TM-5-3805-254-14-P-2
TRUCK, DUMP, 20 TON, 6X4, ON-OFF HIGHWAY 71,000 GVW, IHC MODEL F-5070 (CCE)
TECHNICAL MANUAL; OPERATOR’S, ORGANIZATIONAL, DIRECT SUPPORT, GENERAL SUPPORT AND DEPT MAINTENANCE MANUAL (INCLUDING REPAIR PARTS INFORMATION AND SUPPLEMENTAL MAINTENANCE INSTRUCTIONS)
JUNE 1980
TM-5-3805-254-14-P-2 - Page 495 of 894
TRUCK SERVICE MANUAL
FUEL SYSTEM
Check 3 - Check Ball Travel
Cause
Loss of ball-travel caused by over-tightening of restrictor
orifice and consequent stripping of orifice threads.
Caution: Never try to attain the proper ball travel by
loosening the orifice as this will cause leakage around
the threads and defeat the purpose of the restrictor
orifice and check valve.
Correction
Orifice must be replaced if threads are damaged, Orifice
torque is 6 in-lbs [.7 No ml.
Ball travel is 0.020 to 0.030
inch [.51 to .76 mm] with orifice torqued in position (for
assembly
diagram
refer
to
Fig.
6-1-84).
Check 1 - Soft Lines
Cause
Use of filter-to-injector and injector-to-regulator lines
(lines L and E in Fig.
6-1-121 ) which are softer and
more resilient than those supplied with test stand.
Check 2 - Filter Can
Cause
Original filter has been replaced with one which is larger
or has a softer can, such as Cummins throwaway filter.
Check 3 - Aerated Fuel
Cause
Aerated fuel.
Correction
Install lines of material and length shown in Fig.
6-1-121.
Correction
Replace with standard filter per Fig.
6-1-121.
Note: Be sure that filter is installed in correct location in
the circuit.
Correction
See Causes and Corrections under Check 13 of "Test
Stand will not repeat consistently on any given injector.”
490
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