Altec DL Series Instructions Manual

Derrick controls, adjustment procedure

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Introduction

Tools

Sections of

Procedure

Section 1

Testing

This instruction explains the procedure to adjust and calibrate the controls on the

DL/DM, DLB/DMB, D2000A, D3000A, D4000A, D2000B, D3000B, D4000B, and DT80

Series derricks. The procedure requires the following items in addition to normal

mechanics tools:

• Quick disconnect installed in the return line of the control valve

(Altec kit p/n 970457959, if required)

• Electronic Low pressure gauge (0-600 psi or 0-1000 psi range)

• CADI

• Infrared (IR) thermometer

There are three sections to the procedure: Section 1: Differential Pilot Pressure Testing

and Adjustment Procedure, Section 2: Threshold Calibration Procedure, and Section

3:Max Out and Low Speed Calibration. Read and understand all steps of the instruc-

tions before beginning the procedure.

1. Position the unit on a level surface. Apply the parking brake and chock the wheels.

Engage the unit's hydraulic system. Properly set the outriggers. Disengage the

hydraulic system and shut off the engine.

Section 1: Differential Pilot Pressure Testing and Adjustment Procedure

2. Remove the turntable cover from the right side of the turntable (as viewed from the

boom tip looking toward the turntable).

3. Attach the pressure gauge to the tank pressure quick disconnect. Depending on

the design of the valve, this quick disconnect will be located either on the large tee

in the return line located to the left of the lower control valve (refer to Figure 1) or on

the small tee in the external pilot drain port located in the upper left corner of the

lower control valve (refer to Figure 2). Turn the gauge on, and zero it if it is not

showing zero.

Return

Line

Figure 1 — Gauge On Return Quick Disconnect

Instructions

Derrick Controls

Adjustment Procedure

1 of 6

749-50092

Gauge

Table of Contents

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Summary of Contents for Altec DL Series

Page 1 Series derricks. The procedure requires the following items in addition to normal mechanics tools: Tools • Quick disconnect installed in the return line of the control valve (Altec kit p/n 970457959, if required) • Electronic Low pressure gauge (0-600 psi or 0-1000 psi range) • CADI • Infrared (IR) thermometer...
Page 2 749-50092 Section 1 Drain Port Testing (Continued) Test Quick Disconnect Figure 2 — Gauge On Pilot Drain Quick Disconnect 4. Start the engine. With the engine running at idle, energize the pilot system as described in Step 4a or 4b. a.
Page 3 749-50092 8. Start the engine. With the engine running at idle, energize the pilot system using the Section 1 same function as in Step 4a or 4b. The pressure gauge should indicate within the range Testing calculated in Step 7. If the pilot pressure is above or below this range, adjust the (Continued) pressure as described in Adjustment at the end of this Section.
Page 4 749-50092 Section 2 a. If the unit is equipped with a digger, unstow the digger. Make sure the booms are (Continued) fully retracted. With the engine at full RPM, operate Digger Dig at full speed while holding the intermediate boom control fully shifted in the Retract position or holding the pole guide open/close switch in the Close position.
Page 5 749-50092 Section 2 (Continued) Indicating 10-30 Degrees Figure 7 - Boom Angle Indicator 4. Set the low speed/standard switch to Standard on the control panel being used. Operate with the engine at full RPM. 5. Record the MX setting for the function to be calibrated (Boom Up/Down, Rotation CW/ CCW, Intermediate Boom Extend/Retract, Upper Boom Extend/Retract, Winch In/ Out, or Digger Dig/Clean).
Page 6 749-50092 Section 3:Max Out and Low Speed Calibration Section 3 The Max Out (MX) and Low Speed (LMX) settings for the boom, winch, and digger functions must be properly adjusted to achieve the correct valve spool travel and cycle times at full control handle travel. Because the MX and LMX calibration procedures vary for different models, refer to the latest CADI Quick Reference Guide (p/n 749-30200) or the appropriate maintenance manual for the proper procedures.

This manual is also suitable for:

Dm seriesDlb seriesDmb seriesD2000a seriesD4000a seriesD3000a series ... Show all