78
Maintenance
While the packer is moving, check on the gauge : it
should read 2700
psi.
Figure 3-51 Test port
If adjustment is required, it is performed simultaneously as described:
N
OTE
:
Two people are needed to make this adjustment correctly.
3.
ENSURE the pump is disengaged and the engine is OFF.
4.
REMOVE the cap from the main relief on the packer valve (see Figure 3-52).
Figure 3-52 Packer relief valve
5.
LOOSEN the locknut of the relief valve and with an Allen key TURN the adjustment screw
clockwise until it stops.
6.
REDUCE packer pump pressure to minimum using the main relief valve (see Figure 3-53). To
do so:
6 a.
REMOVE the cap from the relief valve, LOOSEN the locknut and TURN the adjustment
screw OUT to decrease pressure.
6 b.
Once completed, TIGHTEN BACK the locknut.
7.
START the truck and ENGAGE the pump.
8.
While a helper is operating the packer (cylinder bottoming out in both directions), ADJUST the
main relief valve on the packer hydraulic pump (see Figure 3-53). To do so:
8 a.
LOOSEN the locknut.
8 b.
TURN the adjustment screw IN to RAISE PRESSURE.
The pressure should be set at 3000
psi.
8 c.
Once completed, TIGHTEN BACK the locknut and PUT BACK the cap.
Summary of Contents for ALLEY -GATOR RIGHT-HAND
Page 1: ...ALLEY GATOR RIGHT HANDTM MAINTENANCE MANUAL...
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Page 10: ...viii Table of Contents...
Page 16: ...6 Introduction...
Page 38: ...28 Safety...
Page 104: ...94 Maintenance Figure 3 69 Packer choke valve w cap w o cap Adjustment screw Valve with cap...
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