Quantcast Perform AFC plunger setting. (cont) - TM-9-2815-226-34-20148

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TM 9-2815-226-34-2
CAUTION
THE AFC ADJUSTING TOOL 3375137 MUST BE USED WITH CARE. THE LARGE
MOVEABLE CENTER HEX SOCKET ENGAGES THE NUT THAT RETAINS THE AFC
BELLOWS TO THE PLUNGER. THE SOCKET HEAD KEY MOVES THE PLUNGER IN
AND OUT TO ATTAIN THE PROPER ADJUSTMENT.
IF THE LARGE HEX SOCKET IS NOT PROPERLY ENGAGED, THE AFC BELLOWS
CAN BE DAMAGED.  THE PROPER SEQUENCE OF TOOL USE IS TO FIRST
ENGAGE THE LARGE HEX SOCKET, THEN THE SMALL HEX SOCKET, FOLLOWED
BY HEX HEAD SOCKET KEY.
NOTE
During this adjustment, it may be necessary to adjust the flow control valve to
maintain a flow rate of 300 pph.  This flow rate must be maintained during
adjustment.
(8) Using AFC adjusting tool and hex socket key, adjust fuel pressure reading on test stand fuel pressure gage
to read 69 psi (476.1 kPa).
CAUTION
AFC PLUNGER CAN BE VERY EASILY BROKEN WHEN TIGHTENING JAM NUT.
USE EXTREME CARE WHEN TIGHTENING JAM NUT TO 25-35 IN. LBS (2.83-3.96 N
m) TORQUE.
THE LARGE AND SMALL HEX SOCKETS MUST BE FULLY
RETRACTED  AFTER  LOOSENING  THE  PLUNGER  JAM  NUT  TO  AVOID
INTERFERING WITH THE AFC PISTON TRAVEL.
IF THE AFC PISTON IS
DISTURBED WHILE ADJUSTING THE PLUNGER, REPEAT THE ENTIRE AFC
PLUNGER SETTING PROCEDURE.
(9) Tighten AFC plunger jam nut with adjustment tool after correct fuel pressure is attained.
(10) Recheck for fuel pressure gage indication of 69 psi (476.1 kPa) and flowmeter indication of 300 pph to
ensure accuracy of adjustment.
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