JLG 4017PS Service Manual - Manual (Page 137)

8-5 3706PS, 3707PS, 4014PS, 4017PS, 33.7, 37.6, 37.7
Hydraulic System
e. Pressure Specifications
Note: All pressure check are to be performed at High Idle unless noted.
Hydraulic
Circuit
Test Port Procedure Adjustment
Location
Pressure Range
1 Steer Pressure LS1 (A)
Connect gauge to LS1 port, select 2
wheel steer, run engine at high idle,
turn steering wheel one direction to
lock. Hold and check pressure.
Note: Do not operate any other
function while checking pressure.
N/A
168-178 Bar
(2467-2582 PSI)
2 Pump Margin
LS1 (A)&
P (B)
Connect one gauge to LS1 port, and
connect one gauge to LS1 port, select
2 wheel steer, run engine at high idle,
turn steering wheel one direction to
lock. Hold and check pressure.
The margin pressure is the difference
between the pressures measured at
the LS1 Port and the P Port.
1
18,5-23,5 Bar
(269-340.8 PSI)
3 Load Sense LS1 (A)
Connect gauge to LS1 port, level
boom and bottom boom retract.
2
225-235 Bar (3263-
3408 PSI)
4
Maximum
Pump Pressure
P (B)
Connect gauge to P port, level boom
and bottom boom retract.
3
245-255 Bar (3553-
3698 PSI)
5
Stand-By
Pressure
P (B)
Connect gauge to P port, check
pressure at Low idle with no function.
N/A
15-35 Bar
(218- 508 PSI)
6 Pilot Pressure PR (C)
Connect gauge to PR port, check
pressure with level boom and bottom
boom retract.
N/A
25-30 Bar
(362-435 PSI)
7
Auxiliary
Pressure
Auxiliary
Port
Connect gauge to Auxiliary Coupling,
check pressure at coupling.
N/A
215 Bar or Higher
(3118 PSI or Higher)
MZ6400 MZ6410
1
C
3
A
B
2