1. Tag and mark all fuel hoses connected to burner fuel pump.
2. Loosen fitting (1) on fuel hose (2) and remove hose. Wipe up any spilled fuel with a rag.
3. Loosen fitting (3) on fuel hose (4) and remove hose. Wipe up any spilled fuel with a rag.
4. Loosen fitting (5) on fuel hose (6) and remove hose. Wipe up any spilled fuel with a rag.
5. Loosen fittings (7) on fuel hoses (8) connected to both sides of Tee fitting (9) and remove
hose. Wipe up any spilled fuel with a rag.
6. Take note of orientation and remove Tee fitting (9). Clean any residual thread sealant and set
aside.
7. Take note of orientation and remove fitting assembly (10) installed at burner fuel pump outlet
(11). Clean any residual thread sealant and set aside.
8. Take note of orientation and remove shut off valve and elbow assembly (12). Clean any
residual thread sealant and set aside.
9. Remove nuts (13) and lock washers (14) on either side of burner fuel pump (15) that secure it
to the engine flywheel cover.
10. Loosen set screw (16) on pump drive coupling (17).
11. Remove defective burner fuel pump (15).
12. Install new burner fuel pump (15) by aligning shaft on pump drive coupling (17) with engine
shaft protruding from flywheel cover. Note that shaft on pump drive coupling is "D" shaped
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