JLG G6-42A Service Manual - Manual (Page 136)

Hydraulic System
8-8 G6-42A, G9-43A, G10-43A
8.4.3 Pressure Specifications—G9-43A &
G10-43A
Hydraulic
Circuit
Test
Port
Function Used to Test
Adjustment
Location
Pressure Range
Nominal
Pressure
Load Sense
Relief
GLS(B)
• Connect gauge to P1 port and
adjust standby pressure setting
to 250 psi (see procedure in
sfa, step 2)
• Adjust main compensator to 3950
psi (see procedure in sfa, step 3)
• Adjustment may require
incrementally increasing load
sense relief valve (adjustment
location 6) and main pump
compensator until a setting of
3950 psi can be observed on
p1 gauge
• Adjust load sense relief valve to
setting shown at right using
gauge in GLS (B) port
• Once load sense relief is
adjusted to specification, main
pump pressure may read lower
than 3950 psi.
1
3550–3650 psi
(245–252 Bar)
3600 psi
Stand By P1 (A)
• Connect gauge to P1 port
• Run engine at high idle
• No Function
2
250–265 psi
(17,2–18,2 Bar)
250 psi
Main P1(A)
• Connect gauge to P1 port
• Run engine at high idle
• Stall lift up or frame level
3
3825–3875 psi
(264–267 Bar)
3850 psi
Pilot JS1 (C)
• Connect gauge to JS1 port
• Run engine at high idle
• Stall steering
4
500–550 psi
(34,5–37,9Bar)
500 psi
Service
Brake
BV1 (D)
• Connect gauge to BV1 port
• Run engine at high idle
• Stall steering
5
1050–1150 psi
(72,3–79,2 Bar)
1100 psi
Priority
Load Sense
(Steering)
GLS (B)
• Connect gauge to GLS port
• Run engine at high idle
• Stall steering
6
2350–2450 psi
(162–169 Bar)
2400 psi
Boom
Extend
GLS(B)
• Connect gauge to GLS port
• Run engine at high idle
• Stall boom extend
N/A
3600–3700 psi
(248–255 Bar)
3650 psi
Boom
Retract
GLS(B)
• Connect gauge to GLS port
• Run engine at high idle
• Stall boom retract
N/A
3600–3700 psi
(248–255 Bar)
3650 psi