JLG G6-42A Service Manual - Manual (Page 135)

8-7 G6-42A, G9-43A, G10-43A
Hydraulic System
8.4.2 Pressure Specifications—G6-42A
Hydraulic
Circuit
Test
Port Procedure Adjustment
Location
Pressure
Range
Nominal
Pressure
Pressure
Reducing
Cartridge
JS (A)
• Connect gauge to BV port
• Run engine at high idle
• Lock steering
1 (PR)
440–460 psi
(30,3–31,7 Bar)
450 psi
Relief
Valve
Cartridge
CF1 (B)
• Connect gauge to CF1 port
• Run engine at high idle
• Lock steering
2 (RV1)
2550–2650 psi
(176–183 Bar)
2600 psi
Main
Relief
Valve
EF1 (C)
• Connect gauge to EF1 port
• Run engine at high idle
• Stall boom retract
3
3900–4100 psi
(269–283 Bar)
4000 psi
Boom
Extend
EF1 (C)
• Connect gauge to EF1 port
• Run engine at high idle
• Stall boom extend
N/A
3650–3950 psi
(252–272 Bar)
3800 psi
Tilt EF1 (C)
• Connect gauge to EF1 port
• Run engine at high idle
• Stall tilt up
N/A
3900–4100 psi
(269–283 Bar)
4000 psi
Boom Lift EF1 (C)
• Connect gauge to EF1 port
• Run engine at high idle
• Stall boom retract
N/A
3900–4100 psi
(269–283 Bar)
4000 psi
Auxiliary EF1 (C)
• Connect gauge to EF1 port
• Run engine at high idle
• Stall auxiliary on direction
• Check
• Stall auxiliary opposite direction
• Repeat check
N/A
2850–3150 psi
(197–217 Bar)
3000 psi
MY7840
3
MY7830
1
A
2
B
C