October 2020
Part No. 1268553GT
Z®-51/
31J
33
Service and Repair Manual
Primary Boom Components
14 Attach a 5 ton / 5,000 kg overhead crane to the
center point of the primary boom.
15 Attach a similar lifting device to the primary
boom lift cylinder.
16 Place support blocks under the primary boom
lift cylinder
17 Remove the pin retaining fasteners from the
primary boom lift cylinder rod-end pivot pin.
Use a soft metal drift to remove the pin.
WARNING
Crushing hazard. The boom lift
cylinder and primary boom will
fall if not properly supported.
18 Lower the rod end of the primary boom lift
cylinder onto support blocks. Protect the
cylinder rod from damage.
19 Remove the pin retaining fasteners from the
primary boom pivot pin.
20 Remove the primary boom pivot pin with a soft
metal drift, then carefully remove the primary
boom from the machine and place it on a
structure capable of supporting it.
WARNING
Crushing hazard. The
primary boom could become
unbalanced and fall when
removed from the machine if
not properly attached to the
overhead crane.
How to Disassemble the Primary
Boom
Complete disassembly of the boom is only
necessary if the outer or inner boom tube must be
replaced. The extension cylinder can be removed
without completely disassembling the boom. Refer
to Repair Procedure,
How to Remove the Primary
Boom Extension Cylinder
.
1 Remove the primary boom. Refer to Repair
Procedure,
How to Remove the Primary Boom.
2 Place blocks under the barrel end of the
primary boom extension cylinder for support.
3 Remove the pin retaining fastener from the
extension cylinder barrel-end pivot pin at the
pivot end of the primary boom. Use a soft metal
drift to remove the pin.
4 Remove and label the location of the wear pads
from the platform end of the primary boom.
Note: Pay careful attention to the location and amount
of shims used with each wear pad.
5 Support and slide the extension tube and
extension cylinder assembly out of the boom
tube.
WARNING
Crushing hazard. The primary
boom extension tube could
become unbalanced and fall
when removed from the primary
boom tube if not properly
supported.
Note: During removal, the overhead crane strap will
need to be carefully adjusted for proper balancing.
Summary of Contents for Z-51/30J
Page 62: ...52 Z 51 31J Part No 1268553GT October 2020 Service and Repair Manual Manifolds...
Page 64: ...54 Z 51 31J Part No 1268553GT October 2020 Service and Repair Manual Manifolds...
Page 71: ...October 2020 Part No 1268553GT Z 51 31J 61 Service and Repair Manual Manifolds...
Page 99: ...October 2020 Part No 1268553GT Z 51 31J 89 Service and Repair Manual Hydraulic Symbols Legends...
Page 106: ...October 2020 Service and Repair Manual 96 Platform Control Box Wiring Diagram Options...
Page 110: ...October 2020 Service and Repair Manual Electrical Schematic Options 100...
Page 111: ...October 2020 Service and Repair Manual 101 Electrical Schematic AS...
Page 112: ...102 Z 51 31J Part No 1268553GT October 2020 Service and Repair Manual Electrical Schematic AS...
Page 113: ...October 2020 Service and Repair Manual Electrical Schematic AS 103 Z 51 31J Part No 1268553GT...
Page 114: ...October 2020 Service and Repair Manual Electrical Schematic AS 104...
Page 115: ...October 2020 Service and Repair Manual Ground Control Box Terminal Strip Wiring Diagram AS 105...
Page 118: ...October 2020 Service and Repair Manual 108 Ground Control Box Switch Panel Wiring Diagram AS...
Page 119: ...October 2020 Service and Repair Manual 109 Platform Control Box Wiring Diagram AS...
Page 122: ...October 2020 Service and Repair Manual 112 Platform Control Box Switch Panel Wiring Diagram AS...
Page 123: ...October 2020 Service and Repair Manual 113 Electrical Schematic CE...
Page 124: ...October 2020 Service and Repair Manual Electrical Schematic CE 114 Z 51 31J Part No 1268553GT...
Page 125: ...October 2020 Service and Repair Manual Electrical Schematic CE 115 Z 51 31J Part No 1268553GT...
Page 126: ...October 2020 Service and Repair Manual 116 Electrical Schematic CE...
Page 127: ...October 2020 Service and Repair Manual 117 Ground Control Box Terminal Strip Wiring Diagram CE...
Page 130: ...October 2020 Service and Repair Manual 120 Ground Control Box Switch Panel Wiring Diagram CE...
Page 131: ...October 2020 Service and Repair Manual 121 Platform Control Box Wiring Diagram CE...
Page 134: ...October 2020 Service and Repair Manual 124 Platform Control Box Switch Panel Wiring Diagram CE...
Page 135: ...October 2020 Service and Repair Manual 125 Electrical Schematic Deutz TD 2 2 L3 Models CE...
Page 142: ...132 Hydraulic Schematic October 2020 Service and Repair Manual...
Page 143: ...Hydraulic Schematic October 2020 Service and Repair Manual 133 Z 51 31J Part No 1268553GT...