INLET FITTING
ADAPTER
LUBRICATE O-RING
WITH DIESEL FUEL
TORQUE ADAPTER
NUT TO 15 ±10 IN-LBS
(17 ±1.1 NM)
O-RING
FUEL FILTER
FUEL PUMP
COMPRESSOR
2. Remove the spring and brass ball guide from the cavity.
3. Carefully separate and discard the brass ball guide from
the pressure relief valve spring. DO NOT stretch or damage
the spring.
4. Remove the ball bearing from the cavity.
5. Inspect and clean all components.
6. Inspect and clean the cavity. Pay close attention to the center
hole in the cavity for any debris or a damaged edge. The edge
of the hole should be smooth with no nicks, DO NOT use any
tool that may damage the edge as this will cause loss of fuel
pressure.
7. Place ball bearing back in cavity on the center hole.
8. Place spring back in hole on top of ball bearing.
9. Lubricate O-ring with diesel fuel.
10. Install pressure relief valve cap and torque relief valve to
22 ±2 in-lbs (2.5 ±0.2 Nm)
11. Re-test the fuel pressure.
12. If fuel pressure is still above 10 PSI replace relief valve
assembly or fuel pump assembly.
IF READING IS BELOW 5 PSI 1. Check that there is fuel in the fuel tank.
2. Check the fuel filter for contamination.
Figure E.
Copy Part# SB0062, Rev. B, 09/2014 Page 3 of 6
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