Lull 944E-42 Service Manual User Manual download pdf (Page 317)

Model 644E-42/944E-42 Rev. 6/04

Hydraulic System

When checking pressures in

circuits, refer to Section 8.7,

“Hydraulic System Testing,” for

correct pressure readings.

Replace capsules or o-ring

Check the pilot pressure at

“PPG” port of accumulator

charge/secondary function

Check capsules or seals in

joystick valve body.

If the joystick is not

functioning.

Replace Joystick

Adjust the pressure reducing

cartridge on the accumulator

charge/secondary function

Install new seal kit in the

pressure reducing cartridge

on the accumulator charge/

secondary function valve.

Replace the pressure

reducing cartridge on the

accumulator charge/

secondary function valve.

Before troubleshooting any

hydraulic circuit, ALWAYS

begin by checking the

1. Hydraulic oil level in the

2. All hoses, tubes, fittings

for leaks, kinks,

interference, etc.

3. Air in the lines

Lull 944E-42 Service Manual User Manual Page 317