100
Maintenance
For adjustment procedure, refer to “Adjusting the Arms Up Deceleration Valve” on page 107.
Pack Circuit Dump Valve
The pilot-operated check valve (dump valve [see Figure 3-40]) is fitted into the pack hydraulic
circuit for the purpose of speeding up the return stroke of the packer blade.
Figure 3-40 Dump valve
Pressure in the pilot line during the return stroke opens the dump valve and allows approximately
50 percent of the oil exiting the cylinders to go directly to the hydraulic tank. The dump valve is non-
adjustable.
N
OTE
:
Symptoms of pack circuit dump valve failure include poor payloads, slow cycle times, and low
pressure readings during the pack cycle.
Location: The pack circuit dump valve is fitted on to the front header behind the passenger side of the
cab.
Pressure Switch
The pressure switch (see Figure 3-41) ensures the packer blade returns to the ‘home’ position during
an Auto-Pack cycle, when the body is nearing capacity and the blade is therefore unable to complete a
full sweep.
Figure 3-41 Pressure Switch
N
OTE
:
Symptoms of pressure switch failure include poor payloads, premature return of packer blade
during Auto-Pack, and failure of blade to return during Auto-Pack.
Содержание Pendpac WITTKE RETRO FL
Страница 1: ...WITTKE RETRO FLTM MAINTENANCE MANUAL...
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Страница 3: ...WITTKE RETRO FLTM MAINTENANCE MANUAL...
Страница 5: ......
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Страница 10: ...viii Table of Contents...
Страница 14: ...4 Introduction...
Страница 20: ...10 Safety Keep Hands and Body Clear...
Страница 21: ...Safety 11 Stand Clear of Tailgate Extreme Crush Hazard Service Hoist Handle...
Страница 22: ...12 Safety Do Not Climb on Canopy Check All Bridge Clearances...
Страница 23: ...Safety 13 Do Not Drive When Overheight Warning Lamp is Illuminated Tailgate Locks Must Be In Place...
Страница 24: ...14 Safety Crush Hazard Body May Fall The Top of This Vehicle is High Enough...
Страница 25: ...Safety 15 Danger of Electrocution Damage to Vehicle Frame is Heat Treated...
Страница 26: ...16 Safety Disconnect All Batteries and Electronic Control Modules Remove Cap Slowly...
Страница 27: ...Safety 17 Extension Ladder Must Be Secured Lubrication Points...
Страница 28: ...18 Safety Service Hoist Instructions Air Tank Drain Notice...
Страница 29: ...Safety 19 Setting the Tailgate Props Curb Side...
Страница 30: ...20 Safety Setting the Tailgate Props Street Side...
Страница 53: ...Safety 43 5 Lift the body Figure 2 9 Proper lift setup...
Страница 54: ...44 Safety...
Страница 102: ...92 Maintenance Residential Front Loader...
Страница 103: ...Maintenance 93 Tip to Dump...
Страница 126: ...116 Maintenance Hydraulic System Schematics Commercial Front Loader...
Страница 127: ...Maintenance 117...
Страница 128: ...118 Maintenance...
Страница 129: ...Maintenance 119...