Hydraulic System
97
Detecting Cylinder Internal Leaks
An internal leak is caused by a damaged seal inside the hydraulic cylinder (see 1 in Figure 5-25).
Because the cylinder is leaking oil inside (bypassing), a certain amount of pressure is lost, reducing
the efficiency of the cylinder and its capacity to push and/or pull.
If the packer cylinders are bypassing, the seal inside the cylinder may need to be replaced.
To detect internal leaks in packer cylinders:
1.
Apply all safety measures, and set the parking brake.
2.
Pull on the red emergency S
TOP
button.
3.
Start the engine and engage the hydraulic pump.
4.
Fully extend the packer cylinders and disengage the hydraulic pump.
5.
Disconnect the packer extend proximity switch. This prevents the packer from returning to its
initial position.
6.
Disconnect hose “A” and install a plug at the end of it.
7.
Engage the hydraulic pump.
8.
Push the green button and see if oil is leaking from port “A”, then push the emergency S
TOP
button.
If oil leaks out of port “A” when pressure is applied, there might be an internal leak; replace or
repair the cylinder.
Содержание MINIMAX
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Страница 3: ...MINIMAX MAINTENANCE MANUAL...
Страница 8: ...vi Table of Contents Adjusting Arm Speed 164...
Страница 30: ...22 Safety Figure 2 17 Drain valve on air tank...
Страница 72: ...64 Lubrication Figure 4 10 Lubrication chart Helping Hand arm...
Страница 80: ...72 Lubrication...
Страница 90: ...82 Hydraulic System Figure 5 8 Oil temp level gauge Figure 5 9 Steel hydraulic tank...
Страница 101: ...Hydraulic System 93 Figure 5 20 Hydraulic tank Access panel Return filter Strainer Suction line...
Страница 102: ...94 Hydraulic System Figure 5 21 Strainer assembly Strainer...
Страница 106: ...98 Hydraulic System Figure 5 25 Detecting cylinder internal leaks 1 2 3 4 5 A A A...
Страница 108: ...100 Hydraulic System...
Страница 113: ...Electrical System 105 Electrical Schematics Cab Adaptation...
Страница 114: ...106 Electrical System Cab Console Controls...
Страница 115: ...Electrical System 107 Cab Controller...
Страница 116: ...108 Electrical System Chassis...
Страница 117: ...Electrical System 109 Body Module rear side...
Страница 118: ...110 Electrical System Body Module front side...
Страница 119: ...Electrical System 111 Tailgate Lighting...
Страница 120: ...112 Electrical System Panic Bars Crusher Panel Tipper Interlocks...
Страница 121: ...Electrical System 113 Cameras Switchpack Details Interlocks AUTO 10 SEC INHIBIT AUTO N AUTO ON...
Страница 122: ...114 Electrical System...
Страница 127: ...Troubleshooting 119 Figure 8 4 Ball end hex wrench metric and SAE...
Страница 134: ...126 Troubleshooting Figure 8 6 Tailgate locking mechanism...
Страница 156: ...148 Multiplexing...
Страница 162: ...154 Multiplexing...
Страница 164: ...156 Lifting Arm Figure 10 1 Mounting bolts Figure 10 2 Helping Hand gripper Figure 10 3 Hoses...