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4.8 LIFT CYLINDER
The trailer is designed with a 4, 5, or 6 stage single acting hydraulic cylinder that raises the front of the box for unloading.
Release the end gate latches before starting to raise the box. Review and follow the unloading instructions before starting.
The tractor must be equipped with a hydraulic pump to supply oil to the cylinder. A spin-on wing nut connector secures the line to the oil supply.
If equipped with a Mailhot or Custom hoist cylinder, a self-bleeding valve at the top of the cylinder purges the system of air during operation. A HYVA cylinder will self-bleed internally.
Wing Nut Coupler
Tandem (Quarter Frame)
Self-bleeding Valve
Fig. 14 LIFT CYLINDER
Triaxle (Pony Pup)
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Table of contents
- 13 1 Introduction
- 14 Safety
- 15 General Safety
- 16 Operating Safety
- 16 Maintenance Safety
- 17 Unloading Safety
- 17 Travel Safety
- 18 Loading Safety
- 18 Tire Safety
- 18 Safety Signs/Decals
- 19 Sign-Off Form
- 20 Safety Sign (Decal) Locations
- 24 Operation Guidelines
- 24 To the New Operator or Owner
- 25 Terminology
- 26 Break-In
- 28 Controls
- 32 Pre-Operation Vehicle Inspection Procedure
- 35 Hooking Up/Unhooking
- 35 Hooking Up
- 37 Unhooking
- 38 End Gate
- 39 Lift Cylinder
- 40 Air System
- 40 Gate Latch Control System
- 41 Tanks
- 42 Loading/Unloading
- 47 Transporting
- 47 Operating Instructions
- 48 Braking Guidelines
- 49 Tires
- 50 Optional Equipment
- 51 Service and Maintenance
- 51 5.1 Service
- 51 Fluids and Lubricants
- 51 Greasing
- 53 Servicing Intervals
- 65 Service Record Summary (Lubrication)
- 66 Periodic Maintenance and Adjustments
- 66 Torque Specification Summary
- 68 Kingpin and Anchor Frame
- 69 Axle Alignment
- 71 Wheel Hubs/Bearings
- 75 Wheels
- 77 Tires
- 79 Brakes
- 82 Slack Adjusters
- 82 Automatic Slack Adjuster
- 83 Automatic Slack Adjuster Maintenance
- 89 Air Chamber/Spring Brake
- 90 Trailer ABS
- 91 Suspension System
- 91 Air Ride Suspension
- 95 Spring Ride Suspension
- 97 Air System
- 97 Air System Inspection
- 97 Air System Functional
- 98 Electrical System
- 99 Trouble Shooting
- 107 Bolt Torque