POST INSTALLATION
Page 5 - 2
VALIDATION OF RELIEF VALVE PRESSURES
Relief valve pressure validation should be performed with the crane in operating configuration, i.e. out-
riggers down and truck set level. Refer to operator’s manual for instruction.
Obtain a dead lift weight for setting the winch relief valve
pressure
. This will be approximately
12,0
00lbs
(
5445
kg) for a
25-92
. The lift cable should be in a single line configuration with an
overhaul ball
attached (alternately, you may cap the winch ports instead of performing a dead lift).
The system reliefs should be checked only when the oil in the hydraulic system is warm or at operating
temperature.
Proper Relief Valve Settings:
Winch Valve: 2
8
00 +/- 50psi (1
9,
200 +/- 350kPa)
Swing Valve: 1500 +/- 50psi (10,300 +/- 350kPa)
Main Valve:
300
0 +/- 50psi (
20,5
00 +/- 350kPa)
SEE NEXT PAGE FOR ADJUSTMENT PROCEDURE
1.
Attach pressure gage to Main Valve Test
Port as shown on the previous page.
2.
With the control levers in neutral position,
raise pump RPM to 2,
3
00.
3.
Slowly retract the boom extension
cylinder until it reaches the end of the
stroke and forces the system pressure
upward to relief pressure.
LEAVE ALL OTHER CONTROL LEVERS
IN THE NEUTRAL POSITION.
4. Check the reading on the test gauge. See
pressure table below for proper settings.
1.
Attach pressure gage to W
inch Valve
Test Port as shown on the previous page.
2.
With control levers in neutral position,
raise pump RPM to 2,
3
00.
3.
With either the winch engaged in a
deadman pull, or the winch-up workport
capped and plugged, move the winch
lever to t
he up direction. Hold the lever
until the system goes over relief.
LEAVE ALL OTHER CONTROL LEVERS
IN THE NEUTRAL POSITION.
4. Check the reading on the test gauge. See
pressure table below for proper settings.
Note: Move the lever to the neutral
position
immediately after taking the
pressure reading
to avoid excessive
heat.
Main Valve Testing Procedure
Winch Valve Testing Procedure
Note: Move the lever to the neutral
position
immediately after taking the
pressure reading
to avoid excessive
heat.
Summary of Contents for LOAD KING 25-92
Page 1: ...INSTALLATION MANUAL LOAD KING 25 92 MARCH 16 2020...
Page 2: ...This page left intentionally blank...
Page 4: ...This page left intentionally blank...
Page 7: ...This page left intentionally blank...
Page 21: ...Pages 2 11...
Page 24: ......
Page 64: ...Load King Operation Manual SECTION 7...
Page 91: ...Load King Operation Manual GREER INSIGHT OPERATION MANUAL...
Page 124: ......
Page 126: ......
Page 133: ...This page left intentionally blank...
Page 135: ...DWG NO B SHEET 2 OF 2 SCALE NONE REV SIZE D 35 TON...
Page 147: ...SIZE 2 REV 1 D 3 A C SCALE 1 1 SHEET 2 OF 2 A B DWG NO 5 C 2 D D 7 8 B 3 8 6 7 5 4 4 6 1 E...
Page 153: ...DWG NO B SHEET 2 OF 4 SCALE 1 2 REV SIZE F...
Page 154: ...DWG NO B SHEET 3 OF 4 SCALE 1 2 REV SIZE F...
Page 155: ...DWG NO B SHEET 4 OF 4 SCALE 1 2 REV SIZE F...
Page 157: ...DWG NO B SHEET 2 OF 4 SCALE 1 2 REV SIZE F...
Page 158: ...DWG NO B SHEET 3 OF 4 SCALE 1 2 REV SIZE F...
Page 159: ...DWG NO B SHEET 4 OF 4 SCALE 1 2 REV SIZE F...
Page 162: ...DWG NO B SHEET 2 OF 3 SCALE REV SIZE A...
Page 163: ...DWG NO B SHEET 3 OF 3 SCALE REV SIZE A...
Page 165: ...C A 1 2 SHEET 2 OF 8 SCALE REV C SIZE DWG NO A B B C D 4 D 2 3 4 3 1 B...
Page 166: ...C A 1 2 SHEET 3 OF 8 SCALE REV C SIZE DWG NO A B B C D 4 D 2 3 4 3 1 B...
Page 167: ...C A 1 2 SHEET 4 OF 8 SCALE REV C SIZE DWG NO A B B C D 4 D 2 3 4 3 1 B...
Page 168: ...C A 1 2 SHEET 5 OF 8 SCALE REV C SIZE DWG NO A B B C D 4 D 2 3 4 3 1 B...
Page 169: ...C A 1 2 SHEET 6 OF 8 SCALE REV C SIZE DWG NO A B B C D 4 D 2 3 4 3 1 B...
Page 170: ...C A 1 2 SHEET 7 OF 8 SCALE REV C SIZE DWG NO A B B C D 4 D 2 3 4 3 1 B...
Page 171: ...C A 1 2 SHEET 8 OF 8 SCALE REV C SIZE DWG NO A B B C D 4 D 2 3 4 3 1 B...
