Unified Air Tractor Preventative Owner's manual

Brand
Unified
Model
Air Tractor Preventative
Type
Owner's manual
Air Tractor Preventative
Maintenance Manual
And Troubleshooting
1.0 Overview
This maintenance schedule will assist in the maintenance and troubleshooting procedures for
the Unified Industries Air Tractor. The first portion of this section details the general maintenance
that must be performed to keep the Air Tractor in good running order and in a safe condition for the
operator. The second portion describes troubleshooting to be used to help diagnose tool malfunction.
When the Air Tractor has been set up and operating properly, a record of its performance
should be documented and saved. Comparison of the initial records on a weekly or monthly basis
with current records of the systems performance will reveal changes in the efficiency of operation of
the unit and possible impending problems. To ensure safe and proper operation and prolong the use-
fulness of the unit; the following daily, weekly and monthly preventive maintenance schedules have
been established. Adherence to this schedule is necessary to ensure proper long term performance.
1033 Sutton, Howell, MI 48843
Voice: 517.546.3220
Fax: 517.546.0696
WWW.UNIFIED-IND.COM
Air Tractor Preventative
Maintenance Manual
And Troubleshooting
2.0 General Care
1. The tractor should be kept clean and clear of contaminates such as oil, grease, metal
shavings, etc.
2. Air and electric lines must be kept clear of adjacent tooling, dunnage, and product.
Warning:Donotuseforcedorcompressedairtoremovedebrisfromaroundsealsandbearing
3.0 Scheduled Maintenance
Daily
 Inspect the unit visually to ensure it is in good working order.
 Inspect trolley rail to verify it is free of any debris.
 Verify that air connections are secure and not leaking.
 Manually operate the tractor for ease of use.
1033 Sutton, Howell, MI 48843
Voice: 517.546.3220
Fax: 517.546.0696
WWW.UNIFIED-IND.COM
Proper Tractor Operation: Tractor must come to a complete stop before it can be engaged in
the opposite direction. If this process is not followed, damage to the Tractor will occur and the
warranty will be void.
Air Tractor Preventative
Maintenance Manual
And Troubleshooting
Air Tractor Side View
3.0 Scheduled Maintenance (cont.)
Weekly
 Verify that the air pressure setting is correct based upon the setting designated on the regulator
information tag.
 Visually inspect frame for cracks, breaks, or visible wear.
 Check air lines for loose, pinched, and/or broken connections.
 Inspect trolley and drive wheels for wear or damage.
Air Cylinder
Rod Eye
1033 Sutton, Howell, MI 48843
Voice: 517.546.3220
Fax: 517.546.0696
WWW.UNIFIED-IND.COM
Air Tractor Preventative
Maintenance Manual
And Troubleshooting
3.0 Scheduled Maintenance (cont.)
Monthly

Verify that the air shut off valve is in good working condition and will disconnect air
to the tractor.

Replace filter cartridge.

Check all safety cables.

Replace any missing or damaged guards.

Inspect cylinders for rust nicks or dirt. Replace as necessary.

Inspect to insure all fasteners are securely tightened.

Verify that all safety wire is tight and secure.

Inspect rod eye for excessive wear and damage.
1033 Sutton, Howell, MI 48843
Voice: 517.546.3220
Fax: 517.546.0696
WWW.UNIFIED-IND.COM
Air Tractor Preventative
Maintenance Manual
And Troubleshooting
1033 Sutton, Howell, MI 48843
Voice: 517.546.3220
Fax: 517.546.0696
WWW.UNIFIED-IND.COM
Figure 1.
Blue OR valve
Tractor Wheel valve
Tractor Motor Valves
5/32” Air Supply to pendant
5/32” Lines From Pendant
controls
1033 Sutton, Howell, MI 48843
Voice: 517.546.3220
Fax: 517.546.0696
WWW.UNIFIED-IND.COM
Figure 2. Air Tractor Schematic
Figure 3. 2 - Button Pendant Control
Remove and Discard these O-Rings
when valve is used to send pilot signal
Note: If O-Rings are not removed depressing and releasing the lever will trap air in pilot line.
Apply Labels of choice here
Air Supply (IN)
OUT
OUT
IN
Pilot Signal (OUT) when lever
is depressed
Air Tractor Preventative
Maintenance Manual
And Troubleshooting
4.0 Trouble shooting
Warning: For Troubleshooting make sure Air Tractor is in a safe work area
Air Tractor Not Functioning
 Check that unit has proper air supply.
 Check all fittings and lines for leaks.
 Check for clogging.

Check for defective regulator.
If above checks pass
 Check drive wheel for obstructions or damage.
 Verify that air motor is functioning properly by connecting air directly to motor inlet.
 If motor doesn’t work, REPLACE MOTOR.
1033 Sutton, Howell, MI 48843
Voice: 517.546.3220
Fax: 517.546.0696
WWW.UNIFIED-IND.COM
1033 Sutton, Howell, MI 48843
Voice: 517.546.3220
Fax: 517.546.0696
WWW.UNIFIED-IND.COM
4.0 Trouble shooting (continued)
Warning: For Troubleshooting make sure Air Tractor is in a safe work area
Air Tractor only works in one direction
 Check that unit has proper air supply.
 Check all fittings and lines for leaks.
 Check for clogging.

Check for defective regulator.

Make sure flow controls are open, try again.
If above checks pass
1. Disconnect lines 105 and 106 (see Figure 2) from either the motor or control valve.
2. Operate pendant control. Check to see which line is not getting air.
3. Reconnect the line that is working.
4. If line 105 is not working, check to make sure the pilot of the valve is working.
4a. If the pilot line 103 has air coming out when pendant control is operated and the valve is not shift-
ing, replace valve.
4b. If no air is coming out of line 103, check to make sure there is no crimped line going to or from
pendant control. Check pendant Control (Figure 3).
5. If line 106 is not working, check to make sure the pilot of the valve is working
5a. If the pilot line 102 has air coming out when pendant control is operated and the valve is not shift-
ing, replace valve.
5b. If no air is coming out of line 102, check to make sure there is no crimped line going to or from
pendant control. Check pendant Control.
Checking Pendant Control (Figure 3)
1. Remove lines 102 and 103 from Pendant. Operate the pendant control, air should come out of the
corresponding ports when the pendant control is operated.
2. If no air is coming out of the ports, remove line 1 from the pendant control.
3a. If no air is coming out of line 1, check for crimps.
3b. If air is coming out of line 1, pendant control is not operating. Check for clogs or malfunction.
1033 Sutton, Howell, MI 48843
Voice: 517.546.3220
Fax: 517.546.0696
WWW.UNIFIED-IND.COM
4.0 Trouble shooting (continued)
Warning: Plant air will come out with force, make sure line is secure.
Wheel not engaging to rail
 Check that unit has proper air supply.
 Check lines 107 and 108 for leaks (see Figure 1)
 Check for clogging or crimps.
 Make sure flow controls are open, try again.
If checks pass
1. Disconnect lines 102 and 103 (see Figure 2) from control valve.
2. Operate pendant control to feel if air is coming out of line 102 and 103 using corresponding control.
A. If air is present,
- Reconnect lines102 and 103 to the corresponding tees of the valve.
- Disconnect the Blue OR valve from the port of the control valve.
- Operate pendant control, check for air coming out of OR valve.
If air is not present, replace OR valve.
If air is present, re-connect OR valve to the port of control valve. Remove lines 107 and
108.
Warning: Plant air will come out of line 107 with force, make sure line is secure.
Operate pendant control, air should come out of line 108.
If air comes out of line 108, replace cylinder
If no air comes out of line 108, replace control valve.
B. If air is not present, check pendant control (Figure 3)
For more questions please contact:
Proper Tractor Operation: Tractor must come to a complete stop before it can be engaged in
the opposite direction. If this process is not followed, damage to the Tractor will occur and the
warranty will be void.
  • Page 1 1
  • Page 2 2
  • Page 3 3
  • Page 4 4
  • Page 5 5
  • Page 6 6
  • Page 7 7
  • Page 8 8
  • Page 9 9
  • Page 10 10

Unified Air Tractor Preventative Owner's manual

Brand
Unified
Model
Air Tractor Preventative
Type
Owner's manual
Download PDF
report

Ask a question and I''ll find the answer in the document

Finding information in a document is now easier with AI

Related papers

Other documents