Fig. 6-5: Pilot Pressure Diagnostic Port - JLG Lull 1044C-54 II Series Service Manual

Boom and Transfer
6-8
7. Install boot (Item 17) on stem (Item 14) making sure that the top lip of
the boot rests in the channel in the stem.
8. Roll back boot and install cam (Item 18), retainer (Item 19), and flange
(Item 20) on stem.
9. Install flange on joystick body with two (2) capscrews (Item 16). Install
retainer on flange with remaining two (2) capscrews, ensuring that one
capscrew also secures the wire to the retainer with the clip (Item 15).
Torque capscrews to 28 in-lbs.
10. Make final adjustment of cam and flange as follows:
a. Make sure the cam is backed off enough to ensure that all four (4)
plungers (Item 30) are in the spring-offset position.
b. Apply thread locking compound to flange thread.
c. Screw cam and stem on flange until cam just touches the plungers.
d. Screw cam a maximum of 1/4 turn and then torque back cam
against stem to 160 in-lbs.
11. Return boot to correct position, covering retainer.
PUMP 1

Fig. 6-5: Pilot Pressure Diagnostic Port

12. Test pilot pressure as follows:
a. (Ref. Fig. 6-5) Connect a 600 psi gauge to the pilot pressure test
port located behind the cab step.
b. Start the machine and check pilot pressure. While the engine is
idling, the pilot pressure should read 510 ±25 psi.
CARR. TILT CARR. TILT
PUMP 2 BRAKES STEERING
(BASE END) (ROD END)
PILOT ACCUM.
31200079