JLG X20JP - X600AJ Service Manual - Manual (Page 125)

SECTION 3 - CHASSIS & TURNTABLE
3121623 – JLG Lift – 3-101
NOTE: The fuel transfer pump can be oriented in two positions.
Before removing the fuel transfer pump from the cylinder
block, note the orientation of flange (5) on fuel transfer
pump (1) for assembly.
2. Loosen the hose clamps and disconnect the hoses
(not shown) from fuel transfer pump (1).
3. Evenly loosen bolts (4) and remove fuel transfer
pump (1) from the cylinder block.
NOTE: In order to remove the fuel transfer pump, it may be nec-
essary to rotate the crankshaft until the operating plunger
of the fuel transfer pump is not under pressure.
4. Remove O-ring seal (3) from fuel transfer pump (1).
INSTALLATION PROCEDURE
KEEP ALL PARTS CLEAN FROM CONTAMINANTS. CONTAMI-
NANTS MAY CAUSE RAPID WEAR AND SHORTENED COMPONENT
LIFE.
1. Clean the mating surfaces of the cylinder block and
flange (5) on the fuel transfer pump.
NOTE: Ensure that the camshaft lobe for the fuel transfer pump is
at minimum lift before the fuel transfer pump is installed.
The fuel transfer pump can be oriented in two positions.
Ensure that the fuel transfer pump is oriented in the cor-
rect position.
2. Install a new O-ring seal (3) to fuel transfer pump (1).
3. Lubricate the operating plunger of fuel transfer
pump (1) with clean engine oil.
4. Position fuel transfer pump (1) on the cylinder block.
Ensure that the operating plunger is positioned cor-
rectly on the camshaft lobe. Install bolts (4). Tighten
the bolts to a torque of 6 N·m (53 lb in).
5. Connect the hoses (not shown) to fuel transfer
pump (1). Tighten the hose clamps.
NOTE: The inlet for the fuel transfer pump can be rotated 360
degrees by loosening bolt (2). The fuel inlet is adjustable
in 15 degree increments. If adjustment is made to the posi-
tion of the fuel inlet, tighten bolt (2) to a torque of 2.5 N·m
(22 lb in).
6. Turn the fuel supply to the ON position.
7. Prime the fuel system. Refer to Systems Operation,
Testing and Adjusting, “Fuel System - Prime” for
additional information.
FUEL INJECTION LINES - REMOVE AND
INSTALL
REMOVAL PROCEDURE
KEEP ALL PARTS CLEAN FROM CONTAMINANTS. CONTAMI-
NANTS MAY CAUSE RAPID WEAR AND SHORTENED COMPONENT
LIFE.
CARE MUST BE TAKEN TO ENSURE THAT FLUIDS ARE CON-
TAINED DURING PERFORMANCE OF INSPECTION, MAINTE-
NANCE, TESTING, ADJUSTING AND REPAIR OF THE PRODUCT.
BE PREPARED TO COLLECT THE FLUID WITH SUITABLE CON-
TAINERS BEFORE OPENING ANY COMPARTMENT OR DISASSEM-
BLING ANY COMPONENT CONTAINING FLUIDS. DISPOSE OF ALL
FLUIDS ACCORDING TO LOCAL REGULATIONS AND MANDATES.
DO NOT LET THE TOPS OF FUEL INJECTORS TURN WHEN THE
FUEL LINE NUTS ARE LOOSENED OR TIGHTENED. THE FUEL
INJECTORS WILL BE DAMAGED IF THE TOP OF THE INJECTOR
TURNS IN THE BODY. THE ENGINE WILL BE DAMAGED IF A
DEFECTIVE FUEL INJECTOR IS USED BECAUSE THE SHAPE OF
FUEL (SPRAY PATTERN) THAT COMES OUT OF THE NOZZLE
WILL NOT BE CORRECT.