Section 03: FUEL SYSTEM
PA1593
12
With the ignition "ON" and the proper diagnostic
tool (DDR) (for information regarding the DDR,
see "01 ENGINE" in this manual), check the
throttle counts at idle and full throttle positions.
Proper pedal output should be 20/30 counts at
idle and 200/235 at full throttle. If adjustment is
necessary, remove the potentiometer retaining
screws and rotate the potentiometer clockwise
to increase counts or counterclockwise to
decrease. When correct output is confirmed,
tighten retaining screws.
6.2 POTENTIOMETER REPLACEMENT
1. Disconnect cable harness connector.
2. Loosen the two screws and remove
potentiometer. Retain for re-assembly.
3. Discard potentiometer (Fig. 11).
CAUTION
Note the routing and clamping locations of the
cable before disassembly. Proper cable
routing and fastening is critical to the
operation of this system. Marking the foot
pedal assembly to record cable routing is
recommended.
2. Position new potentiometer. Press
potentiometer onto the potentiometer shaft,
matching cutouts in shaft to drive tangs of
potentiometer. Apply hand pressure until
potentiometer has bottomed out in housing.
Reinstall screws (Fig. 11) and tighten just
enough to secure potentiometer lightly. Tighten
screws to 10 - 20 Lbf-in (1.13 - 2.26 Nm).
3. Reconnect electronic foot pedal assembly's
cable harness to the ECM connector. If
potentiometer calibration is necessary (see
"FUEL PEDAL ADJUSTMENT" in this
section).
CAUTION
Make sure the cable harness is routed
correctly, and securely installed so that it does
not become pinched, stretched, or otherwise
damaged during vehicle operation.
FIGURE 11: ELECTRONIC FOOT PEDAL ASSEMBLY
03035
7. SPECIFICATIONS
Primary Fuel Filter (Fuel/Water Separator) With Volvo D13 Engine
Part number ............................................................................................................................................21380475
Filter torque ............................................................................................................. ½-¾ turn after gasket contact
Secondary Fuel Filter With Volvo D13 Engine
Part number ............................................................................................................................................20972293
Filter torque ............................................................................................................. ¾- 1 turn after gasket contact
Fuel tank Capacity
Standard (All vehicles) ................................................................................................ 208 US gallons (787 liters)
Air Cleaner
Service Part No ........................................................................................................................................ 7182 8N
Prevost number (element cartridge) .......................................................................................................... 530197