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 488 of 894

TRUCK SERVICE MANUAL

FUEL SYSTEM

Complaints And Corrections

Charted on the following pages are the complaints,

showing the items to check for correction of the

complaints.

Each check is numbered, and the item

numbers from Fig.

61121 are given for quick location, so

you may go immediately to the tabulated description of

the causes and corrective action as necessary.

Check 1-Vials

Cause

Differential of 1 cc or more between the vials.

Metered fuel partially missing vials.

Foam preventing accurate reading of fuel delivery in

vials.

Correction

Remove the vials and check the relative accuracy by

filling one to various levels and pouring into the other vial.

If there is significant variation between the two vials,

mark the vials (spot of paint on one) and record the

relative variation for future reference in troubleshooting.

If the differential is significant at 132 cc, choose one vial

(the one marked with a spot of paint above) for machine

calibration use and when trouble-shooting the machine.

Replace with correctly calibrated vials as soon as

possible.

Adjust solenoid outlet line so that 100% of the metered

fuel enters the vials.

(For minimum fuel foam, direct

stream of fuel against side of vial.)

Foam will settle in approximately one minute.

To prevent

this time loss a 1" diameter hole may be cut in the top

panel (with panel removed) and the foam may be stirred

with a wire or rod.

483